Page 1
OWNER’SHANDBOOK
INTEGRATEDHYDRAULICSYSTEM
99kWPROPORTIONALTHRUSTER
MODEL575STABILIZERwithDATUMCONTROL
andSTABILIZATIONAtRest®
AproductofNaiadDynamicsUS,Inc.
ANaiadMaritimeGroup,Inc.Company
USA UnitedKingdom Netherlands France AsiaPacific
Connecticut Southampton Maastricht LaCiotat Perth,Australia
+12039296355 +44(0)2392539750 +31(0)436049200+33(0)486060005 +61(0)451699676
Maryland
+13016902010
Florida
+19547977566
MemberoftheNationalMarineManufacturers
Association,theInternationalSuperyachtSocietyandthe
MarineIndustriesAssociationofSouthFlorida
Preparedfor:DunyaYachtsHullDY009
NaiadMaritimeGroup,Inc.2021
www.naiad.com
sales@naiad.com
service@naiad.com
NaiadSO#35941
Page 2
INTEGRATED HYDRAULIC SYSTEM
TABLE OF CONTENTS
INTRODUCTION
IMPORTANTNOTICE
WARRANTY
DEALERS
SAFETYWARNINGSANDOPERATINGPRECAUTIONS
SectionI: STABILIZERSYSTEM
SectionII: DATUMSTABILIZERROLLCONTROL–OPERATINGINSTRUCTIONS
SectionIII: THRUSTERSYSTEM
SectionIV: INTEGRATEDSYSTEMHYDRAULICS–HYDRAULIC/ELECTRICALSCHEMATICS&HYDRAULIC
COMPONENTDRAWINGS
IMPORTANT:
ALLJOBSPECIFICINFORMATIONSUPERSEDESALLOTHERGENERALINFORMATION
INCLUDINGDRAWINGS,SCHEMATICS&DIAGRAMS
www.naiad.com
sales@naiad.com
service@naiad.com
Page 3
IMPORTANTNOTICE
ThishandbookisintendedtoprovidelimitedandbasicinformationconcerningNAIADDYNAMICS®
(ND®)products.Allquestionsregardingthishandbookandtheapplication,useorserviceofthese
productsshouldbedirectedtoourCustomerServiceorEngineeringdepartments.
NAIAD DYNAMICS is the manufacturer of NAIAD® ship systems and equipment. ND makes no
warranty of any kind with regard to this handbook or its related documents, including but not
limited to implied warranties or fitness for a particular purpose. ND shall not be held liable for
errors or omissions, or
limited to incidental or consequential damages, arising from any use or interpretation of this
handbookoritsrelated documents,including butnotlimitedtotechnicaldiagrams anddrawings.
This handbook is subject to copyright and all data,
exclusivepropertyofND.
Warning: The misapplication, miscalibration, misuse, faulty installation or faulty servicing of
dynamic,powerful and/or technically complexequipmentsuchasND systems and equipmentcan
resultinfire,seriouspersonalinjuryand/orsubstantialpropertydamage.
The procedures, instructions and other information in this handbook and its related documents
have been compiled on the assumptionthat all personnel following this information are suitably
qualifiedandhave received adequate technicaltraining.Such personsare, therefore,deemed to
be competent to act at alltimes with due regard for
other personnel, equipment and of the ship itself, and to employ at all times sound and
appropriateengineeringandshipbuildingpractices.
ObserveallSafetyWarningsandOperatingPrecautionsinthishandbook.
Allprocedures,instructionsandguidelinesprovidedbyNDaresubjecttorevisionandmodification
as required tocomply with all applicable codes and standards.Personnelinstalling, servicing or
handling ND equipment are specifically required to conform with all such codes and standards,
including, but not limited to those established by the
Institute of Electrical and Electronic Engineers (IEEE), and applicable classification society
standards such as American Bureau of Shipping (ABS), Lloyd’s Register (LR), Registro Italiano
Navale(RINA),BureauVeritas(BV)andDetNorskeVeritas‐GermanischerLloyd(DNVGL).
The information containedin this handbook is proprietary and unauthorized use or disclosure to
other persons, in whole or in part, is strictly prohibited without prior written consent of NAIAD
DYNAMICS.
NAIAD®, NAIAD DYNAMICS®, ND®, TotalRide Control®, S@A®, AtRest® and AtSpeed®, as may be
usedwithor without the trademark symbol in this handbook,areeachtheregisteredtrademarks
ofNaiadMaritimeGroup,Inc.VariousUnitedStatesandInternationalpatentsprotectNDsystems
andcomponents.
Naiad Dynamics US Inc., Naiad Dynamics UK Ltd., Naiad Dynamics Holland BV, Naiad Dynamics
FranceSARL andNaiadDynamics AsiaPacificPty. Ltd.aremembersof NaiadMaritimeGroup Inc.
–WorldLeadersinShipMotionControlSolutions®.
EXPORT CONTROL: The technical data contained in this document may only be exported
accordance with the Export AdministrationActand the Export Administration Regulations (EAR).
DiversioncontrarytoU.S.lawisprohibited.
for damages, losses or causes of action of any nature, including but not
diagrams and other content remains the
the safety of themselves, and the safety of
Society of Automotive Engineers (SAE),
in
©NaiadMaritimeGroup,Inc.2021
Page 4
PRODUCT LIMITED WARRANTY
PERSONAL USE (YACHT) CONSUMER
ONE YEAR / TWO YEAR
Naiad Dynamics US, Inc. (ND) warrants to the owner of the personal use yacht in which our new NAIAD system is first
installed that said system is free from defects in material and workmanship when subject to normal use and service, for a
period of ONE YEAR from the date of acceptance of the system during sea acceptance trials (SAT) of the vessel in which the
NAIAD product is first installed, or for TWO YEARS from the date of shipment from ND, whichever expires sooner. ND will,
at its option, repair or replace any NAIAD part(s) manufactured by ND without charge for said part(s) provided that notice
of the defect is given ND within the foregoing periods and, upon examination by ND, said part(s) are determined to be
defective. This limited warranty does not apply to replacement parts used to service or repair existing NAIAD systems—
refer to NAIAD’s specific replacement limited warranty. All parts returned and/or replaced must be shipped Carriage
Insurance Paid (CIP) Shelton, CT, USA. ND will also, if necessary and within the foregoing period, provide, or arrange for
its representatives to provide, authorized warranty labor without charge, less travel and sustenance expenses.
ND specifically excludes from this warranty all work required, and costs incurred, to gain unencumbered access to NAIAD
products. ND further excludes from this warranty, problems resulting from (1) failure to comply with ND's
recommendations, especially pertaining to product application, model size, installation specifications, guidelines, and
technical documentation and including without limitation proper hull reinforcement and electrical bonding of NAIAD
products; or (2) overloading or misapplication or inadequate installation of the NAIAD product as determined by ND,
including modifications or changes in the vessel characteristics or specifications, or use of the vessel beyond the criteria for
which the ND product was sized or intended; or (3) any problems caused by repairs or modifications not performed by ND
or their designated and authorized service facilities; or (4) problems caused by non-ND component parts; or (5) problems
caused by misuse, abuse, neglect, storage, accident, error, impact from slamming or with a physical object of any type, or
negligence in boat handling or maintenance, or failure to comply with ND operating instructions and warnings or marine
and industrial regulatory body rules. ND reserves the right to require reasonable proof of installation data and
maintenance.
EXCEPT AS EXPRESSLY PROVIDED IN THIS WARRANTY OR AS OTHERWISE MANDATED BY LAW, ND DISCLAIMS ANY AND
ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING ANY WARRANTIES OF MERCHANTABILITY OR OF FITNESS FOR
A PARTICULAR PURPOSE AND OF ALL OTHER OBLIGATIONS OR LIABILITIES ON THE PART OF ND. SOME STATES DO NOT
ALLOW THE EXCLUSION OF IMPLIED WARRANTIES, SO THE ABOVE EXCLUSION MAY NOT APPLY TO YOU. ANY IMPLIED
WARRANTY THAT MAY BE DEEMED TO ARISE BY OPERATION OF LAW SHALL BE LIMITED IN DURATION FOR A PERIOD OF
ONE YEAR FROM THE DATE OF ORIGINAL INSTALLATION, OR FOR TWO YEARS FROM THE DATE OF SHIPMENT FROM ND,
WHICHEVER EXPIRES SOONER.
THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS AND YOU MAY ALSO HAVE OTHER RIGHTS, WHICH VARY FROM STATE
TO STATE.
ND’s compliance with these warranty obligations shall fulfill its entire liability with respect to any NAIAD product and shall
constitute the owner's exclusive remedy with respect thereto. IN NO EVENT WILL ND BE LIABLE FOR ANY DAMAGES,
INCLUDING ANY LOST PROFITS OR OTHER INCIDENTAL OR CONSEQUENTIAL DAMAGES, ARISING OUT OF THE USE,
MALFUNCTION, FAILURE, OR INABILITY TO USE ANY ND PRODUCT, INCLUDING DAMAGE TO EQUIPMENTS, CRAFT,
VEHICLE, ITS CONTENTS, OR OCCUPANTS, OR FOR ANY CLAIM BY ANY OTHER PARTY, EVEN IF ND HAD BEEN ADVISED OF
THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE LIMITATION OR EXCLUSION OF LIABILITY FOR
INCIDENTAL OR CONSEQUENTIAL DAMAGES SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY TO YOU.
If you believe you have a defective product, or if you have any questions about the performance of ND’s NAIAD product or
need repairs, assistance or service, you may contact ND at:
Naiad Dynamics US, Inc.
50 Parrott Drive, Shelton, Connecticut, USA 06484
Attention: Customer Service
tel: +1 203-929-6355 email: Service@Naiad.com
7/2019
Page 5
AuthorizedUSADealers
NewEngland
NAIADDYNAMICSUS,INC.
(Connecticut)*
50ParrottDrive
Shelton,CT06484
SandoNicolia
+12039296355
+12039293594
sales@naiad.com
www.naiad.com
EssexBoatWorks
9FerryStreet
Essex,CT06426
TedLahey
+18607678276
+18607671729
ted@essexboatworks.com
essexboatworks.com
LiftCapacity100tons
Pilot’sPointMarina
63Pilot’sPointDrive
Westbrook,CT06498
RivesPotts
+18603997906
+18603997259
ppm@byy.com
www.byy.com
LiftCapacity70ton
Mid‐Atlantic
NAIADDYNAMICSUS,INC.
(Maryland)*
23620ThreeNotchRoad
Suite201
Hollywood,MD20636
ChrisPappas
+13016902010
+13016902187
sales@naiad.com
www.naiaddynamics.com
Dealerslistedinboldtypefaceare“Mobile”andtraveltoinstallorserviceNAIADequipment.SeeSeparateListforInternationalDealers©NaiadMaritimeGroup09‐2020
AnchorBayEastMarina
8500CoveRoad
Dundalk,MD21222
Art&TinaCox
+14102841044
+14102842534
art@anchorbayeastmarina.com
www.anchorbayeastmarina.com
LiftCapacity85tons
AtlanticYachtBasin
2615BasinRoad
Chesapeake,VA23322
JamesTaylor
+17574822141
+17574821682
store@atlanticyachtbasin.com
www.atlanticyachtbasin.com
LiftCapacity250tons
Colonna’sShipyard
2401KimballTerrace
Norfolk,VA23504
VanceHull
+17575452414
+17575432480
vhull@colonnaship.com
www.colonnayachts.com
LiftCapacity800tons
TidewaterYachtService
321EastCromwellSt.
Baltimore,MD21230
BobBrandon
+14106254992
+14105393078
BBrandon@tys.com
www.tysc.com
LiftCapacity77tons
Washburn’sBoatyard
P.O.Box1169
Solomons,MD20688
EricSkow,LukeFrey
+14103266701
+14103264816
service@washburnsboatyard.com
washburnsboatyard.com
LiftCapacity80tons
Florida
NAIADDYNAMICSUS,INC.
(Florida)*
3750HaciendaBlvdSuiteA
Ft.Lauderdale,FL33314
VicKuzmovich
+19547977566
+19547910827
sales@naiad.com
www.naiad.com
StabilizedMarine
4821Southwest59Terrace
Ft.Lauderdale,FL33314
CraigCalkins
+19547977330
+19547975399
stabilizedmarine@comcast.net
www.stabilizedmarine.org
BradfordMarine
3051StateRoad84
Ft.Lauderdale,FL33312
CraigMiser
+19547913800
+19545838759
hydraulics@bradford‐marine.com
www.bradford‐marine.com
LiftCapacity220tons
MarineMax
6810GulfportBlvd.
St.Petersburg,FL33707
RobbieKuhn
+17273436520
+17273810237
Robby.Kuhn@marinemax.com
www.marinemax.com
LiftCapacity80tons
RoscioliYachting
3201SWStateRd84
Ft.Lauderdale,FL33312
TomGlass
+19545819200
+19547910958
ryc@roscioliyachting.com
www.rycshipyard.com
LiftCapacity200tons
RybovichSpencer
4200NorthFlaglerDr.
W.PalmBeach,FL33407
Eva
+15618441800ext.61
+15618408191
service@rybovich.com
www.rybovich.com
LiftCapacity600tons
WhiticarBoatworks
3636SEOldSt.LucieBlvd.
Stuart,FL34996
CalvinPowell
+17722872883
+17722872922
www.whiticar.com
LiftCapacity50tons
Mid‐West
ToledoBeachMarina
11840ToledoBeachRdLaSalle,
MI48145
DavidDisbennett
+17342433800
+17342433823
DDisbennett@
toledobeachmarina.com
toledobeachmarina.com
LiftCapacity60tons
WalstromMarine
501E.BayStreet
HarborSprings,MI49740
DavidPrice
+12315262141
+12315267527
service1@walstrom.com
www.walstrom.com
LiftCapacity70tons
SturgeonBay
MarineCenter
267NauticalDrive
SturgeonBay,WI54235
KenLynch
+19207433311
+19207434298
Kenl@sturgeonbaymarinas.com
www.sturgeonbaymarinas.com
LiftCapacity50tons
GulfofMexico
DogRiverMarina
5004DauphinIslandPkwy.
Mobile,AL36605
BillWhiting
+12514715449
+12514738496
drm@dogrivermarina.com
www.dogrivermarina.com
LiftCapacity75tons
SaundersYachtworks
605WaterwayEastBlvd.
GulfShores,AL36542
JimLangley
+12519813700
+12519813919
service@saundersyacht.com
www.saundersyacht.com
LiftCapacity60tons
M.G.MayerYachtSvc.
406SouthRoadwaySt.
NewOrleans,LA70124
MichaelMayer
+15042821700
+15042820803
kathy@mayeryacht.com
www.mayeryacht.com
LiftCapacity100tons
Northwest
DeltaMarineService,Ltd
2075TryonRoad
Sidney,BCCanadaV8L3X9
BrianCoverly
+1250656‐2639
+12506562619
brian@delta‐marine.com
www.delta‐marine.com
California
FonteneauYachtRepair
1229ShafterStreet
SanDiego,CA92106
LarryJenks
+16192221632
+16192220491
larry@fonteneauyr.com
www.fonteneauyachtrepair.com
*ANAIADMARITIME
GROUP,INC.Company
Page 6
AuthorizedInternationalDealers
Netherlands
NAIADDYNAMICSHOLLAND,BV*
Sleperweg10,6222NKMaastricht
Netherlands
MarcKemmerling
+31(0)436049200
+31(0)433636200
sales@naiad.com
www.naiad.com
Italy
SamosS.R.L.
ViaMoloGiano
16128PortodiGenovaItaly
AlessandroCampini,TomasoLalla
+390102541164
+390102541081
info@samos.it
www.samos.it
France
NAIADDYNAMICSFRANCESARL*
ChantiersNavalsDeLaCiotat
46,QuaiFrançoisMitterand,Bureau1B1
13600LaCiotat,France
MarioAvella
+33(0)486060005
mavella@naiad.com
www.naiad.com
MonacoMarine
46QuaiFrançoisMitterrand
13600LaCiotat,France
+33(0)442361212
+33(0)442835174
commercial@monacomarine.com
www.monacomarine.com
*ANAIADMARITIMEGROUP,INC.Company
Dealerslistedinboldtypefaceare“mobile”andtraveltoinstallorserviceNAIADEquipment.SeeseparatelistforUSADealers©NaiadMaritimeGroup06‐2020
ForCountriesNotListed,ContactNAIADDYNAMICSUS,INC.SalesTeamat[1]2039296355,[1]2039293594,sales@naiad.com
UnitedKingdom
NAIADDYNAMICSUK,LTD*
Unit3NelsonIndustrialPark,ManatonWay
HedgeEnd,Southampton,SO302JH,UK
RossTaylor
+44(0)2392539750
+44(0)2392539764
rtaylor@naiad.com
www.naiad.com
Spain
MarinaBarcelona92
PasseigJoandeBorbo,92
Barcelona
Spain08039
+34932240224
+34932240225
info‐barcelona@mb92.com
www.mb92.com
AstillerosdeMallorcaS.A
Contramuelle‐Mollet,11
07012PalmadeMallorca
Spain
StefanEnders
+34971710645
+34971721368
info@astillerosdemallorca.com
www.astillerosdemallorca.com
Haul‐outonslipwaysupto75m
Greece
InternaftikiA.E.B.E.
6,AlipedouStr.
GR18531Piraeus,Greece
NikolasSkarpidis
PanagiotisAgrapidis
+302104126997
+302104127566
info@internaftiki.gr
www.internaftiki.gr
Australia
NAIADDYNAMICSASIAPACIFIC
PTYLTD*
POBox699
Fremantle,WA6959
Australia
BrendonWesterhout
+610451699676
bwesterhout@naiad.com
www.naiad.com
SeAirLandSystems
10/212CurtinAvenueWest,EagleFarm,
Brisbane,Queensland4009
Australia
GailHunter
+61732687511
+61732681445
sales@seairland.com.au
www.seairland.com.au
OdessaMarine
Suite6,212CurtinAvenueWest,Eagle
Farm,Brisbane,Queensland4009
Australia
HadynGriffith
+610418786384
hadyn@odessamarine.com.au
www.odessamarine.com.au
NewZealand
Lusty&BlundellLtd.
38TawaDrive,Albany;Auckland
NewZealand
PaulBartley
GrantMatthew
+6494158303
+6494158304
paulb@lusty‐blundell.co.nz
grantm@lusty‐blundell.co.nz
www.lusty‐blundel.co.nz
SouthAmerica
NAIADDYNAMICSUS,INC.
(Florida)*
BrowardBusinessPark
3750HaciendaBlvd.SuiteA
Ft.Lauderdale,FL33314
VicKuzmovich
+19547977566
+19547910827
sales@naiad.com
www.naiad.com
Brazil
MCPYachts
RuaHermínioTamiolo,60
Guarujá,SP/Brazil11420‐750
Brazil
ManoelChaves
+55(13)33542356
+55(13)33545522
info@mcpyachts.com
www.mcpyachts.com.br
Taiwan/China
AsiaDieselElectricCorp.
8F‐1,No.34,MinChuan1st.Road,
Kaohsiung,#802,Taiwan,R.O.C.
StephenWu
+886(0)73331191
+886(0)73346808
ade.taiwan@msa.hinet.net
www.asiadiesel.com.tw
Turkey
NevaMarineTrading
TersanelerBolgesi
GIPTASSanayiSitesi,A‐44
Tuzla,Istanbul34944
Nurettin(Mike)Caliskan
+902164470600
+902164470602
info@nevamarine.com
www.nevamarine.com
Page 7
SAFETYWARNINGSANDOPERATINGPRECAUTIONS
STABILIZERSYSTEMS‐DATUMCONTROLLED
IMPORTANT: Thoroughly read this Handbook prior to operating the control system. Do not operate the
stabilizersystemwithoutcompletelyunderstandingthesystem,itscontrolsandalloperatingfeatures.
DEFINITIONOFSAFETYTERMS:
TheSafetyAlertSymbolmeansATTENTION!BECOMEALERT!YOURSAFETYISINVOLVED!
WARNING
FailuretofollowWARNINGinstructionscouldresultinsevereinjuryordeath.WARNINGconditions
mayinclude,butarenotlimitedto,potentialdangertoequipmentoperators,crew,maintenance
personnel,bystanders,andanypersononboardornearthevessel.
CAUTION
ACAUTIONindicatesspecialprecautionsthatmustbetakentoavoiddamagetotheequipment.
SAFETYWARNINGS
A. RiskofFireorInjury(hydraulic):
The stabilizer system uses hydraulic power to operate the fin actuator assemblies. Failure of a
hydraulichoseor sealcan cause riskoffire, pollution and/orpersonal injuryor death. Whenin the
presence of a source of ignition, hydraulic vapors and/or fluids are flammable.Hydraulic fluids are
typicallyconveyed under pressure, enabling leaks to be manifestedasafinemistand/orprojected
greatdistances.Neverinstallhydraulichoseswherefailurecancause vaporsorfluidtobeincontact
withheatedsurfacesoranysourceofignition.Highpressurefluidleakscanpiercetheskin,requiring
immediate medical treatment. Proper installationand frequent inspection of the hydraulic system
including all interconnecting tubing, hosing and fittings, can reduce the risk of fire and injury. All
hydraulichosesandhydraulicsealshavelimitedservicelivesandarethereforesubjecttofailuredue
tonormalwear.Aperiodicreplacementscheduleisrequiredin accordance with manufacturer
guidelines,industrystandardsandrulesofgoverningandregulatorybodiesincluding,butnotlimited
to,theSocietyofAutomotiveEngineers(SAE),AmericanBureauofShipping(ABS)andLloyd’sRegister
of Shipping. An automatic fire detection and suppression system is strongly recommended in any
spacecontaininghydraulics.Alwaysensurethehydraulicsystemisdepressurizedbeforeservicing.
B. RiskofFireorInjury(mechanical):
UnlessotherwisespecifiedallhydraulicpumpandpumpdrivecomponentsmustbeinstalledwithSAE
Grade8(ISOGrade10.9)fasteners.Allinternalandexternalthreadsmustbecleanedanddriedand
then assembled with Loctite® or other suitable thread locking compound per manufacturer’s
specificationsandtorquedperSAEspecifications.Allscrewsassembledinsteelmusthaveaminimum
thread engagement of 1.5 times the screw diameter, assembled inaluminumaminimumthread
engagementof2.0times thescrew diameter. Allpumpdrivefastenersmust be regularlyinspected
notlessthanonceperyear.
WARNING
1of5
Page 8
SAFETYWARNINGSANDOPERATINGPRECAUTIONS
STABILIZERSYSTEMS–DATUMCONTROLLED
Installeracceptsresponsibilityforhydraulicpumpdrivegeneralarrangement,componentinstallation
and assembly. Installer also accepts responsibility for hydraulic pump drive proximity to adjacent
structuresandequipment,fitnessofpurposeandforobtainingenginemanufacturer’sfinalapproval.
C. RiskofFireorInjury(electrical):
Aqualifiedelectrician,workingincompliancewithallapplicablesafetystandards,isrequiredtoinstall
oroverseetheinstallationofallelectricalsystemwiring.Faultyordamagedwiringcanresultininjury
ordeathfromfireorelectrocution.Frequentinspectionofthesystemwiringfordamagedwiringor
cablingisrequiredtoreducetheriskoffireandinjury.Anywornordamagedwiringorcablingmust
bereplaced immediatelyto avoidthe riskof fireand injury.Electrical power mustbe disconnected
beforeservicingtheequipment.
D. RiskofInjury(onboardornearvessel):
Stayclearofallmovingpartsofthestabilizersystematalltimes,includingthehydraulicpump/drive
assemblies, and the fin actuator assemblies when they are not mechanically secured. Serious
personalinjuryordeathcanresultfrominterferencewithmovingpartsofthestabilizersystem.The
DATUM system can be programmed to automatically interrupt stabilizer activity, and then “Auto
Resume” under certain operational conditions. This will cause the system to temporarily appear
inactive,butsuddenmovementcanoccuratanytimewithoutwarning.Evenwhenthestabilizerand
hydraulic systemsare completely shutdown, wave motionsacting onthe finsor hydraulicpressure
release can cause unexpected fin and fin actuator assembly movement. If maintenance or repair
workistobeperformedonthesystem,thefinactuatorassembliesmustbesecuredwiththelocking
mechanisms or centering bolts, andtheprimemover(s)ofthehydraulic system pump(s) and the
DATUMcontrolsystemmustbeshutdownandsafeguardedtopreventinadvertentrestarting.
E. RiskofInjury(nearvessel):
Never allow any person to swim,dive,snorkelorotherwiseenterthevicinityofthestabilizerfinsat
anytimethesystemisinanyoperationalmode(anymodeotherthanCENTERByUserorOFF).Keep
all persons and watercraft of all types a safe distance from the stabilizer fins. The stabilizer fins
develop sudden and strong water eddies and currents which can cause serious personal injury or
drowning.Thestabilizerfinsmoveforcefullyoverwideoperatinganglesandattimesmightbreakthe
watersurface.TheCaptainshallberesponsiblefordeterminingtheminimumsafedistancebutinno
event shall it be less than the recommended distances shown on the illustration on the following
page.
F. RiskofInjuryordamage(suddenmovement):
Neverstartupthecontrolsystemwhilethehydraulicsystemispressurized.Beforepressurizingthe
hydraulic system, verify that the fins and fin actuation equipment are clearof all obstacles and
personnel.Toavoidsuddenmotionsofthefins,thesystemshouldalwaysbeelectricallyenergized
BEFOREthehydraulicsandelectricallyde‐energizedAFTERthehydraulics.
2of5
Page 9
STABILIZER FIN DANGER ZONE
! WARNING !
DANGER ZONE RADIUS ON BOTH PORT AND STARBOARD.
SWIMMERS MUST STAY OUT OF THE DANGER ZONE
WHENEVER THE FIN STABILIZER SYSTEM IS HYDRAULICALLY
ENERGIZED OR THERE IS POTENTIAL FOR THE FINS TO ROTATE.
STABILIZER DANGER ZONE
MODEL RADIUS
162 / 174-1 10 FEET [3 M]
252 / 254 15 FEET [4.5 M]
302 / 320 20 FEET [6 M]
353 / 360 25 FEET [8 M]
420 30 FEET [9 M]
525 35 FEET [11 M]
575 / 621 40 FEET [12 M]
720 45 FEET [14 M]
820 50 FEET [15 M]
925 55 FEET [17 M]
! WARNING !
MANY NAIAD FIN STABILIZERS ARE DESIGNED TO FUNCTION WHILE THE
VESSEL IS AT ANCHOR OR ADRIFT. THE FIN MOTIONS CAUSE STRONG
EDDIES WHICH CAN BE HAZARDOUS TO SWIMMERS, DIVERS, AND
PEOPLE IN SMALL WATER CRAFT. THE FIN MOTIONS ALSO CREATE
PINCH POINTS BETWEEN THE TOP SURFACE OF THE FIN AND THE HULL.
STAY CLEAR OF DANGER ZONE WHEN THE STABILIZER SYSTEM IS
ACTIVE! THE DANGER ZONE EXTENDS VERTICALLY FROM THE WATER
SURFACE TO A DISTANCE EQUAL TO ONE "DANGER ZONE RADIUS"
BELOW THE FIN.
THE CAPTAIN IS RESPONSIBLE FOR POSTING APPROPRIATE
WARNINGS AROUND THE VESSEL AND TAKING APPROPRIATE
PRECAUTIONS.
3of5
Page 10
SAFETYWARNINGSANDOPERATINGPRECAUTIONS
G. RiskofInjuryordamage(alarms):
Anyalarmmust be investigatedimmediately.Acknowledgingorinhibitingthe alarm and continuing
tooperatethestabilizersystemwithoutcorrectingthecauseofthealarmmaydamagethestabilizer
system, other equipment, thevessel, and/or cause personal injury.The ability to acknowledge and
inhibit alarms is included as a temporary means of retaining use of the stabilizers in emergency
situationsanddoesnotrelievetheoperatoroftheresponsibilityforsafeoperationofthesystem.The
systemisspecificallynotintendedtooperatewithacknowledgedorinhibitedalarmscontinuouslyor
forextendedperiods.
H. RiskofInjury(competency):
The procedures,instructionsandotherinformationinthisHandbookhavebeencompiledunderthe
assumption that persons following them will have received adequate training. Such persons are,
therefore,deemedtobecompetenttoactatalltimeswithdueregardforthesafetyofthemselves,
otherpersonnelandequipment,andalsotoemploysoundengineeringpractices.
I. RiskofInjury(general)Riskofinjuryordamage(mountingstructure):
Carefulconsiderationmustbegiventothedesignofthemountingstructuretoensureitsabilityto
transmitandsafelydistributetheloads from thefin actuatorassemblies tothe hull.Thetypeof
structure that is required will vary, depending on the hullmaterial andthe structural members
adjacentthefinactuatorlocationswithinthehull.Properhullreinforcementisbestdeterminedby
anavalarchitectbasedonequipmentloadinginformation(relatedtofinsizeandvesselmaximum
speed)availablefromNAIAD.Thedesign of thehull reinforcingstructuremustinclude adequate
marginsofsafetytoaccommodateunusualconditionssuchasthefinsstrikingasubmergedobject,
andmustconsiderfatiguestrengthduetotheoscillatingnatureoftheload.
J. RiskofInjury(general):
Observe all warnings in this Handbook and comply with all applicable safety standards and
regulations.
OPERATINGPRECAUTIONS
A. ApplicableStandards:
Allprocedures,instructionsandguidelinescontainedinthisHandbookaresubjecttoconformance
withallapplicablecodesandstandardssuchasthosedefinedby,butnotlimitedto,theSocietyof
Automotive Engineers(SAE). Allhoses, tubing andfittingsare to bechecked on aregularbasis for
signsofwear.Anyhosesortubingfoundtobedamaged,wornor otherwise defective must be
replaced immediately in accordance with SAE standard J1273. Replacement hose must be rated
appropriatelyfortheintendedserviceandmustbeproperlycleanedandflushedpriortoinstallation.
STABILIZERSYSTEMS–DATUMCONTROLLED
WARNINGandCAUTION
4of5
Page 11
SAFETYWARNINGSANDOPERATINGPRECAUTIONS
STABILIZERSYSTEMS‐DATUMCONTROLLED
B. ElectricalWiring:
Verifyall electrical interconnections before operatingthe system. Systemdamage and/or riskof
fireand injurymay becaused byincorrect wiring. Damage resulting from incorrect wiring is not
coveredunderwarranty.
C. Obstructions:
Finsandallmovingpartsofthestabilizersystemmustbefreeandclearofallobstaclesandpersonnel
beforethesystem isoperated. Seriousdamageto the fins,thesystem,thehullorotherequipment
canresultfrominterferencewithadock,pylon,quayoranyothersolidsurface.
D. Maneuvering:
Movingastern(backing down)canseriously damage stabilizerequipment becauseextraordinaryfin
forcesaregeneratedifthefinsareallowedtodriftfromtheircenterposition.
FinsmustbeinCENTERwiththehydraulicsystempressurizedwheneverthevesselismaneuveringor
backingdown.FailuretoCENTERthefinscancauseseriousdamagetothestabilizersystem.If
automaticCENTERING,byspeed(viaspeedinput)orbygear(viatransmissionsensor), isdisallowed
throughthecontrolsystem,thefinsmustbemanuallycenteredbypressingtheCENTERcommandon
thegraphicaldisplaypanel.Ifperformingvesseltestssuchascrashstops,ormotoringasternabove2
knots,thefinactuatorassembliesmustalsobemechanicallylockedatcenter.
E. FinImpacts:
Thestabilizer systemmust never besubjected to the extraordinaryforcesthatwilloccurifthefins
impactthesurfaceofthewater,strikeanunderwaterobject,orground.Topreventseriousdamage
to the equipment, the Captain must take whatever measures necessary to prevent the fins from
breakingthesurfaceofthewater,strikingunderwaterobjects,andgrounding.
F. ControlSystemAdjustments&Tests:
Untrainedpersonnelmustnotattemptcontrolsystemcalibrationoradjustmentswhileunderway
sincesuddenvesselmovementmayresult.Neverperformforcedrolltestswithoutpropertraining
and precaution preparations includingadvising all onboardpersonnel of the likely effectsof the
tests,securingallobjectsandcargo,andprovidingtheabilitytoimmediatelyreversefinresponse
todampenrollifforcedrollbecomesunsafe.
G. Display:
TheDATUMcontrolsystemmustnotbeleftunattendedwhiletheGraphicalDisplayisinLIGHTINGor
CONTRASTadjustmentmode.Importantsysteminformationandalarmswillnotbedisplayedwhile
theDisplayisinthismode.
H. PriorToLaunching:
The fin actuator assembliesare shippedwith lockingpins ormechanisms and/or centering bolts or
cylinders holding the fins at center position. These must be in place during the vessel launch.
Launchingthevesselwithoutthefinslockedincentercancauseseriousdamagetotheequipment.
5of5
Page 12
SECTIONI
STABILIZERSYSTEM
USA UnitedKingdom Netherlands France AsiaPacific
Connecticut Southampton Maastricht LaCiotat Perth,Australia
+12039296355 +44(0)2392539750 +31(0)436049200+33(0)486060005 +61(0)451699676
Maryland
+13016902010
Florida
+19547977566
www.naiad.com
sales@naiad.com
service@naiad.com
Page 13
TABLEOFCONTENTS
SectionI GENERALDESCRIPTIONPAGE
THEADVANTAGESOFSTABILIZATION......................................................................................................1‐1
ASUPERIORSYSTEMFORROLLSTABILIZATION......................................................................................1‐3
PRINCIPLESOFNAIADSTABILIZATION.....................................................................................................1‐3
SYSTEMCOMPONENTSANDFUNCTIONS................................................................................................1‐3
SPECIFICATIONS............................................................................................................................... ..........1‐7
GENERALSAFETYPRECAUTIONS..............................................................................................................1‐8
SectionII MAJORCOMPONENTS:APPLICATIONANDINSTALLATION
GENERALAPPLICATION&INSTALLATIONCONSIDERATIONS.................................................................2‐1
FININSTALLATIONANDREMOVALPROCEDURE.....................................................................................2‐3
HYDRAULICCOOLINGWATERSYSTEM....................................................................................................2‐6
HOSEINSTALLATIONREQUIREMENTS.....................................................................................................2‐7
INTERCONNECTINGHOSINGORPIPING..................................................................................................2‐8
GENERALELECTRICALINFORMATION......................................................................................................2‐9
ELECTRICALBONDING............................................................................................................................... 2‐9
INITIALSTARTING,INSPECTION,ADJUSTMENTS&OPERATIONALTEST................................................2‐10
SectionIII OPERATINGINSTRUCTIONS
IMPORTANTOPERATINGPRECAUTIONS.................................................................................................3‐1
CHECKBEFOREDEPARTURE.....................................................................................................................3‐2
ADDITIONALOPERATIONALPRECAUTIONS.............................................................................................3‐2
SectionIV MAINTENANCE
GENERAL....................................................................................................................................................4‐1
LOCKINGTHEFINACTUATORASSEMBLY.................................................................................................4‐1
ROUTINEMAINTENANCE..........................................................................................................................4‐2
FINLOCATIONGUIDE
HYDRAULICNOISEPREVENTION
REMOVINGANDREPLACINGTHEPOTENTIOMETER
CHARGINGANDMAINTAININGTHEHYDRAULICACCUMULATOR
APPENDIX SYSTEMDRAWINGS
NOMENCLATUREANDCOMMONABBREVIATIONS
FRACTIONAL‐DECIMAL‐MILLIMETERCONVERSIONTABLE
UNITSOFMEASURECONVERSIONTABLE
LOCTITE242DATASHEET
3M5200MARINEADHESIVESEALANTDATASHEET
LUBRIPLATEMULTI‐LUBEADATASHEET
LOCTITEMARINEGRADEANTI‐SEIZELUBRICANT
Page 14
GENERALDESCRIPTION
THEADVANTAGESOFSTABILIZATION
Ofthevariousmotionstheseamayimposeonafreelyfloatingvessel,itisrollthattypicallycauses
the greatest discomfort and concern.Powered boats over 30 feet in length can be made
considerablymorecomfortableforpassengersandcrewandmoresecureforcargoand
equipment
bydecreasingrollingmotion.Asrollisdecreased,yawisalsodecreased,resultinginreducedcrew
fatigueand better autopilotresponse.Damageto vehiclesor merchandiseaboard cargovessels
canlikewisebereduced.Furthermore,speed andeconomyinase aw ay aretypicallyimproved.
A. RollingPeriod
Eachvesselhas
itsown rollingperiod(thetimeittakestorollfreelyfromstarboardtoport
and back again) that is a measure of its own natural rhythm.It can roll slightly or
dramatically,butthe timeittakes will bethesame.Thevessel's rolling period,sometimes
referred to as
its natural frequency, is determined by its hull shape, beam and weight
distribution.
Rollingis of greatest concern when wave periods are closest tothe vessel's natural rolling
period.Whenwavesarefairlyregular,aminorchangeincourseorspeedmayalle viate some
ofthissynchronousrolling.However,ifa
changeincourseorspeedisnotmadeorifthesea
conditions deteriorate, the constant nudging from near harmonic wave trains against the
vesselwillcauserollingmotiontosteadilyincrease,perhapstoadangerousdegreeinrough
seas.
B. StabilizerEffectiveness
TheNAIAD®ActiveFinStabilizationSystemeffectively
dampenssynchronousrollingbecause
it anticipates roll by measuring roll velocity (which is greatest when passing throughlevel
attitude),rollangle,androllaccelerationandintegratesthesesignals.TheNAIAD stabilizer
responds quicklyandsmoothly, damping the roll at ornear the vessel'snatural frequency.
Thus,thesystemkeep sthe
vesselextraordinarilystableunderawiderangeofse aconditions.
Wavesthatcoincidewithavessel’snaturalfrequencyaretypicallysmallinheightandhighin
frequency.These waves pose little danger but can resultin considerable discomfort. The
NAIADsystemhasproven,eveninroughseas,itssuperiorcapabilityto
reduceroll.
NAIAD stabilizers also provide afavorable side benefit in that the vessel enjoys improved
steeringresponse.Reducingavessel'srollalsoreducesitsyawwhichresultsinsignificantly
reducedsteeringeffort.Reducedyawand steeringeffortimprovespeedandfueleconomy.
1‐1
Page 15
GENERALDESCRIPTION
WATER LINE
E
C
R
O
F
FIN UNIT
STARBOARD
NAIAD SYSTEM PICTORIAL
ROLL
HYDRAULIC
RESERVOIR
TYPICAL
PUMP
TYPICAL
HYDRAULIC
FORCE
FILTER
PRESSURE
INOUT
HEAT
EXCHANGER
NOTE:
FINS SHOWN
ROTATED CCW
E
PORT
FIN UNIT
C
R
O
F
LOOKING FORWARD
1‐2
Page 16
GENERALDESCRIPTION
ASUPERIORSYSTEMFORROLLSTABILIZATION
TheNAIAD®rollstabilizerprovidesaneffectiveandreliablemeansofreducingtherollingmotionof
vesselsatsea.Therangeofavailablemodelsissuitableforpleasurecraftandworkboatsfrom30
toover300feet(10to100meters)inlength.
Using
fins on both sides of the vessel's hull, the NAIAD stabilizerwill automatically dampenroll
motionuptoninetypercent.Asinglepairoffinsisnormallyselectedtoavoidthedisadvantagesof
multiple‐pairinstal lat i on s.
WiththeDatumangle,velocityandaccelerationelectroniccontroller,theNAIADrollstabilizeris
complete rollcontrol system:efficient and fullyproportionalsensingand damping ofvesselroll.
Thiseffectivesystemoperatesquietlyandautomaticallywithonlyminimalinputpowerrequ ired.
PRINCIPLESOFNAIADSTABILIZAT ION
Hydrodynamicallyefficientfins(typicallyaport /starb oardpair)projectfromthemidshipssectionof
the hull well below
developliftforces.
Assoonas thevessel beginstoroll, the electronicmotion sensor packageresponds totheangle,
rate(velocity)andaccelerationoftherollbyap plyingacalibratedamountofcorrectiveangletothe
fins.For
example,iftherolltendencyistostarboard,thefinsimmediatelyrotateclockwisetothe
exactangleneededtodampentheroll.Thewaterflowingovertheangledfinsproducesprecisely
the proper amountof lift force required to generatean equaland oppositerighting momentto
neutralizetheroll.Thus,
Datum equipped NAIAD stabilizer worksso quickly and accurately that a typical roll tendency is
suppressedbeforeitcandevelop.
SYSTEMCOMPONENTSANDFUNCTIONS
The typical NAIAD stabilizer system consists of a hydraulic pump
assemblyoracompletelyinte gratedhydraulicpowerpack,twofinsandfinactuatorassembliesand
the Datum ControlSystem (consistingof Control Module(s), Graphical Display(s) andthe Motion
SensorPackage).
A. HydraulicPumporHydraulicPowerPack
The hydraulicsystem is typically supplied by apressure
oftendrivendirectlyfromapropulsionenginepowertakeoff(PTO)orfromanelectricmotor.
If driven electrically, the motor and starter may (optionally) be supplied prewired and
packagedattheNAIADfactory.
Ifthehydraulicpumpisdriven from a propulsion engine, an optional
providedtoensurestabilizerperform ancewithonlyonepropulsionengineoperating.
B. PressureFilterAssembly
Hydraulicoutput from thepump(s) is directed through afine three‐micronpressure filter.
Thecapacityofthisfilterisconsiderablyoversizedtoallowyearsofservicewithoutchanging
thefilter
filter assembly includes a dirt alarm that indicates when it is necessary to change the
element.
the waterline.The fins rotate clockwise and counterclockwise in unison to
thetendencyoftheboattorollfurtherinthatdirectionischecked.The
package and fluid conditioner
compensated piston pump that is
secondpumpmaybe
element.Asparefilterelementis provided witheach newsystem.Thepressure
1‐3
a
Page 17
GENERALDESCRIPTION
C. HydraulicReservoirAssembly
The hydraulic reservoir assembly is usually installed in the engine room.It includes a
compactreservoirwithalowoillevel/highoiltemperaturewarningswitch,aheatexchanger
for controlling oil temperature, a pressure relief valve for maintaining hydraulic system
pressure, a system pressure gauge, an
pressurizationofthesystemandpassagesandorificesforcontrollingthehydr aulicsystem.
D. HydraulicPowerPack
Somesystemsuse an integrated powerpacktoprovidehydraulic flow and pressureandto
providetotalfluidconditioning.Thepowerpackcombinestheotherwiseseparatehydraulic
componentsinacompactenergyefficientpackage.Themaincomponentsofthepowerpack
includevariable‐displacement,axial‐piston,pressure‐compensated orload‐sensinghydraulic
pumpscoupledto high‐efficiencyelectric motors.Thereservoir assembly containsinternal
baffling,3micron hydraulic filtration,cupro‐nickel heatexchangers,atunedhydraulicnoise
suppressor and alarm indicators for fluid level, temperature, pressure and vacuum.The
entire power pack is designed for quiet operation and maximum power density in an
attractivepackagewithyacht‐qualityfitandfinish.
E. Finan dActuatorAssemblies
The fins and fin actuator assemblies are installed as close to
middlefifthofthevessel'swaterlinelengthorforcertainvessels,themiddleonethirdofthe
vessel’swaterlinelength.Thislocationisoftenwithintheengineroomsoplumbingrunsare
madeeasily.Thefinsaremountedperpendiculartothehullsothatthey
vessel's beam or draft (the “block section”), eliminating docking and shallow‐water
navigationproblems.
A single pair of fins has advantages over multiple pairs.However, multiple pairs may be
recommendedforvesselswithashallowdraftrelativetotherequiredfinarea.
Thefinactuatorassemblies
consistofastronghousingintowhichareassembledheavy‐duty
tapered roller bearings on a heat‐treated stainless steel shaft.Double‐acting hydraulic
cylinders and splined torquearm deliver power to rotate the shaft and fin in response to
pressurized oil from a precision electrohydraulic servo valve. This servo valve
modulatedbyarolldampingelectronicsignalfromtheDatumControlSystem.Anelectronic
controlfeedbackpotentiometerconnectedtothefinshaftprovidesclosedloopfinposition
control.A simple mechanical lock provides a means for securing the fins in their neutral
positionwhenthestabilizerwillnot
beusedforextendedperiodsorforservicingthesystem.
Doubleshaftsealsprevententryofseawaterintothebearings.Marinegradegrease inside
the actuator housing lubricates and protects the heavy‐duty tapered roller bearings that
supportthefinsh aft.
NAIADfinactuatorassembliesaresuppliedinvariousmodels
vesselsfromapproximately30to300feet(10to10 0meters)inlength.
Eachfinactuatorassemblymodelisdesignedtopowerseveral standardfinsizesoverarange
of vessel speeds. Typical fin sizesrange from 2.5 to 75.3 square feet (0.23 to 7.00
2
meters).Finsizesthrough 38ft
(3.53m2)featurearuggedcompositeconstruction ofhigh‐
density foam encased in a heavy fiberglass shell.These materials surround a precision‐
1‐4
electrical solenoid valve for controlling the
amidships as possible in the
donotexceedthe
is fully
andsizestoeffectivelystabilize
square
Page 18
GENERALDESCRIPTION
machined stainlesssteel structuralinsert that mates with the tapered stainless steel shaft
extendingfromthefinactuatorassembly.Thisconstructionprovidesadurablefinyetallows
thestructuretoyieldtosevereimpactsuchasexperiencedduringgroundingorincollisions
withlargesubmergedobjects.
F. DATUM™StabilizerController
Thoughabrief overviewofthe Datum StabilizerControlleris presentedhere, theoperator
mustrefertotheSystemOperationsectionofthishandbookforadetaileddiscussionofthe
DatumStabilizerController,itsfeaturesanditsoperation.
Thefinsarecontinuouslymodulatedbyastate‐of‐the‐artsystem
Angle,Roll Velocityand RollAcceleration) digitalcontrollerwith precision electro‐hydraulic
servo valves and closed loop feedback.Naiad Dynamics has applied and developed the
essential controltheory inthousands ofsuccessful ship stabilizerapplications.Thecontrol
systemoffersfullyproportionalandfullyautomaticsensing
assemblies, which results insmooth, exactstabilizer operationwithout objectionabledead
bandorlag.Thecontrolsysteminfinitelyadjuststhefinrotationtoexactlymatchthevessel’s
rolltendency,whichensuresmaximumrollreductionperform ancewithminimumdrag.
relieduponinaerospace,railway, automotive andotherperformancedrivenandreliability‐
criticalapplications.The easily expandabledistributedcontroller minimizescable runsand
spaceconsumption, while enhancingmountingand configuration flexibility.The resultis a
cleaner,neater,morereliableand higherperformingmotioncontrolsystemthan
systemavailabletoday.
The DATUM™ Controller represents the culmination of our experience in ship roll
stabilizationtechnology gainedoverseveraldecades.Inaddition to the5,000+ship sets of
rollstabilizersmanufacturedandsupplieddirectlybyNaiad,theequipmentbenefitsfromthe
unrivaledexpertiseand cooperationofour
jointlyownedandaffiliatedcompaniesofNaiad
Maritime Group.Naiad MaritimeGroup includesstabilization leadersNaiad DynamicsUS,
Naiad Dynamics Holland, and Naiad Dynamics UK. Naiad Maritime Group stabilization
equipmentisactiveonmorethan14,000ships,hasbeensuppliedto55oftheworld’snavies,
including to US Navy advanced
hull forms, and is operating on hundreds of fast ferries
including catamarans, trimarans, SWATHs and SES. Through extensive research and
developmentandunparalleledfieldexperience,NaiadMaritimeGroupacquireduniqueand
extensive knowledge and has perfected its capabilities in stabilization and Ride Control
Technology.
1‐5
featuringathree‐term(Roll
andactuationofthefinactuator
The DATUM (Dynamic Adaptive
Technology for
Universal Motion
control) istheworld’s first purely
digital three‐term (Angle,
Velocity, and Acceleration)
stabilizer control system using
adaptive technology and
operating on a distributed
network.The DATUM utilizes a
proven and highly reliable CAN
(Controller Area Network) bus.
This modern system architecture
is ideally suited for high‐speed
control
applicationsandisheavily
anyother
Page 19
GENERALDESCRIPTION
Inthisapplication,theDATUMdigitalcontrollerwillcommandthefins in proportiontothe
followingthreeinputs:
RollAngle
RollVelocity(“Rate”)
RollAcceleration
OperatorinterfacewiththeDATUMisbymeansofa
color touch screen graphical display. The graphical
display features several user‐friendly menus and
screens,
and each with a set of control navigation icons to
allow the user convenient access to the other
functionalscreenswithinthecontrol.Throughthese
screens, the operato r may select between
stabilization AtSpeed® (underway) and stabilization
AtRest®(atanchor)operatingmodes.
While underway, stabilizer performance
(‘gain’)adjustmentsintheAtSpeedmode,whereinfinrotationiscontinuouslymodulatedin
both speed and angular position to exactly match the roll tendency.Alternatively, the
DATUMmaybesettoopera teinAdaptivemode.InAdaptivemode,thesystemse lf ‐tunesits
gainssettingstoautomaticallyoptimizestabilizerperformancetosuitvaryingseaconditions
and headings.This adaptive capability is standard in every DATUM control system as an
enhancementtothenormalclosed‐loopproportiona lcontrolofthefins.
NAIAD’sstabilizationAtRest(S@A®)controlisfullyproportional,howeversystemgainsmay
also
accordingtothecomfortpreferencesofthepassengers.
Other key features of theDATUM controller include automatic centering ofthe fins when
movingastern and continuous fin anglemodulation asafunctionofshipspeed.Thelatter
feature is
DATUM features an adjustable Heel Angle Compensator.Under certain conditions, the
vesselmayexperiencea“natural”heelresultingfromvesselloading,windorseaconditions.
TheHeel Angle Compensatoradjustment letstheoperatorcontrolhow muchor how little
heelanglethecontrollerwillallow.Thisisparticularlyusefulforlongpassagesduringwhich
someheelangleistolerableforthesakeofgreaterfueleconomyathigherspeed.
G. DatumStabilizationAtRest®Features&Operation
Ayacht at anchor subjectedto evenmodestwaves with a frequency at
naturalrollperiodwillrolluncomfortably.NAIAD’sAtRestcontrolisidealfor irregular seas
associatedwithharborconditions.Rollisdetectedbythesystemwithitsextremelysensitive
three‐termelectronic sensor package.The sensorstransmit precise signalsto the system’s
digitalcontroller,whichprocessesthem
hydraulicservovalvestoresultinquick,highlyre sp onsiverotationofthefins.
By accurately and proportionally controlling the fin rotational movement, a smooth,
substantial righting force isproduced to counteractthe vessel’s rolling motion. This force,
generatedbythefins in proper
the ship’s roll axis to provide the required righting moment to dampen the vessel’s roll
tendency.
each with specific features and functions
may be customized with simplesystem sensitivity
be adjusted to obtain maximum roll damping comfort in various sea conditions
essential for cavitation control during higher speed operation.In addition, the
ornearthe yacht’s
andproducesacalibratedcommandtotheelectro‐
phaseandwithpreciselytherightmagnitude, acts through
1‐6
Page 20
GENERALDESCRIPTION
Toaccommodatethehigher torquerequirements of zeroforwardspeed rollreduction,the
hydraulic system is configured with greater capacity.The hydraulic system efficiently
generates the required flowand pressure to swiftly modulate the fins while automatically
conserving power when full fin movement is not required.Other modifications to the
hydraulic
expectationof an anchoredyacht.Power Packsare isolation mountedand equippedwith
hydraulicin‐linenoisesuppressors.
TotransmittheforcesimposedupontheequipmentduringAtRestoperation,thefinshavea
reinforced internal structure and the
modifications, enhanced structural capacity, and greater rotational capability.The fin
assembliesalsoincludeintegraltipfencestomaximizetheutilizati onofthecontrolsurfaceat
zerospeedwhileal soenhanc ingtheunderwaylift‐dragcoefficient.
These construction features, as well as NAIAD’s overriding attention
combinetoassuremanyyearsoftrouble‐freesystemperformance.
SPECIFICATIONS
A. DatumStabilizerController
TheNAIAD system isfully proportional.T herefore,it willautomaticallyrespond tovarying
seaconditionsandhullspeedsbycontinuouslyrotatingthefinstoagreaterorlesserdegree
according
achievedwithminimaleffort,powerconsumption,anddrag.
B. NormalOperatingPressure
Operatingpressureiscontrolledbythepressurecompensatorsofthevariable‐displacement
axial‐piston pressure‐compensated or load‐sensing hydraulic pumps.There is also amain
systemrelief valveset tohigher pressure toprotect thesystemif required.Theoperating
pressureisfactorypresetandmayvarydependingonthestabilizermodelanditsoperating
requirements,includingst abili zat i onunderwayandstabilizationatanchor.
C. RequiredHydraulicFlow
Each NAIAD model requires a specific minimum hydraulic
operation.Minimum flow rates for each model are provided with the hydraulic system
specificationandrequirethatthepumpsbesizedtoachieveatleasttheminimumflowrate
atthelowestdrivespeedatwhichfullstabilizationcapabilityisdesired.Correctspecification
ofthehydraulic
alsoimportantvesselcharacteristicssuchthenaturalrollperiod.
D. FinForces
NAIAD systems are designed to withstand the forces generated by the fins at maximum
operatingangleand atmaximumrated speed.With theproper hydraulic pressure
attenuation settings, the maximum angle of attack the fins achieve will automatically
decrease as hull speed increases.Seating of the actuator assembly in the hull (“hull
foundation” or “mounting structure”) mustbe constructed to safely distribute fin‐induced
hullloads,includingloadsduetogrounding.NaiadDynamicsEngineering
estimatesofthefinforcestoNavalArchitectsforuseindesigningthehullreinforcement.
system include special attention to noise suppression to suit the low noise
fin actuator assemblies feature several component
to detail and quality,
to current conditions.In this manner, maximum roll reduction performance is
flow to achieve proper system
flowratedependsnotonlyonthestabilizermodel underconsiderationbut
andfin
routinelyprovides
1‐7
Page 21
GENERALDESCRIPTION
GENERALSAFETYPRECAUTIONS
A. MountingStructure
Carefulconsiderationmustbegiventothedesignofthemountingstructure(ship’sseating)
to ensure its ability to transmit and safely distribute the loads from the fin actuator
assembliestothehull.Thetypeofstructurethatisrequiredwillvary,
material and structural members adjacentto the fin actuator locations withinthe hull and
the requirements imposed by any involved classification society rules.Proper hull
reinforcement is best determined by a naval architect based on equipment loading
information(relatedtofinsizeandvesselmaximumspeed)
The design of the hull reinforcing structure must include an adequate margin of safety to
accommodate unusual conditions such as the fins striking a submerged object, and must
considerfatiguestrengthduetotheoscillatingnatureoftheload.
B. InterconnectingHosing&Piping
Installer furnished
hosing and piping must be selected to suit the flow and pressure
requirements of the systemwith adequate margins of safety and in accordancewith SAE,
ISO, Lloyds Register of Shipping, American Bureau of Shipping or any other applicable
classificationsocietyrules.Hosingmustnotbeinstallednearhotsurfaces
systemvaporsmightcontributetofire.Neverdisconnectanyhydraulicconnectionwhilethe
hydraulicpumpisinoper at ion.
C. Maneuvering
Moving astern (backing down) at high power can be dangerous because extraordinary fin
forcescanbegeneratedifthefinsareallowedtodrift fromtheircenter
thisconditionthefinsmustbehydraulicallypressurizedandthecontrollerinCENTERmode
toprovidepositivehydrauliccenteringofthefins.
D. OperatingPrecautions
Thoroughly read and understand all operating instructions within this handbook before
attempting to operate the stabilizer system. There are certain important procedures,
outlinedintheoperatinginstructions,whichmustbefollowedinordertosafelyoperatethe
NAIADstabilizersystem.Incaseofquestions,contactCustome rServicebeforeattemptingto
operatethesystem.
E. StayClearofMovingParts
Never come in close proximity with equipment that is in motion, or
moving, since serious personal injury may result.Stay clear of rotating pump drive
components including belts, pulleysand couplings.Stay clear of thefin actuatorassembly
whenever it is not mechanically secured and at all times while the vessel is underway.
Certainoperationalmodesmaycausetheequipment
automaticallyresumeatanytimewithoutwarning.
WARNING
1‐8
CAUTION
dependingonthehull
availablefromNaiadDynamics.
orwherehydraulic
position.To avoid
capable of suddenly
toappearinactive,butmovementcan
Page 22
GENERALDESCRIPTION
F. ControlSystemAdjustments&Tests
Untrained personnel must not attempt control system calibration or adjustments since
suddenanddramaticvesselmovement can result.Neverperformforcedrolltests without
propertrainingandprecautionpreparationsincludingadvisingallonboardpersonnelofthe
likely affect of the tests, securing all objects
immediatelyreversefinresponsetodampenrollifitbec omesunsafe.
G. FinAngleLimitingWithIncreasingHullSpeed
The Datum controller provides automatic fin anglelimiting with increased vessel speed to
allowpracticalstabilizercapabilityoveragreaterrangeofoperatingspe ed s.
H. MechanicalCentering
Manuallyoperatedcenteringscrewsareprovided tosecurethefinsatcenter if thesystem
willbeinoperativeforanextendedperiod,ortofacilitateservice.Thecenteringscrewscan
alsobe usedto mechanicallymovethe finsto theircenterposition,if necessary,and then
holdthemthere.
WARNING:
To avoid personal injury, ensure that the hydraulic pumpis NOT running and that the
hydraulicsystemisde‐pressurizedbeforeusingthecenteringscrews.
Beforereturningtooperatingmode,alwaysensurethatthecenteringscrewsareinthefully
retractedposition.
I. AutoCenteringandHydraulicLocking
The
Datumsystemcanbeconfiguredtoassurethatthefinswillbecenteredforanumberof
conditionslistedbelow.Lockingvalveswillhydraulicallysecurethefinsatthecenterposition
toprotecttheequipmentwhenmotoringastern,andtopreventthefinsfromslammingdue
towaveactionwhen
thesystemisinactive .
The Marine Gear configuration function enables the Datum to monitor the vessel
transmission interlock switches and whenever an engine is shifted into neutral and/or
reversegear,thesystemwillautomaticallycenterthefins.Thispreventsdamage that may
resultfromextraordinaryfinforcesthatcouldbeencountered
itautomaticallysothathumanerroriseliminated,suchastheoperatorforgettingtocenter
thefinsatthedisplaypanel.
TheLowSpeed AutoCenteringThresholdwillautomaticallycenterthefinswhenthevessel’s
speedfallsbelowaprogrammablevalue,typicallybetween3and
eliminates human error by centering the fins at speeds usually reserved for close‐quarter
maneuveringanddocking.
TheMaximumLimiting Speedisthemaximumspeedforwhichthestabilizerhasbeenrated
foraparticularvessel.ThevalueisprogrammedintotheDatumaccordingto
and vessel specifications, and when this speed is exceeded, the fins will automatically be
centered.Thisprevents the cavitation athigh speedsthat mayotherwise occur ifthe fins
remainedactive.
1‐9
and cargo, and providing the ability to
whenmovingasternanddoes
4knots.Thisfeaturealso
theequipment
Page 23
GENERALDESCRIPTION
Certain alarm conditions can be configured to prompt theDatum to center thefins.Low
hydraulic oil level, or high oil temperature can potentially cause damage to system
components, and the Datum can prevent damage by centering the fins whenever these
conditions are detected.Keepinmindthatother system
stillbesubjecttodamage,evenwhenthesystemiscentered,sohydraulicfluidalarmsshou ld
alwaysbeaddressedimmediately.
WhentheDatumisturnedoff,itautomaticallycentersthefins.Withthelockingvalves,the
finswillremainhydraulicallylockedatcenteruntilthe
J. Heat
Whensufficientcoolingwaterflowisprovided totheheatexchanger(s)inaccordancewith
the installation instructions, the hydraulic oil operating temperature should ideally be
between120and140
o
Fahrenheit(50and60oCelsius),andshouldneverexceed170oF(77o
C).Anoiltemperatureswitch(combinedwithanoillevelswitch)isinstalledinthesystemoil
reservoir.Theseswitcheswilltriggeranalarmifthetemperatureexceedsthepresetlimitor
iftheoillevelislow.
K. OtherSafetyPrecautions
The procedures detailed in this manual assume
that experienced, trained technicians are
performingtheworkandareadheringtosoundandnormallyacceptedmarineengineering
principles.Observe allmarine safetystandards and procedures.Stabilizer installationand
repair workshouldonly beundertakenby Naiadfactory‐trained technicians(consult Naiad
Dynamics for scheduled training seminars).All safety precautions throughout
sectionsofthishandbookmu stbeobserved.
components,suchaspumpsmay
systemisstartedagain.
the various
1‐10
Page 24
MAJORCOMPONENTS&INSTALLATION
GENERALAPPLICATION&INSTALLATIONCONSIDERATIONS
A. ShipStability
The rolling characteristics ofa shipatsea depend on severalvariables, includingthe size
and draught of the ship, the location of its center of gravity, the form ofits underwater
body,andthedistributionofweightintheship.These
“tender”ship,whichrollsslowlyandeasily,or in a “stiff” ship, which rolls with shortand
jerkymotions.Therollingoftheshipinaseawaywillalsodependonthewaveheightand
effectiveperiodofthewaves.
M, METACENTER
M
G
R
T
N
E
C
A
T
E
M
(
)
T
H
G
I
E
H
C
I
CG, CENTER OF GRAVITY
B
B1
B2
variablescancombinetoresultina
HORIZON
REFERENCE
CENTERS OF BUOYANCY
(CENTROIDS OF UNDERWATER SECTIONS
AT VARIOUS ANGLES OF HEEL TO 10°)
SHIP CENTERLINE
REFERENCE ONLY. NOT TO SCALE.
B. EffectofStabilizersonHullStability
Theinstallationof NAIAD®activefinstabilizershasbeenshowntoreducevesselrollbyupto
90%.Thisreduction of roll contributessignificantlyto comfort.Vessel roll isalmost always
accompanied by yaw, (wandering from the ship’s intended course).Yaw may
add to roll,
stress and wear the ship’s steering gear and autopilot, add to rudder drag, and result in
appreciablelossofspeedovergroundaswellasinreducedfuelefficiency.Theinstallationof
NAIADstabilizersreduceroll,andtypicallyreduceyaw.Thecombinationofreducedrolland
yawoften
decreasesthetimerequiredtotravelfrompointtopoint,therebyincreasingoverall
fuelefficiency.
C. GeneralFinArrangement
Slower vessels require larger fins to generate a given righting moment than faster vessels
becausefin lift forces increaseexponentiallywithspeed.Also, vessels withahard chinehull
design
mayrequirelargerfinstogeneratetheforcesrequiredtohelpovercomethegreater
buoyancyofthesechineswhenmeetingthewaveslopeofthesea.
For yachts designed to operate at highspeeds (generally 30 to 50 knots), specialfin shapes
may be recommendedto minimize drag while still
providing rollcontrol.With the DATUM
controlsystem,finangleislimitedasafunctionofhullspeed.StandardNAIADfinshavebeen
used successfully at speeds to 50 knots in their centered position.A single pair of fins is
typically fitted to the hull to provide highly efficient roll
reduction. The NAIAD system,
however,willjustaseasilyaccommodateasinglefinormultiplepairsoffins.
2‐1
Page 25
MAJORCOMPONENTS&INSTALLATION
D. FinSelection&Location
Required fin area is calculated based on many variables including the specific vessel’s size,
shape, loading and operational characteristics.Fins should be sized to generate lift forces
sufficientto producearighting momentofadequatemagnitude to stabilizethevessel ather
slowestnormaloperating
Finsaretypicallyinstallednormaltothehull,withintheblocksectioncreatedbythebeamand
thekeeltominimizethepossibilityofdamagefromstrikes.
LOCATE FINS AS FAR
OUTBOARD AS POSSIBLE
WHILE KEEPING THEM INSIDE
THE HULL ENVELOPE
TRAILING FIN
EDGE MAX.
speed.
ROLL AXIS
HULL ENVELOPE /
BLOCK SECTION
C
L
MIDDLE
1/5
TYPICAL LOCATION
(REQUIRED FOR VESSELS
WITH CRUSING SPEEDS OF
20 KNOTS AND ABOVE)
ACCEPTABLE LOCATION
(FOR VESSELS WITH
CRUSING SPEEDS UNDER
20 KNOTS)
FORWARD OF AMIDSHIPS)
AVOID PROPELLER
FLOW FIELD
OPTIMAL LOCATION
(WITHIN 1/10 OF
WATERLINE LENGTH
LEADING FIN
EDGE MAX.
1/31/3 MIDDLE 1/3
2‐2
Page 26
MAJORCOMPONENTS&INSTALLATION
Itisimperativethatthefinsareinstalledinthehullsuchthattheiravailableareaisefficiently
utilized,otherwisetheproportionalcontrolsystemwillcommandlargerfinanglestogenerate
theforcesrequiredto neutralizetherolltendency,thus causingincreased findragandwater
disturbance.Thestabilizingmomentcreated
ideallythe plane of thefinwhenmounted normal to thehullis not farfromintersecting the
roll axis.Transverse positioning of the fins is normally relatively outboard to maximize the
effectiveleverarmandavoidalignmentwith
ofthefinsshouldbenearthelongitudinalcenterofgravity,theentirefinwithininthemiddle
one fifth of waterline length (for slower vessels, the middle one third may be acceptable).
Manyadditionalfactorsmustbeconsideredwhenselectingfinlocationincludingproximity
other underwater appendages, proximity to the propeller or waterjet intake flow field,
extraordinary forces generated from pitching(as may occur if the fins aretoo far forward),
and the low deadrise of aft sections of the hull (which impair efficiency, causing wider fin
angles,greaterdragandincreasedfin
WARNING: CAUTION:
Fins must be located in accordance with Naiad Bulletin NB0105 and the Stabilizer
InstallationGuidelines.ConsultNaiad EngineeringorApplicationsDepartmentsforspecific
review.
bythefinsmustactuponthevessel’srollaxis,so
thepropellerflowfield.Longitudinalpositioning
to
wash).
E. ActuatorSelectionandHullReinforcement
FinActuators mustbeselectedtopowerthe finsandsafely withstandtheloadgeneratedby
thefins when driven throughthewater at their maximum underway finangleswhile at the
operating speeds of the vessel.Consult Naiad Dynamics for appropriate fin‐
combinationsforspecificvessels.
Fin Actuator hull reinforcement must be designed to accommodate not only the normal
operatingloadsgeneratedbythefinandfinactuatorcombination,butalsotheextraordinary
loadsencounteredduetofinstrikesorgrounding.
WARNING: CAUTION:
Designand fabrication of hullreinforcementfor aspecificvessel istheresponsibilityof the
installer. Naiad general guidelines are available, but each vessel must be considered
specifically. Installer consultation with a naval architect to determine an appropriate
structuretosafelydistributefinandactuatorloadsisrequired.
FININSTALLATIONANDREMOVALPROCEDURE
A. FinPainting
Clean,prime,andbottompainttheoutsideofthehullbeforeinstallingthefins.Sandthefins
to remove all traces of mold release material, then prime and bottom paint before
installation,beingverycarefultoprotecttheinternaltaperfrompaint
to‐actuator
anddebris.
2‐3
Page 27
MAJORCOMPONENTS&INSTALLATION
B. FinInspectionandCleaning
Before installation, clean both the fin and shaft tapers thoroughly.Examine the external
shaft taper and internal fin taper surfaces for burrs, nicks or any other surface
irregularities.If present, surface protrusions must be removed by carefully filing or
stoningthemflushandcleaningthesurface.
CAUTION:
Theinternaltapered bore of the fin and external tapered surfaceof the shaftMUST be
cleananddryandfreeofpaint,debrisandallothercontaminants.
Cleananddrymating surfaces are essential for proper fin lockingandholding.DONOT
coatthetaperwithanti‐seizecompound,
C. FinInstallation
Fininstallationrequiresthe use of a hydraulic Pilgrim nut in combination with high‐pressure
oilinjectionintothefinstructure.TheproceduresaredetailedintheFinInstallationdrawing
(0575D0127)andtheStabilizerInstallationGuidelines.Ensurethat the
aresecuredinthecenterpositionwiththelockingpinsbeforeinstallingthefins.Whenthefin
isfully seatedontheshaft andthePilgrim nut isremoved,clean andcoatthe threadsofthe
finshaft with Loctite Marine Grade Anti‐Seize lubricant before installing the
thefinnuttothevaluespecifiedontheFinInstallationdrawing.
WARNING:
The Fin installation procedure will require the use of heavy lifting equipment, and
high‐pressure hydraulic hand pumps.Ensure that all operators are adequately
trained and supervised, and observe all safety warning contained in the Fin
Installationdrawing(0575D0127)and theStabilizerInstallationGuidelines.
D. MinimizingFin‐to‐Hull
1. Maximumfin‐to‐hull clearance is 1.00 inch (25 mm) for model575.For higher speed
operation (over about 20 knots) fin‐to‐hull clearance must be kept to an absolute
minimum.Excessivefin‐to‐hullclearancecreatesdisturbedwaterandnoise.
If necessary, the fin’s root
achieve the proper fin to hull clearance.Typically this is done across the entire root
surface, but the build‐upcan be gradualto match a curved hullcontour.It is essential
thatall modifications haveasmooth, tapered
create water disturbance and hydro‐dynamic noise. Make sure to protect the female
taperedboreinthefinwhenaddingmaterial.
Clearance
chord surface (surface closest to the hull)can be built up to
oil,grease,orsealantsofanykind.
finactuatorassemblies
finnut.Torque
transition.Blunt edges inanyplanewill
2‐4
Page 28
MAJORCOMPONENTS&INSTALLATION
FIN BUILT UP ACROSS
ENTIRE ROOT SURFACE
FIN BUILT UP
GRADUALLY ALONG
ROOT SURFACE
IMPORTANT:
ANY MODIFICATIONS
MUST HAVE A SMOOTH,
TAPERED TRANSITION.
NO BLUNT EDGES IN
ANY PLANE.
E. SettingNeutralPosition
1. Neutralpositionof thefins(“zero angleofattack”)mayberoughlyestimatedbysetting
thefins paralleltothe keel.Ideallythefinsshouldbe setat theirtruezerowhichis the
position aligned with the actual water flow at cruising speed.Generally,
maybeestimatedbysettingthetrailing edgeslightly outboardif thefinsareforwardof
longitudinalamidshipsandslightlyinboardifthefinsareaft ofamidships.
FIN ALIGNMENT AFT OF AMIDSHIPS
(TRAILING EDGES SLIGHTLY INBOARD)
FIN ALIGNMENT AT AMIDSHIPS
(PARALLEL TO KEEL)
FIN ALIGNMENT FORWARD OF AMIDSHIPS
(TRAILING EDGES SLIGHTLY OUTBOARD)
2. Neutral position of the fins may be finely adjusted via the DATUM™ control.Consult
Naiad Engineering for this procedure.When
underway, the position producing the
lowestnoiseandhighest engineRPMusuallycorrespondstolowest dragposition.
F. FinRemoval
As with fin installation, fin removal requiresthe use of a hydraulic nut in combination with
high‐pressure oil injection into the fin structure.The procedures are detailed in the
Installation Drawing (0575D0127).Before removing fins, you must lock the fin actuator
assembliesincenterposition,andmarkthelocationofthetrailingedgeofeachfinonthehull
toaidinaligningthefinswhenre‐installingthem.
WARNING:
TheFinremoval procedurewill requirethe useof heavylifting equipment,andhigh‐
pressurehydraulichandpumps.Ensurethatalloperatorsareadequatelytrainedand
supervised,andobserveallsafetywarningcontainedin the Fin Installation Drawing
(0575D0127).
this position
Fin
2‐5
Page 29
MAJORCOMPONENTS&INSTALLATION
COOLINGWATERSYSTEM
WARNING:
Inordertomaintainproperstabilizerfunction,andtosafeguardsystemcomponentsfromexcessive
heat,anadequatecustomer/installersuppliedcoolingwatersystemisessentialtokeepthehydraulic
oiloperatingtemperaturebetween120and140degreesFahrenheit(50to60degreesCelsius).
Thecoolingsystemmusthaveadedicatedseawaterpump(orpumps)withaninletseawaterstrainer
(0.065”[1.65mm]max.meshsize)installed belowthewaterlinetomaintainaconstantpumpprime.
Donotdivertcoolingwaterfromthesystemforotherpurposes.
Thepumpandplumbingmustbesuitableforseawater,andcapableofprovidingtheminimumwater
flow required.Minimize bendsin the cooling
thedischarge,orinstallingaflowmeterinthedischargeline.
Refertothehydraulicdiagramforcoolingwaterflowrequirements.
Power packscontainaninternalheat exchanger that is supplied through cooling water ports on the
exteriorof
thecabinet.
ND reservoirshaveanintegratedheatexchanger,butsomesystemsmayalsohaveanexternalpump
casedraincoolerwhichshouldbeconnectedinseries,ratherthanparallel.
The cooling system must be configured to operatewheneverthehydraulic pumps arerunning,even
whentheequipmentis
idle.
Ideally,thedischargeportinthehullshouldbeabovethewaterlineandbelowtheheatexchangers.
All valves in the cooling system should be safety wired in the open position and tagged to warn
personnelagainsttheirclosing.
Coolingpumpsmaybeobtaineddirectlyfrom
water lines. Flow rate must beverified by measuring
ND.Contactarepresentativefordetails.
COOLING WATER
PUMP**
INSTALL BELOW
WATER LINE
COOLING
WATER
INLET
WATERLINE
HYDRAULIC
POWER
PACK
COOLING
WATER
OUTLET
SEAWATER STRAINER*
MAX. MESH SIZE = 0.065 IN. (1.65MM)
*CUSTOMER / INSTALLER SUPPLIED
**ND SUPPLIED UPON REQUEST
MINIMIZE BENDS IN WATER LINES
COOLING
2‐6
WATER
PUMP**
WATER
INTAKE*
NAIAD
RESERVOIR
PROTECTIVE
ANODE
Remove and check
condition of zinc pencil
at least every 30 days.
Replace as necessary
IN
OUT
PUMP CASE
DRAIN
COOLER
IN
OUT
DISCHARGE
SYSTEM WITHOUT POWER PACK
DISCHARGE - VERIFY FLOW
RATE MEETS REQUIREMENTS
Page 30
MAJORCOMPONENTS&INSTALLATION
HOSEINSTALLATIONREQUIREMENT
WARNING:
Hoseselectionandinstallationmustconformtohosemanufacturerrequirementsandallrelevant
industrystandardsincludingSocietyofAutomotiveEngineers(SAE)standardsandclassification
societystandardssuchasAmericanBureauofShipbuilding(ABS).
2‐7
Page 31
MAJORCOMPONENTS&INSTALLATION
INTERCONNECTINGHOSINGANDPIPING
A. General
The installer normally supplies interconnecting hoses and fittings, although they can be
ordered from Naiad Dynamics pre‐crimped and flushed.Use areputable brand name hose
manufacturerinconjunctionwithpermanentlycrimpedfittings.Pressureratingsmustbein
accordancewithAmericanBureauofShipping
Unlessotherwiserevised,ABSSection36.9.14statesthehoseburstpressure rating must be
notlessthanfourtimes(4X)thesystemreliefvalvesetting.
Given the moderate pressure requirements of the stabilizer, it is more conservative and
relativelycosteffectiveto use aburstpressureratingofsixto
failure can produce a highly flammable spray of oil.Therefore, premium quality high
pressure hoses are particularly recommended in the vicinity of any hot surface such as
engines,orotherpossiblesourcesofignitionsuchaselectricalcomponents.
WARNING:andCAUTION:
Hosemustnotcomeincontactwithhot surfaces.
rules:
eighttimes(6X‐8X).Ahose
WARNING:andCAUTION:
Route all hydraulic lines under decking. Avoid routing lines where a failure might allow
pressurizedoiltosprayenginesorotherhotsurfacespotentiallycausingafire.
CAUTION:
Makecertainallhoseshavebeenthoroughlyflushedandarehydraulicallycleanpriorto
finalinstallation.Simplyblowingout thehoseswithcompressedairisnotsatisfactory.Plan
onfinalflushingpriortostartingthestabilizer.
Follow Naiad Diagram HOSE INSTALLATION REQUIREMENTS and all SAFETY WARNINGS &
OPERATING PRECAUTIONS contained in this Handbook and in the Hydraulic Installation
Guidelines.ConsultNaiadBulletinTSB0009for recommendationsonminimizingnoiseinthe
hydraulicsystem.
Consider"hardplumbing”thesystem,usingsteelhydraulictubingandfittings,particularlyfor
new
vesselsunderconstruction.Theprincipaldisadvantageofsteeltubingisthepossibilityof
corrosionif it contacts seawater.Althoughcostly,stainless steel tubing has beenused with
excellentresults.
B. Routing
Selectthebestpathtokeep the hydraulic lines as short aspracticalwiththefewestelbows.
Hydraulic lines
clampstopreventmovementandchafing.Wraplineswithpaddingwheretheypassthrough
holesorarenearsharpedges.
should be neatly bundled together and periodically tied down with padded
2‐8
Page 32
MAJORCOMPONENTS&INSTALLATION
WARNING:
Hoseselectionandinstallation must conform to hosemanufacturerrequirementsand
all relevant industry standards including Society of Automotive Engineers (SAE)
standards and classification society standards such as American Bureau of
Shipbuilding(ABS).
C. PumpInlet(NotApplicableforPowerPacks)
The pump inlet suction hose connection must be airtight to avoid loss of pump prime and
resultingcavitation.Acavitatingpumpwillcreateconsiderableheatandnoise,andcancause
internalpumpdamage.
GENERALELECTRICALINFORMATION
A. SupplyVoltage
TheDATUM™
customer‐supplied7‐Ampcircuitbreaker.Iftheship’ssupplyisdifferent,thenaDC‐DC
convertermayberequiredandcanbepurchasedfromNaiadDynamics.
B. Connections
NAIADDATUMCableBlockDiagramspecifiesboththecustomer‐
suppliedelectricalcables.ElectricalinterconnectionsandterminationsareshownonNAIAD
DATUMElectricalInterconnectionsdrawing.
requiresa+24vdc(±2vdc)supplyvoltageandmustbeprotectedwitha
suppliedandNAIAD–
CAUTION:
Verify all electrical interconnections.System damage may occur if wired incorrectly.
Damageresultingfromincorrectwiringisnotcoveredunderwarranty.
ELECTRICALBONDING
To minimize the possibility of galvanic corrosion (a.k.a. electrolysis), each actuator assembly
must be connected to the ship's bonding system.Although all seawater‐exposed parts of the
actuatorassemblyarecorrosion resistant, electrical bonding isacriticalcorrosioninhibitorand
isarequired step in properinstallation.
improperinstallationandtherebyvoidsNaiad'swarranty.
CAUTION:PRIORTOLAUNCHING!!
The fin actuator assemblies are shipped with the manual centering bolts holding the
torque arms at the center position.These bolts MUST remain in place until after the
vessel has been launched, and the system is ready to be started.Launching thevessel
withoutthefinssecuredincentercancauseseriousdamagetotheequipment.
Disregardingthe electrical bonding stepconstitutesan
2‐9
Page 33
MAJORCOMPONENTS&INSTALLATION
INITIALSTARTING,INSPECTION,ADJUSTMENTS,ANDOPERATIONALTESTSWITHVESSELINTHE
WATER
A. PreliminaryInspection‐Checkthefollowing:
1. Actuatormountingfastenerstorquedtospecifiedvalues.
2. Protectivepackingmaterialaroundhydrauliccylinderrodsremoved.
3. Manualcenteringscrewsfullyretractedandsecuredwithlocknuts.
4. Hydraulichosing
completeandproperlyrouted.
5. Hydraulicaccumulatorsand/ornoisesuppressorsareproperlypre‐charged.
6. Adequateclearancefortail(cap)endofpivotingcylinders.
7. Couplingsorbeltsproperlyinstalledandpumprotatinginproperdirection.
8. Wiringcomplete.Oillevelalarmoperates(checkbeforefillingreservoir).
9. Coolingwater
systeminstalledandoperational.
B. RecommendedHydraulicOil
The hydraulic system requires a premium anti‐wear hydraulic oil, ISO grade 32 or 46,
producedbyareputablemanufacturer.RecommendedbrandsincludeShellTellus,MobilDTE
10and20Series,andTexaco Rando.Whenaddingoiltothe system,ensure
thatitisalways
new oil from a sealed container, pre‐filtered to prevent contaminants from entering the
reservoir.
C. FillingtheSystemandFlushingtheHoses
Acleanhydraulicsystemisabsolutely essential to proper equipment function andlongterm
reliability.Contaminantssuchasdirtandlooseparticlesof
hose/pipematerialcanclogvalves
andother vitalsystemcomponents,and arethemost common causeofhydraulic problems.
Manyshipyardsareoutfittedwithportablefiltrationsystemsdesignedspecificallyforflushing
andfilteringcontaminantsfromhydrauliclines,butthesametaskcanbeperformedusingthe
systemcomponentsasoutlined
below.
1. Ifpreviousrecommendationshavebeenfollowed,allhoseendswillhavebeencleanedin
solvent or oil and flushed thoroughly before installation.After installation, the system
flushingproceduremustbefollowed.
2. Thoroughly wipe clean the breather cap and the surrounding area on the reservoir.
Removethebreather
capandfillthereservoirwithnewhydraulicoil(ISO32or46)froma
sealed container, pre‐filteredusing a portable filter cartor similar filtrationsystem.Be
preparedtoaddsignificantlymoreoilduringtheinitialstartingofthepumps.
2‐10
Page 34
MAJORCOMPONENTS&INSTALLATION
3. Atthepump(orpumps)loosenthesuctionlinefittingandallowtheairtoescapeuntiloil
begins to emerge. Reconnect the fitting tightly.Leaks in the suction line will cause
cavitation,whichresultsinexcessheat,noise,andpumpwear.Notapplicableforpower
packs.
4. Forpressure
linefitting fromthepump, andfillthe pumpwithclean oilbeforere‐connectingthe line.
Inordertoensurethepumpalwaysoperateswiththecasefullofoil,youmustconnect
the case drain line
powerpacks.
5. Afterrepeatingtheprocessforallsystempumps,checkthelevelinthereservoirandrefill
asrequired.
6. Ateachofthefinactuatorassemblies,taganddisconnectthelines
from the “P” and
themtogether using aunionfitting.The purpose is to isolatethe
finactuatorsfromthesystemwhileallowingoiltofreelycirculate.
Marking the lines with identification tags will eliminate errors
whenreconnectingthesystem.
7. Ifthere are any
windlasses, cranes, etc.) or control valves, theseshould also be taggedand bypassed in
thesamemanner.
8. Donot bypass any pressurefilters, header (junction) manifolds, heat exchangers, check
valves,ballvalves,etc.thatmaybepresentinthesystem.
9. When all hydraulically driven equipment has been bypassed, you are ready to begin
purgingthesystem.Bepreparedtostopthepumporpowerpackfrequentlytoreplenish
thereservoirastheairispurgedfromthelines.Formultiplepumpsystems,youshould
start with only one pump.
operational.
10. Startthe pump ata low idle speed (if possible), keeping a close watchon the reservoir
level.Stopthepump/powerpackandreplenishthereservoirasmanytimesasnecessary.
DONOTallowthepumptorundry,
CAUTION:
NEVERallowahydraulicpumptorundryatanytime.Withoutthecontinuous lubricationof
thehydraulicfluid,thepumpwillbecomeseverelydamagedandcancontaminatetheentire
system,causingdamagetoothersystemcomponents.
compensatedandloadsensingpumps,youmustalsoremovethecasedrain
to the uppermost case drain port on the pump. Not applicable for
“T” ports on the servo manifold, and connect
UnionFitting
otherhydraulically driven pieces ofequipment(i.e., thrusters, capstans,
Ensure that the cooling water system is installed and
asseriousdamagewillresult.
11. Oncethe oil level is stable, you maystartthesecondarypump(if applicable) and repeat
theprocessofreplenishingthereservoiruntiltheoillevelstabilizes.
12. Whenallthe pumpsare runningandtheoillevelisholdingsteady,youmayincreasethe
rpmofthe
pump(s).Enginedrivenpumpsshouldberunuptothenormalcruisingrpmof
thevessel.Checkforleaksthroughoutthesystem,andcloselymonitorthereservoirlevel.
2‐11
Page 35
MAJORCOMPONENTS&INSTALLATION
13. Runthesystemforabout30minutes,occasionallyincreasingenginerpmtotopspeedfor
shortintervals.
14. Whentheflushingprocess iscomplete,re‐connectallhoses andmake surethereservoir
isfilled.Beawarethatduringtheinitialoperationoftheequipment,smallamountsofair
willcontinuetobepurgedfromthesystem,sotheoillevelshouldbecarefullymonitored
duringthistime.
15. Check all filters in the system, and replace filter elements as necessary.Refer to the
Maintenancesectionfordetailsoncheckingandreplacingsystemfilters.
2‐12
Page 36
OPERATINGPRECAUTIONS
IMPORTANT
Steerageway must be maintained at all times the Stabilizer System is set to any
underway “fins operational” mode (AtSpeed® or ADAPTIVE).Stabilizer Fins must be
centeredifsteeragewaycannotbemaintained.
ReversewaterflowoverthefinswiththeStabilizerSystemsettoany“finsoperational”
mode(notcentered)can
When attempting to make headway, never allow the water speed under the hull to
match or overtake the hull speed, even momentarily, such as may occur in a heavy
following sea.This dangerous situation must be carefully avoided to prevent loss of
steeringandstabilizercontrolandpossiblevesselbroaching.
When the potential for this condition exists, if the heading cannot be changed to
alleviatetherisk,immediatelycentertheStabilizerFins.
CAUTION:
TheStabilizerFinsmustbecenteredatalltimeswhilemaneuveringormakingsternway
(motoring astern or backing down).Serious damage to the Stabilizer Fins and Fin
ActuatorscanoccuriftheFinsarenotcenteredpriortomotoringastern.
TheStabilizerFinsmustbecenteredatalltimeswhen
unless the System is equipped with the Stabilization AtRest® option and the System is
setintheAtRestmode.
CAUTION:
WhenunderwaywiththeStabilizerSystemnotinuse,theFinsmustbecentered.Never
operate the vessel underway with the Stabilizer System OFF unless the fin actuator
assembliesaresecuredin the center position with the locking pins.Serious damage to
the Stabilizer Fins and Fin Actuators can occur
hydraulicallyprotected.
TheStabilizerSystemmustneverbesubjectedtotheextraordinaryforcesthatwilloccur
if the fins impactthe surface of thewater.TheCaptain must take whatever measures
are necessary to prevent the fins from breaking the surface of the water,
damagemayoccur.
WARNING
Fins are balanced anddo notnecessarily trail at 0
vessel underway with the Stabilizer System OFF unless the fin actuator assemblies are
secured in thecenter position with the locking pins, since unpredictable finand vessel
motionscanresult.
WARNING:
:
causetheStabilizerSystemtoINDUCEvesselroll.
underwaywithnowayon(adrift),
if the Fins are not mechanically or
o
angle of attack. Never operate the
or serious
3‐1
Page 37
OPERATINGPRECAUTIONS
CHECKBEFOREDEPARTURE
A. Prior to starting a newly installed system, ensure that the hydraulic system has been thoroughly
flushed.
B. Checkthehydraulicfluidlevelinthereservoir.AddISO32or46Gradehydraulicoilasrequired.
C. Inspecthydraulicsystemforleaks.
D. Inspect the fin actuator
Checkthistorquefrequentlyforthefirstfewweeksafterinstallation.
FiberglassHulls‐680ft‐lbs(915N‐m)
E. Ensurethattheseawatercoolingsystemisoperational.
WARNING:andCAUTION:
ADDITIONALOPERATIONALPRECAUTIONS
A. Never operate the stabilizer system if any aspect of these guidelines is unclear, contact
NAIADcustomerservice.
B. Never continue to operate the system if the system appears to be responding
inappropriatelyto seaconditions.Thismay potentiallybecaused byasystemmalfunction
orunusualseaconditions,suchaswhenthespeedofthewaterunderthehullin afollowing
seaexceedsthespeedofthevessel.
C. NeverallowthesystemtobeOFFwiththeactuatorsunlockedwhilethevesselisunderway
since the fins will not be hydraulically or mechanically “protected” potentially causing
seriousdamage.
D. Alwaysverifythatthefinsarecenteredbeforemovingasternormaneuveringthevessel.
E. Never operate the fins dockside without first ensuringunobstructed full fintravel in each
rotationaldirection.
F. Neverperformaforcedrolltestunlessspeciallytrained andqualifiedtodoso,andunlessall
parties onboard have been warnedof the likely affect and special precautionshave been
taken.
assembly to ensure all mounting bolts are torqued to their proper values.
MountingBoltTorque
MetalHulls‐400ft‐lbs(540N‐m)
3‐2
Page 38
MAINTENANCE
GENERAL
A. Warranty
TheNAIAD®stabilizersystemisdesignedtofunctionformanyyearswithminimalattention.
Aswithany new precisionequipment, malfunctions sometimesappearduringthe firstfew
weeks of operation.Generally these relate to oil leaks, system contamination,or control
systemcalibration.NaiadDynamics®anditsinstallers
without charge except for travel expenses to and from the boat if it has departed the
installationarea.
Ingeneral, all parts are warranted to operate satisfactorilyin accordancewith theLimited
Warranty.
B. Service
Owner, crew, or local mechanic may perform routine maintenance.Service
however, should be referred to the nearest Naiad Dynamics representative or the Naiad
Dynamics factory for consultation.Within the warranty period, refer maintenance and
servicequestionstotheequipmentinstaller.
AtNaiad Dynamics, everyattempthas been madetoproduceanexceptionally high quality
system.Ouroverridingphilosophyis
theachievementofcustomersatisfaction.Allfeedback
fromusersofNAIADstabilizationsystemsisencouragedandwelcome.
LOCKINGTHEFINACTUATORASSEMBLY
Before performing maintenance on or near the fin actuator assembly, the fins must be
centered and locked, and the system shutdown.With the systemon, press
command to move the fins to the center position.Loosen the locking nuts on the two
centeringbolts,andtightenthemuntiltheyjustmakecontactwiththet orque arm.
To manually center the fins, the
hydraulic system must be shut down,
and the bypass valve on the
servo
manifold must be opened.The bypass
valve is located in the port marked
“NFCC”, and has a plastic knob with a
locking ring at the base.Loosen the
lockingring,andloosentheknobfullyto
openthevalve.Nowthetorquearmcan
be moved to center by using
the
centeringbolts.
CAUTION:
Before operating the system, make certain the centering bolts are FULLY retracted and
lockedinposition,thebypassvalvesareFULLYclosedandsecuredwiththelockingring to
preventmalfunctioningordamagedequipment.
willnormallycorrectinitialproblems,
problems,
the CENTER
4‐1
Page 39
MAINTENANCE
MAINTENANCE
The NAIAD® Stabilizer is designed to require verylittle maintenance.Nevertheless, it is wise to
followaroutinescheduletohelpavoidthedevelopmentofproblemsinthefuture.
PreventiveMaintenanceOverview
EachUse CheckOilLevel
Weekly
HydraulicVisual
Inspection
CheckHeat
Monthly
ExchangerZinc
Anodes
GreaseRodEnd
6Months
andTrunnion
RollerBearings
Yearly CheckBonding
Check
Accumulator
and/orNoise
SuppressorPre‐
Charge
CheckCooling
WaterSupply
CheckElectric
Motorand
VFDAir
Circulation
Check
MountingBolt
Torque
CheckOilFilter
Indicators
ReplacePower
2Years
PackReturn
Filters
CheckwithND
forSoftware
Updates
3Years
5Years
ReplaceLower
Seals
Hose
Replacement
CheckFinZinc
Anodes*
Replace
Accumulator
and/orNoise
Suppressor
Bladders
Test/Change
ReservoirOil
Replace
ElectricMotor
Coupling
Inserts
Pleasealsoconsultanysupplemental documentationsuppliedwithexternallymanufacturedsubc omponents
forinspectionandmaintenance recommendations.
*Zincanodesnotinstalledonallfins.
EACHUSEOilLevel
Maintaintheproperreservoiroillevelatalltimes.Useapremium,anti‐wear
hydraulic oil, ISO grade 32 or 46,
from a reputable manufacturer.
Recommended brands includeShell Tellus, Mobil DTE 10and 20Series, and
Texaco Rando.When adding oil, always ensure it is new oil from a sealed
container,pre‐filteredandpouredthroughacleanfunnel.
4‐2
Page 40
MAINTENANCE
WEEKLYHydraulicSystemIn spection
Check around pumps, reservoir assembly/power pack and filters for oil
leakage.Inspectallinterconnecting lines forleaks,swelling,fraying or strain.
Onthefinactuatorassemblies,checktheservovalves, manifolds, hoses,and
cylinderrodsforleaks.
MONTHLYHeatExchangerZincAnodes
Dependingonthe
system,heatexchangers
willbelocatedonthe
reservoir,and/orinthe
casedrainline.Hydraulic
powerpackscontaina
tandemheatexchanger
(shown)withtwozinc
anodeslocatedbehind
thefrontpanel.Each
heatexchangercontains
asacrificialzincanode
thatpreventsinternal
corrosionfromthe
seawatercirculated
throughthem.
deteriorationisobserved.
6MONTHSCylinderRodEndandTrunnionBearingLubrication
Usingagreasegun,addthreetofourstrokesofEPlithiumbearinggrease(see
rear of this manual for spec sheet) to the fittings that supply the
trunnion,and rod end bearings with grease.Atotal of six fittings (three on
eachside)mustbelubricatedoneachfinactuatorassembly.
Allanodesshouldbecheckedmonthlyandreplacedwhen
cylinder
4‐3
Page 41
MAINTENANCE
NOTE: The mainshaft bearings in the fin actuator housing are packed full of
Lubriplate Multi‐lube A waterproof grease. In new systems, repeated
temperature changes sometimes cause a quantity of grease to be forced up
outof the actuator housing.This is nocause forconcern and may merely be
wipedaway.After a few months ofservicethis venting of excess grease will
subside.A return of this ventingof grease many monthsor years later may
indicate water intrusion through the lower seals which must be promptly
corrected.
6MONTHSHydraulicAccumulator/NoiseSuppressorCharging
Many systems are equipped with accumulators at each actuator,and many
have noise suppressors on
pressureforthesedevicesshouldbecheckedeverysixmonthsandre‐filledif
necessary.Accumulatorsarechargedtotwothirdssystempressureandnoise
suppressorstoonehalf.Refertotheprocedureslat er inthismanual.
6MONTHSElectricMotorand
VariableFrequencyDriveAirCi rcul atio n
Theelectricmotorsand VFD’s/motor startersmustbe keptcleanandfree of
obstructions to maintain proper aircirculation necessaryforcooling.Inspect
and clean all vents and housings, and verify the proper operation of any
coolingfans.
YEARLYBonding
Checkthefinactuator
attachedtotheship'selectricalbondingsystem.Severeactuatorcorrosionis
mostlikelyasignthatthereisabreaksomewhereintheelectricalconnection.
YEARLYCoolingWaterSupply
Verify that the system is reliably receiving the required amount
water under all operatingconditions, and that the hydraulic oil temperature
remainswithintherecommendedoperatinglimits,typicallybetween120and
140degreesF(49to60degreesCelsius).Waterpumpsandse awate r strainers
shouldbe cleanedandserviced regularly tomaintain efficiencyandspecified
flowrate.
YEARLY
FinActuatorMountingBoltT orque
Checkthetorqueontheeightmountingboltstoensuretheyaretightenedto
thevaluesspecifiedintheinstallationdrawings.
MountingBoltTorque
MetalHulls‐400ft‐lbs(540N‐m)
FiberglassHulls‐680ft‐lbs(915N‐m)
or near the pump(s).The nitrogen pre‐charge
assembliesat leastyearlytobesuretheyareproperly
of cooling
4‐4
Page 42
MAINTENANCE
YEARLYOilFilters
WiththeDATUM™controlsettoCENTER,oranactivestabilizingmode,check
the indicator on the reservoir mounted suction filter and/or the pressure
filter(s).Pressure filters are also commonly located in the lines supplying
control valves and accumulators.(Power packs only have return filters and
shouldbechangedeverytwoyears)Ifitisapproachingtheredarea,replace
the filter element. One spare element is furnished for each filter, and
additionalelementsmaybeobtainedfromNaiad.Somefiltershaveelectronic
alarmsthatsignalwhenthefilterneedstobechangedratherthanindicators.
In
these cases, the filters can be changed at three‐year intervals to avoid a
filteralarm.Refertothehydraulicdiagramforreplacementfilterelementpart
numbers.
ChangingSuctionFilters:Shutdownthesystem,andclosethefilter
checkvalvebyturningthecentershankscrewontheundersideofthe
filterassemblyfullycounter‐clockwise.Placeabucketunderthefilterto
catchtheoilremaininginthehousing,andremovethescrewsmounting
thebottomcovertoaccessthefilterelement.Makesuretoopenthe
check
valveafterreplacingthefilterelementandcover.
ChangingPressureFilters:Shutdownthesystem,andplaceabucket
underthefiltertocatchtheoilremaininginthehousing.Toaccessthe
element,removetheelementhousing(orhousingcapforbottomported
filters)usingawrenchonthehexnut.
VISUAL DIRT
INDICATOR
HEAT EXCHANGER
SUCTION FILTER
PRESSURE
FILTER
ZINC ANODE
(OPPOSITE SIDE)
SYSTEM FILTER
SEE INSTRUCTION
MANUAL FOR
REPLACEMENT
ELEMENT
BOTTOM COVER SCREWS
SHUT OFF VALVE
Non‐PowerPackHydraulicReservoirIllustration
LOOSEN HEX &
LOWER HOUSING
4‐5
Page 43
MAINTENANCE
2YEARSPowerPack ReturnFilters
Powerpack filtersare locatedbehind thefront panel butdo not have adirt
indicator.Thesefiltersshouldbechangedeverytwoyears.
ChangingPowerPackFilters:Shutdownthesystem,andopenthefront
3YEARSLowerSeals(N ai ad ‐trainedservicetechnicianrequired)
panel.Closetheballvalveonthelineexitingthefilter(s)andplacea
bucketunderthefilter(s)tocatchanyoilremaininginthelines.To
removeandreplacethefilter,useastrapwrencharoundthe
filter
canister.Remembertoopentheballvalvebeforereplacingfrontpanel.
Replacelowershaft
sealswithin the notedintervalor atanyconvenienttime
the vessel is hauled out of the water.Shorten the noted interval if the
stabilizersystemisnotoperatedregularly(atleasttwicepermonth).
Allthreelowersealsfaceoutboardprovidingatriplewaterseal.Naiadlower
sealsare
speciallydesigned to bebi‐directionalupto500psi.Whenproperly
installed,Naiad lowersealseffectivelyandreliablysealseawateroutside,and
thegreaseinside,thefinactuatorassembly.
Inordertoaccessthelowerseals,thefinsmustberemoved.Locktheactuat or
assemblies at center position, and mark
the location of the trailing edge of
eachfin on thehullto aidinalignmentwhen replacing thefins.See the Fin
Installationdrawingforfinremovalprocedures.
1. Thelowersealsarehousedinareplaceablecartridgemadeofblackdelrin
(plastic).Remove the eight socket head cap
screws mounting the
cartridge.Locate the four set screw plugs in the threaded holes in the
cartridge,and tighten each of them two full turns before loosening and
removingthem.
2. Threadfourofthemounting screwsintothe threaded holes, andtighten
themevenlytounseatthecartridge from
theactuatorassembly.
4‐6
Page 44
MAINTENANCE
3. When the old cartridge is removed, the shaft and cavity in the lower
bearing retainer must be thoroughly cleaned to remove all traces of
debris.Donotusemetaltoolsthatmaysc ratch thesesurfaces.
(SECTION VIEW)
SOCKET HEAD
SCREW (QTY. 8)
CAUTION:
NEVER use any replacement seals other than genuine Naiad seals.Naiad seals have been
speciallydesignedforthisparticularsealingapplication.
Note:Withthesealcartridgeremoved,thelowerbearingswillbevisible,
andtheyshouldbeinspectedtoensuretheyareproperlypackedwith
grease,andshownoevidenceofseawaterintrusion.Ifnecessary,a
greasegunwithalongnozzlecanbeinsertedbetweenthelowerbearing
rollerstoinject
untilitisforcedoutfromthelowerbearings.
LubriplateMulti‐lubeAgreaseintotheupperbearings
4. Locatethenewcartridgeassembly,andapplyathincoat
ofgreasetothe
inside surface of the three seals.Makecertain all three o‐ringson the
cartridge are properly seated, and carefully install the new cartridge
aligning its mounting holes with the mating holes in the lower bearing
retainer.
CLEAN
SURFACES
THOROUGHLY
LOWER SEALS
(QTY. 3)
COAT INNER
SURFACE WITH
GREASE
FIN SHAFT
SEAL CARTRIDGE
(SECTION VIEW)
O-RINGS
SET SCREW PLUG
(QTY. 4)
5. Apply3M 4200 Marine Adhesive Sealant to the threads, and under the
headsoftheeightmountingscrewsbeforeinstallingthem.Tightenthem
evenlyuntilthesealcartridgeisfullyseated, then t orquethem to17ft‐lbs.
(23N‐m).
LOWER BEARING
RETAINER
(SECTION VIEW)
WEDGE RING /
CHOCKFAST
RETAINER
(SECTION VIEW)
4‐7
Page 45
MAINTENANCE
3YEARSFinZincAnodes
The fin zinc anodes should be replaced every three years or sooner if
corrosionisobservedonthefinnutaccessdoors,and/orthedoormounting
screws.Theanodesaremountedtotheinsideofbothaccessdoorsoneach
fin, so replacement can
replacement.Note:Zincsnotinstalledonallfins.
3YEARSTest/ChangeReservoirOil
Afterthreeyears,takeasampleoftheoilfromthereservoirandhaveittested
bya professionalfacilityspecializing in hydraulicfluidtesting. Analysisofthe
cleanliness,
viscosity, water content and other parameters will enable the
laboratorytoproviderecommendationsregardingwhentheoilwillneedtobe
changed.If testingis not available,it isrecommended tochange theoil and
filterseverythreeyears.
3YEARSCheckforSoftwareUpdates
Naiad recommends periodically
ContactNaiad’sServiceDepartmentfordetails.
5YEARSHoseReplacement
All interconnecting hydraulic hosing should be replaced every five years to
prevent a sudden failure that can potentially cause a fire.Replacement fin
actuator hoses can be ordered from Naiad cut to length with pre‐
fittings.
CAUTION:
Replacementhose mustbe thoroughly cleanedwithsolvent andflushedbefore connectionto
the stabilizer hydraulic system.Simply blowing out the hoses with compressed air is not
satisfactory.Performcompletesystemflushingpriortooperatingtheequipment.
Naiad recommends high‐pressure hydraulic hoses from a reputable manufacturer in conjunction
with
permanentlycrimpedfittings.InaccordancewithA.B.S.rules,Section36.9.14(unlessrevised
since this printing), burst pressure must not be less than four times (4x) the system relief valve
setting.Given the moderate pressure requirementsof the stabilizer, it is moreconservativeand
relativelycosteffectivetouseaNaiad
recommendedburstpressureratingofsixtoeighttimes(6X‐
8X).Ahose failurecanproduceahighlyflammablesprayofoil.Therefore,premiumqualityhigh
pressurehoses are particularly recommended in thevicinity ofanyhotsurfacesuchasengines,or
otherpossiblesourcesofignitionsuchaselectrical
WARNING:
Hose selection and installation must conform with hose manufacturer requirements and all
relevantindustrystandards includingSocietyof Automotive Engineers(SAE)AmericanBureau
ofShipbuilding(ABS)
be scheduled to coincide with lower seal
checking for available software updates.
crimped
components.
4‐8
Page 46
MAINTENANCE
WARNING:
Hosemustnotcomeincontactwithhotsurfaces.
WARNING:
All hydraulic lines should be routed under decking whenever possible. Avoid routing lines
wherea failure might allow pressurized hydraulic fluid, vapor or mist tosprayengines, other
hotsurfaces,orelectricalcomponentscausin gfire.
Hydraulichose must not be routed nearhightemperature equipment orallowedtochafeagainst
sharp edges.Avoid sharp bends in all hydraulic lines.See the HOSE INSTALLATION
REQUIREMENTS located in Section II of this Handbook, and Naiad bulletin TSB0009 for more
informationonproperandeffectivehydraulicplumbing.
Select the best path to keepthe hydraulic lines as short as practical.Hydraulic lines should
neatlybundledtogetherand periodically securedwith paddedclamps to preventmovement and
chafing.Wraplineswithpaddingwheretheypassthroughholesorarenearsharpedges.
5YEARSAccumulatorand/orNoiseSuppressorBladderReplacement
The internal bladders of accumulators and noise suppressors should be
replaced every
bladders can be obtained from Naiad, and they will include replacement
procedures.
5YEARSElectricMotorCouplingInserts
Electricmotorcouplingsshouldbeinspected,andtheinsertsreplacedevery
fiveyears.Thiswillrequirethepowerpackmotor(s)
the mounting studs and hoisted up to access the coupling(s). If the steel
coupling halves show damage or wear, they should be replaced as well.
ContactNaiadforreplacementpartnumbers.
five years to avoid rupture due to fatigue.Replacement
tobeunfastenedfrom
be
4‐9
Page 47
MAINTENANCE
SPAREPARTS
Thefollowinglistscontainsparepartsandtoolsthatcanbecarriedonboardtomaketypicalrepairs.Please
bearinmindthattheselistsdonotincludesparehydraulicparts,suchasfilterelements,zincanodes,etc.
due to the custom nature of the hydraulic systems.Refer
component drawings and data sheets, or consult your Naiad representative for a complete list of
recommendedhydraulicsparepartsforyoursystem.
PartNumbers‐CommonSpareParts
CylinderRodSeals 0620S0211
TrunnionBearings 0703U0097/98
Potentiometer 7100E0166
CylinderHoses1Each
TorqueArmPin 0720A0020
RodEndAssy. 0620A0023
LowerShaftSealCartridge 0575K0030
FinZincAnodes 9000U1910
Mostcommonsparescanbecarriedon‐board,butlowershaftsealsmaylose
elasticityafteryearsinst orage,sowerecommendtheybeorderedasneeded.
PartNumbers–OptionalSpareParts
HydraulicCylinder 0620H0037
ServoValve 0620H0018
Thesehighervalueitemsareavailableforextendedvoyages.
PartNumbers–ServiceTools
TorqueArmPinPuller 0620T0220
CylinderGland&SpannerWrenchKit 0620T0208
RodEndNutWrench 0620T0152
FinInstallation/RemovalKit 0575K0111
AccumulatorChargeKit 8400H0057
Pleasenotethatthefini nstallationkitmayhavebeensuppliedwiththeequipment.
to the hydraulic diagram and the hydraulic
0575H0020‐A
0575H0020‐B
0575H0021‐A
0575H0021‐B
4‐10
Page 48
Number: NB0105
Date: July27,2006
Revision: K
NaiadBulletinNB0105
Title: FinLocationGuide
Thelocation ofthefins/fin actuatorassembliesis oneofthe mostvitalfactors totheperformanceofthe
stabilizer system.The following provides general information to consider when choosing the location,
basedontheexperiencesofthousandsofsuccessfulinstallations.Ifyouhavenotalreadydoneso,please
review
thefinactuatorassemblyinstallationdrawings.Thesedrawingscontainspecificdetails pertaining
to the stabilizer model and hull material of the vessel, and are referred to throughout this bulletin.
ContactNaiad’sEngineeringDepartmenttoreceiveanextracopyofthesedrawingsifnecessary.Itisvery
important that the installer
understands what is required to make a structurally sound and safe
installation,aswellastherequiredspaceandclearancesinsideandoutsidethevessel.
Naiad’sEngineeringDepartmentisalwaysavailableforconsultation,andwillbepleasedtoreview
installationplansoransweranyquestions.AnydrawingsorinformationsharedwithNaiadwillbe
keptinstrictconfidence.
1. Hull structure members such as frames and stringers are necessary for fabricating an effective
reinforcementfor the fin actuatorassembly (refer to the fin actuator assembly installationdrawing).
Anideallocationwillhavestructuralmemberswithwhichtoincorporatethehullreinforcement.Note:
Structuralmembersshouldneverbereducedor
modifiedunlessapprovedbyanavalarchitect,sothis
shouldbeconsideredwhenchoosingthefinlocations.
2. The fin actuator assemblies require adequate space to facilitate the hydraulic and/or electrical
connections as well as future maintenance and repair work, including manual fin centering.The fin
actuatorinstallationdrawingsinclude
therecommendedspacerequirementsfor eachmodel.Keepin
mindthatallNaiadfinactuatormodelscanbeinstalledinanyradialorientation.
3. Do not locate fins close to, or inline with the propeller or jet intake flow field to avoid propeller
cavitationandresultingshaftvib rati on.
4. Do not
locate the fins in close proximity to underwater exhausts, intakes, or other underwater
appendages.
5. Donotlocatethefinstooclosetothewaterlinetoavoideffectsofthesurface,suddenlossof lift,and
possiblecavitationandairentrainment re su ltinginnoiseorvibration.Thestabilizersystemmust
besubjectedtotheextraordinaryforcesthatwilloccurifthefinsimpactthesurfaceofthewater.The
finsmustbepositionedtominimizethepossibilityofthe finsbreaking thesurfaceofthe wateratany
time,orseriousdamagemayresult.
never
6. Longitudinally,the optimal locationfor
thefinsisjustforwardofwaterlineamidships (seeillustration
on the following page). Specifically, within 10% of the total waterline length forward of waterline
amidships.If this is not possible, a location within the middle fifth of the waterline length is also
extremely effective.If the vessel has a
cruising speed of over 20 knots, the middle fifth location is
requiredforproperoperation.
7. Ifitisnotpossibletoinstallthefinswithinthemiddlefifthofthewaterlinelength,themiddlethird of
thewaterlinelengthisanacceptablelocationon mostvesselswithacruisingspeed
ofunder20knots.
Ifthemiddlethirdisnotpossible,pleaseconsultNaiadforasolution.
1of3
Page 49
Number: NB0105
Date: July27,2006
Revision: K
C
L
MIDDLE
1/5
TYPICAL LOCATION
(REQUIRED FOR VESSELS
WITH CRUISING SPEEDS OF
20 KNOTS AND ABOVE)
FORWARD OF AMIDSHIPS)
OPTIMAL LOCATION
(WITHIN 1/10 OF
WATERLINE LENGTH
TRAILING FIN
EDGE MAX.
1/3
MIDDLE 1/3
ACCEPTABLE LOCATION
(FOR VESSELS WITH
CRUISING SPEEDS UNDER
20 KNOTS)
LEADING FIN
EDGE MAX.
1/3
8. Do not install fins farther forward than the guidelines above.Fins located too far forward of the
vessel’spitchaxiswillbesub jectedtoexcessiveforceswhenpitchinginheavyse a s.
9. Finextremitiesshouldnotextendbelowthekeelorfurtheroutboardofthebeamatthewaterline
(the
“blocksection”,or"hullenvelope")toavoidpossibledamagetothefins,actuator,orhull.Customfins
withreducedoutreachmay beproduced byNaiaduponrequest.Alternatively, afour‐finsystemwith
smallersizefinsmaybeconsidered.
10. Position the fins in a transverse section of the hull
so that the fin lift force is as far away from the
vessel’s roll axis as possible, since this will produce the longest lever arm and the highest system
efficiency.Formosthullsthispositionisasfaroutboardaspossiblewhileobservingotherprecautions
notedinthissection.
11.
The most efficient angular
ROLL AXIS
orientationofthefinsissuch
that the plane of the fin
shaft intersects the roll axis
of the vessel.A hull with
eitheraveryhardchineora
low deadrise will cause the
fins to be mounted near
vertical. The fins become
less efficient as
the fin
mounting angle approaches
LOCATE FINS AS FAR
OUTBOARD AS POSSIBLE
WHILE KEEPING THEM INSIDE
THE HULL ENVELOPE
HULL ENVELOPE /
BLOCK SECTION
AVOID PROPELLER
FLOW FIELD
vertical.Considercantingthefinactuatorassembliesoutboardforimprovedfineffectiveness.Canting
the fin actuators may involve added expense since the fin actuator housing body may need to be
elongatedand/orthefinsshaped(modified)toavoidinterferencewiththehull.
2of3
Page 50
Number: NB0105
Date: July27,2006
Revision: K
NOTESONBILGEKEE LS
Bilgekeels assist roll damping,but inorder to minimize anynegative effectsdue to water disturbance, the
followingrecommendationsshouldbefollowed.Theclearancebetweenstabilizerfinsandbilgekeelsshould
beonefinrootchordlengthfromtheleadingedgeofthefintothe
trailingedgeoftheforwardbilgek eel, and
twofinrootchordlengthsfromthetrailingedgeofthefintotheleadingedgeoftheaftbilgekeel.(Theroot
chordlengthofthefinis thelongestdimensionmeasuredbetween theleadingedgeandtrailing edgeofthe
fin,andisthesidemountedclosetothehull.)Theserecommendedclearancescanbeminimizedifnecessary
byusingthechordlengthmeasuredatthesamedistancefromthehu llasthemaximumbilgekeeloutreach.
RECOMMENDED BILGE KEEL CLEARANCE
BILGE KEEL
MAXIMUM OUTREACH OF BILGE KEEL = B
2A
ROOT CHORD LENGTH = A
A
MINIMUM BILGE KEEL CLEARANCE
2C
CHORD LENGTH AT DIM. B FROM HULL = C
C
3of3
Page 51
Number: TSB0004
Date: May18,2005
Revision: D
TechnicalServiceBulletin
Title: BladderAccumulatorPre‐Charging,Maintenance&RemovalInstructions
!
WARNING!
ITISEXTREMELYIMPORTANTTHATTHEACCUMULATORSAREPROPERLYINSTALLEDANDPRE‐CHARGED
PRIORTOSYSTEMOPERATION.FAILURETODOSOCANRESULTINUNPREDICTABLEFINMOVEMENT
WHICHCANPRODUCESUDDENANDEXTREMEROLLINGMOTIONSWHILEUNDERWAY.THESEMOTIONS
CANCAUSESEVEREINJURYORDEATH,ANDDAMAGETOTHEVESSEL
Thefollowingprocedureshavebeencompiledontheassumptionthatallpersonnelfollowingthemwillhave
received adequate technical training.Such persons are, therefore, deemed to be competent to act at all
times with due regard for the safety of themselves, the safety of other personnel
employatalltimessoundengineeringpractices.
In order to operate properly, bladder accumulators must
be installed in an upright position. Choose a mounting
location as close to the fin actuator assembly as possible
thatwillpermitanuprightinstallation.
ANDITSCONTENTS.
and equipment, and to
Use only
bladderaccumulators.Donot
It is required that an appropriate charging and gauging
assembly rated for a minimum of3,000 psi beused.The
assembly shown in Figure1
as a complete kit.If equipment other than that supplied
by Naiad is used, make certain that it is compatible with
the gas valve assemblies on the accumulator and the
sourcenitrogen tank. Itisstrongly recommendedthatthe
source nitrogen tank have the appropriate
regulatorvalve(notincluded).
Pre‐ChargingTheAccumulator
(RefertoFigure2)
A. Makesurethenitrogensupplyisshutoff.
B. Attach the hose from the charging and gauging
assemblytothesourcenitrogenbottle.
C. Removetheprotective gasvalvecap onthetopof the
accumulator.
D. Turn the handle on the “T” valve all
(counterclockwise) before attaching the charging
assemblytotheaccumulator.
an inert gas such as nitrogen for pre‐charging
useoxygenorshopair.
can be purchased from Naiad
high‐pressure
the way out
Figure1‐ChargingandGaugingAssembly
“
”
Gas valve
Figure2
Charging hose
E. Closethebleedvalve.
F. Making sure not to loop or twist the charging hose
during installation.Attach the swivel nut on the
charginghosetothegasvalveandtighten(Torque:10‐
15in.lb.[11.5‐17
cmkg]).
Bleed
Valve
1 of2
Page 52
Number: TSB0004
Date: May18,2005
Revision: D
G. Turn the handleon the “T” valve until the gauge startsshowing the pressure inthe accumulator. Do not
turnthe“T”handleallthewaydown(clockwise),asitwilldamagethevalvestemontheaccumulator.
H. Slowly,openthesourcenitrogentankorregulatorvalveandfill
CAUTION
Stop filling the accumulator when the gauge indicates 100 psi above the desired pre‐charge pressure.
Whentheaccumulatorisusedtosupplementpumpflow,auxiliarypowersupplyorleakage compensation,
Naiadgenerallyrecommendsa
hydraulicdiagramfortheexactpre‐chargepressure.
I. Let the pre‐chargesetfor10to 15 minutes. This will allow the gas temperature to stabilize. If the desired
pre‐chargepressure isexceeded,close thevalve
valve until the recommended pre‐charge pressure is attained. Do not attempt to reduce the pre‐charge
pressure by depressing the valve stem on the accumulator with a foreign object as high pressure may
rupturetherubbervalveseat.
J. When
thevalve.
K. Hold the valve stem on the accumulator to keep it from turning.Loosen the swivel nut on the charging
hoseandremovethehosefromtheassembly.
L. Checkforanyleaks
M. Replacetheprotectivegasvalvecap(Torque:10‐15in.lbs.[11.5‐17cmkg]).
N. Afterthe original installation, the pre‐charge pressure on the accumulator should be checked once during
thefirstweektoseethatnoleakshavedeveloped.If gasleakageis
andrechargetorecommendedpre‐chargepressure.
:Ifthepre‐chargeisnotdoneslowly,theinternalbladdermaysufferpermanentdamage.
pre‐chargeofapproximately66%ofminimumsystempressure.Refertothe
onthe sourcenitrogen tank.Then slowlyopenthe bleed
finishedprechargingtheaccumulator,turnthe“T”handleallthewayout(counterclockwise)toclose
usingacommonleakreactant.
theaccumulator.
present,re‐tightenallthe connections
Maintenance
Thepre‐chargepressureontheaccumulatorshouldbeverifiedatleasteverysixmonths.
Ifgasleakageis present,re‐tightenall theconnectionsand rechargetorecommended pre‐chargepressure.
Ifthereisno gasinthe bladder andfluid appears atthe gasvalve,the unit mustbe removedandreplaced.
RemovalOfAccumulatorFromHydraulicSystem
Toremovetheaccumulatorfromthehydraulicsystem:
A. Shut offall equipment andmakecertainthat the hydraulic pressure at the accumulator is at zero.If not,
B. Detachthegaugingassemblyfromtheaccumulator.
C. Removethe
Ifleakagecontinues,removetheaccumulatorfromthesystemandcontactNaiadforareplacement.
ContactNaiadforreplacement.
openthebleedvalvetoreleasealltheremaininggaspressure.
accumulatorfromthesystem.
2 of2
Page 53
Number: TSB0009
Date: June,2006
Revision: B
TechnicalServiceBulletin
Title: HydraulicNoisePrevention
A common problem in hydraulic systems is noise, and itcan be a particular problem onmarine vessels.
Thefollowingbulletinoffersaguideforreducingnoiseinthehydraulicsystem.
Cavitation/Aeration
Cavitationusuallyoccurswhenthedemandforfluidbythepumpexceedsthevolumeoffluidbeing
supplied.
Thislowpressure/vacuumconditioncausesvaporcavitiestoformwithinthefluid.Asthefluid
passesthroughthepump,thesuddenchangefromlowpressuretohighpressurecausesthecavitiesto
collapseandproduceashockwave.Aerationoccurswhenairbubblescontaminatethefluid,andcollapse
asthey
passthroughthepump.Bothconditionsproducealoudknockingsound,andaredetrimentalto
thepumpandothersystemcomponents.Bothproblemscanusuallybetracedtothereservoirorthe
pumpsuctionline.Followtherecommendationsbelowtoeliminatethissourceofnoise.
The reservoir must be mounted
so that the bottom of the tank is well above the inlet of the
pump(s).This creates head pressure that will help provide the pump with constant flow and
preventcavitation.Also,choosealocationforthereservoirthatwillminimizeoveralllengthand
bendsinthesuctionline.
MOUNT RESERVOIR SO
THAT BOTTOM OF TANK
IS WELL ABOVE PUMP INLET
MAKE SURE ALL
CONNECTIONS
ARE AIRTIGHT
SUCTION LINES MUST
BE OF SUFFICIENT DIAMETER
AND REINFORCED
AGAINST COLLAPSE
Suctionlinesshouldbeadequatelysizedtoprovideunrestrictedflow,andifflexiblehoseisused,it
mustbeinternallyreinforcedagainstcollapsing.
Leaks around fittings and connections on the suction line(s) introduce air into the fluid.All
connectionsmustbe completely airtight.Inspectallflange type connections for
debrisor defects
before connecting them.Consider using a thread sealer on any threaded fittings in the suction
line.
1 of4
Page 54
Number: TSB0009
Date: June,2006
Revision: B
Whentwo or morepumpsmustshare asingleoutlet from thetank,a junction blockortee fitting
should be installed as close to the reservoir as possible.This helps deliver a balanced supply to
eachof the pumps.Avoid teeing the suctionline close to pumpsasshown
below.This tendsto
produceanunevensupplybetweenthepumps.
USE JUNCTION BLOCK OR
TEE FITTING LOCATED
CLOSE TO RESERVOIR
RECOMMENDED
FOR MULTI-PUMP SYSTE MS
AVOID TEEING LINE CLOSE
TO PUMPS. THIS RESULTS IN
UNBALANCED FLUID SUPPLY .
NOT RECOMMENDED
Theproperfluidlevelinthereservoirmustalwaysbemaintained.Ifthereservoirlevelistoolow,a
vortex can be createdwhich can allowair to enterthe suction line.Also,when the fluid levelis
low, there is not sufficient time for any air bubbles to
separate from the fluid before being re‐
circulatedthroughthesystem.
2 of4
Page 55
Number: TSB0009
Date: June,2006
Revision: B
StructureBorneNoise
Structurebornenoiseinatypicalhydraulicsystemalmostalwaysoriginatesfrompumpvibrationthat
becomestransmittedtothevesselstructure.Vibrationisinherentinthepumpoperation,buttheprime
moverofthepumpandcouplingscanalsobeasourceofvibrationandnoise.Thefollowing
stepscanbe
takentominimizestructurebornenoise.
Ifhardpipeortubeisusedforthehydraulicplumbing,itishighlyrecommendedthatshortlengths
of flexible hose be used between the pump(s) and the pipe.This will isolate pump vibrations,
preventing them from resonating throughout the
piping.Please note that classification society
codes may have special requirements for flexible hydraulic hoses installed in the engine room.
Shortlengthsofhoseshouldbeusedbetweenthepipeandallothercomponentsinthesystemas
well.
If the pump is connected to the prime mover by
a flexible coupling, any misalignment can
introducenoiseandvibration,andshouldbeminimized.
Ifthe pump isdrivenbyan electric motor,thepump/motorassembly shouldhaveresilient,shock
absorbingmaterialbuiltintothemountingstructuretoisolatevibrationsfromthevessel.
FluidBorneNoise
Fluid borne noise
refers to the rapid pulsations of flow and pressure that occur during the normal
operation of the hydraulic pump, especially variable displacem ent piston pumps.As these pulsations
travelthroughtheplumbing, they can be transmitted to thevesselstructureandtosystemcomponents
atanypointinthesystem.Thefollowing
methodswillminimizefluidbornenoiseproblems.
The best remedy for fluid borne noise is to add a noise suppressor, or silencer.These devices
smooth out the pressure spikes, and are most effective when installed on or close to the pump
pressure port.Suppressors areusually compact and easy
to install, and are availablefor a wide
rangeofsystempressures.
INPUT PRESSURE PULSE
OUTPUT PRESSURE PULSE
Another effective means of reducing
fluid borne noise is to properly secure
thelines with vibration isolating clamps.
Even when suppressors are used, small
pressure pulsations can become
amplified when pipes and hoses are
rigidly clamped to the vessel structure.
There are many types of clamps and
methods for isolating
pipe and tube
vibrations from the vessel.Even
standard clamps can be used if some
sortofresilientmountingbaseisadded.
3 of4
MOUNTING BASE WITH
RESILIENT VIBRATION
ISOLATION MATERIAL
PIPE
CLAMP
WITH
RESILIENT
INSERT
STANDARD
PIPE
CLAMP
Page 56
Number: TSB0009
Date: June,2006
Revision: B
Makesureto use an adequate numberofclampsas
well.Unsupported piping can amplify small
vibrations into airborne noise. Depending on the
diameter of the pipe or tube, the recommended
spacing of the supports on straight runs will vary.
Refer to the chart below for general
recommendations.Supportsshould
alsobeinstalled
onbothsidesofallbends,elbowsandfittings.
UNSUPPORTED PIPE WILL RESONATE VIBRATION
SUPPORT BENDS
ON BOTH SIDES
OuterDiameter ClampSpacing(MetalPipe) ClampSpacing(Tube)
Upto½”(14mm) 4’(1.2m) 3’(.9m)
½”to1”(14mmto25mm) 5’(1.5m) 4’(1.2m)
1”to1¼”(25mmto30mm) 7’(2.1m) 6”(1.8m)
1¼”to1½”(30mmto38mm) 8’(2.4m) 7’(2.1m)
1½”to2”(38mmto50mm) 10’(3m) 7’(2.1m)
Over2”(50mm) 12’(3.6m) N/A
Refertoclampmanufacturerforspecificspacingrecommendations
When hydraulic plumbing must pass through bulkheads or decks, some manner of vibration
isolationshouldbeused,especiallywhenusinghardpipe. Ifsubjected tovibration,bulkheads and
decks can act as loudspeakers, amplifying and transmitting the vibrations into airborne noise.
Special
bulkhead penetration inserts that isolate the pipe from the bulkhead with resilient,
watertight material can be very effective.If inserts are not available, consider adding flexible
hosingonbothsidesofthebulkheadordeck.
RESILIENT WATERTIGHT MATERIAL
TUBE
BULKHEAD
4 of4
Page 57
8 7 6 5 4 3 2 1
LIST OF MATERIALS - QUANTITY PER ASSEMBLY
ITEM DESCRIPTION QTY PART NUMBER REMARKS
1 COVER, ACTUATOR 1 0575A0007
2 SEAL, WIPER 1 0575A0013
3 TORQUE ARM 1 0575A0004
5 WASHER, SHAFT 1 0620A0015
6 NUT, HEX (SHAFT) 1 0620A0032
7 SHAFT 1 - SEE LENGTH VARIATION CHART
8 ROD END ASSY 2 0620A0023
D
C
B
A
8A ROD END 2 0620A0019
8B ROD END BEARING SUB-ASSEMBLY 2 0620A0045 0620A0022 BRG & 0720A0050 BUSH'G
8D NUT, HEX 2 9000U1539
9 DOWEL PIN 1 9000U0045
11 UPPER SEAL 1 0575S0019
12 SCREW, HEX (COVER, OPP. TRUN) 2 9000U1636
13 ACTUATOR HOUSING 1 - SEE LENGTH VARIATION CHART
14A BEARING, UPPER 1 0575A0008
14B BEARING, LOWER 1 0575A0009
16 GASKET 1 0575A0051 0.010" THICK
18 CAUTION PLATE 1 01137
19 NAME PLATE 1 0703A0138
20 DRIVE SCREW 6 227401
21 SERVO VALVE 1 0620H0018
22 SERVO MANIFOLD 1 0620H0049
23 SCREW 8 9000U1604 3/8-16 X 1.00 INCH HEX HEAD SS
25 MANIFOLD BRACKET 1 0620A0061
27 ROLL PIN 2 01427 3/4 INCH DIA X 2.00 INCH LONG
28 SCREW, MANIFOLD 4 9000U1603 3/8-16 X 3/4 LONG, FLAT HEAD SS
29 LOCK WASHER 4 25428 3/8 INCH
30A HOSE ASSEMBLY, SHORT; PORT "A" 1 0575H0020-A
30B HOSE ASSEMBLY, SHORT; PORT "B" 1 0575H0020-B
31A HOSE ASSEMBLY, LONG; PORT "A" 1 0575H0021-A
31B HOSE ASSEMBLY, LONG; PORT "B" 1 0575H0021-B
32 HYDRAULIC FITTING, CONNECTOR 4 0160H0102
33 HYDRAULIC FITTING, MANIFOLD, STRAIGHT 4 9000H1872
34 HYDRAULIC CYLINDER ASSEMBLY 2 0620H0037
35 HYDRAULIC FITTING, MANIFOLD, 45° 4 9000H0494
37 STANDOFF 1 0252U0595
38 SCREW, POT. HOUSING-STANDOFF 3 9000U0832 #10-24 X 1/2 INCH SHCS SS
40 SCREW, ELECTRICAL BOX - COVER 4 9000U1747 #10-32 X 1-1/4 PAN HEAD PHILLIPS, 18-8 SS
41 NUT, SPLINE CLAMP 2 01837 7/8-9 UNC-2B
42 SPLINE CLAMP BOLT 2 9000U1596 7/8-9 X 5.5, HEX HD, GRADE 8 ZINC PLATED
43 LOCK WASHER 2 9000U1595 SIZE: 7/8 INCH
44 SCREW, STANDOFF-COVER 3 9000U1529 #10-24 X 1/4 INCH SOC. HD. SHLD, SS
45 LOCK WASHER 3 9000U1532 Ø1/4" SS
47 SCREW, SEAL RETAINER 8 9000U0779 3/8-16 X 1.00 INCH SHCS, SS
50 SCREW, POTENTIOMETER 2 9000U2014 #10-32 X 3/4 INCH, SHCS, A286
53 PIN, TORQUE ARM 2 0720A0020
54 PIN RETAINER, TORQUE ARM 2 0720A0028
55 O-RING, LOWER BEARING RETAINER 1 0620S0048 Ø10 X Ø10.25 X 1/8 CS
57 BEARING RETAINER, LOWER 1 0575A0005
58 SCREW, LOWER BEARING RETAINER 12 9000U1597 1/2-13 UNC X 1-1/2 INCH, SHCS 316SS
67 GREASE FITTINGS, UPPER TRUNNION 2 01477 3/8-24 STRAIGHT
69 LOWER SEAL 2 0575S0033 ALL SEALS FACE (CUP SIDE) OUT
70 LOWER SEAL RETAINER 1 0575A0016
73 BEARING RETAINER, UPPER 1 0575A0006
74 SCREW, UPPER BEARING RETAINER 12 9000U1617 1/2-13 X 1.50 SHCS, GRADE 8, ZINC PLATED
76 DOWEL PIN 2 01581 1/4" DIA. X 3/4" LG
77 GREASE FITTING, LOWER TRUNNIONS 2 9000U1582 1/8 NPT, 67° SS
79 CENTERING BOLT 2 0575A0025
81 SET SCREW 6 9000U1835 1/2-13 X 3/4 LONG, SS
85A SHIM, 0.001 INCH THICK A/R 0575A0040-1 COLOR - AMBER
85B SHIM, 0.003 INCH THICK A/R 0575A0040-3 COLOR - GREEN
85C SHIM, 0.005 INCH THICK A/R 0575A0040-5 COLOR - BLUE
85D SHIM, 0.010 INCH THICK A/R 0575A0040-10 COLOR - BROWN
96 SHIM, CYLINDER TRUNNION 2 0703A0162-3 1/32 INCH THICK
100 LUBRICATION PLATE, UPPER BEARING TRUNNION 2 0720A0231
101 SCREWS, TRUNNION LUBRICATION PLATE 6 9000U1891 FHCS, #10-24 UNC X 1/2" LG
111 NUT, FIN 1 0620F0053 3-1/4-4 ACME SPECIAL
115 O-RING SEAL, HOUSING 1 0575S0044 Ø1/2 C.S. X 17-1/2 I.D. X 18-1/2 O.D.
121 EXTRACTOR WASHER 4 0720A0082
122 SCREW, HEX (COVER, TRUNNION SIDE) 2 9000U1637 HHCS, 3/4-10 X 4.5, GRD 8
123 WASHER, FLAT (COVER) 4 9000U1600 3/4 INCH
151 NUT, HEX 2 9000U1863 1-1/2 - 6
155 JUNCTION BOX ASSEMBLY 1 7100E0117
ENCLOSURE ASSEMBLY 1 7100E0114
POTENTIOMETER HOUSING ASSEMBLY 1 7100E0166
POTENTIOMETER HOUSING 1 7400E0088
COUPLING, POTENTIOMETER 1 7400E0087
PIN, SHAFT COUPLING 1 7400E0107
BEARING, DOUBLE SEALED 1 7400E0085
POTENTIOMETER 1 7200E0008
SERVO VALVE CONNECTOR 1 0252E0458
156 BEARING, TRUNNION 4 0703U0097/98 U0097 IS OUTER, U0098 IS INNER
157 PLUG 2 01292 1/2-20 UNF
163 PLUG 2 7075 1/4-18 NPT
164 O-RING, SEAL CARTRIDGE 1 0621S0021 Ø3/16 X 7.725 ID X 8.145 OD
166 O-RING, SEAL CARTRIDGE 1 0575S0022 Ø3/16 X 7.975 ID X 8.395 OD
170 SCREW, PLUG 4 0254U0040 3/8-16 X 3/8 LG, SS
171 ROLL PIN 2 148517 Ø1/8 X 0.63"
172 FITTING, 45° ELBOW 4 9000H2585 1/4 NPT
173 FITTING, PLUG 4 9000H2583 1/4 NPT
174 FITTING, STRAIGHT ADAPTER 2 9000H2194 -03 MALE X 1/8 NPTF
176 GREASE FITTING, ROD ENDS 2 01441 1/8 NPT
177 O-RING, SHAFT 1 9000S2363 BUNA-N, 70 DURO
178 RING, BACKUP; SHAFT 1 9000S2364 90 DURO
A.R. = AS REQUIRED
BILL OF MATERIAL DOES NOT SHOW LINE ITEMS THAT DO NOT OCCUR ON THIS DRAWING.
}
}
}
G
A
G
H
C
C
B
B
H
SPREAD FLANGES
POSITION
STORED
POSITION
32
DISTANCE
"B"
DISTANCE
"A"
E
F
163
34
122123
14.40
365.9
A
SURFACE "A"
58
70
DETAIL D
170
H
31A
166
31B
164
27.99
711.0
9
30A
101
67
100
30B
SECTION A-A
5
(3)
85
81
7374
11
2
16
115
14A
13
14B
55
57
81
D
47
69
7
111
EXPORT CONTROL:
THESE COMMODITIES, TECHNOLOGY
OR SOFTWARE MAY ONLY BE EXPORTED FROM
THE UNITED STATES IN ACCORDANCE WITH THE
EXPORT ADMINISTRATION REGULATIONS.
DIVERSION CONTRARY TO U.S. LAW IS PROHIBITED.
176
171
174
38 44 45
6
50
12
C
NOTICE:
THE INFORMATION CONTAINED ON THIS
DRAWING IS CONSIDERED PROPRIETARY
AND DISCLOSURE TO OTHERS, IN
WHOLE OR IN PART, IS PROHIBITED
WITHOUT WRITTEN APPROVAL
FROM NAIAD DYNAMICS US, INC.
22.63
574.8
172 173
123
12
27
1-1/8 HEX
(REF)
PORT
"A"
PORT
"B"
PORT
"B"
PORT
"A"
35
79
3
76
151
1
22
23
25
28
29
DETAIL C
NOTE RELATIVE POSITION OF
ITEMS 177 & 178
UNLESS OTHERWISE NOTED
DIMENSIONS ARE IN INCHES
MILLIMETERS ARE SHOWN IN [ ]
TOLERANCES:
FRACTIONAL ..........
.XX DECIMAL ..........
.XXX DECIMAL .......
ANGULAR ...............
BREAK SHARP EDGES 0.005 - 0.015 R MAX
SURFACE FINISH ...
THIRD ANGLE PROJECTION
DO NOT SCALE DRAWING
INCH
± 0.03
± 0.03
± 0.010
± 0.50° (30')
125
33
.XXX
21
.X
.XX
177
178
[mm]
± 0.8
± 0.25
± 0.13
26.50
673.1
A
DRAWN
CHECKED
APPROVED
PROJECT:
_
J. FRUIN
CPE
MJW
REVISIONS
REV.ZONE
2691 21 MAY 10
A
-
B
-
2730
SUB-ASSY 0620A0045 WAS INDIVIDUAL COMPONENTS.
ILLUS. REFLECT SHAFT CHANGE, ITEM 121 WAS QTY=2,
DESCRIPTION
07 OCT 10
BY / APPROVEDDATEECN
JPZ / JWF
JPZ / JWF
ITEM 100 WAS 0575A0031.
C
-
-
-
2753
D
2785
E
2806
DEFINE PORT "A" & "B" HOSE ASSEMBLIES.
NOTE 9: 3M MARINE SEALANT 4200 WAS RTV100.
ITEM 174 WAS 9000U1902, REM'D ITEM 175 (VT40S0050),
26 JAN 11
22 JUN 11
07 OCT 11
JWF / MJW
JWF / JRF
JWF / CPE
ITEM 176 WAS 9000U1812.
F
-
-
2945
G
3046
H
3101
ADD ITEMS 177 & 178.
ADDED LONG LENGTH
ADDED "DETAIL D"
CHOCKFAST VENTING PORTS WERE 1/8 NPT
18 FEB 13
21 AUG 14
8 JAN 16
JWF / MW
MJW / CPE
DM/MJW
REPLACED ITEM 22, 0620H0047 WITH 0620H0049
REPLACED ITEM 172, 9000H1888 WITH 9000H2585
REPLACED ITEM 173, 9000H1889 WITH 9000H2583
ITEM 6 SCREW, HEX (SHAFT) 2 1/2-12 GRADE 8 400 FT-LBS [542 N-M]
ITEM 8D NUT, JAM, HEX SEE NOTE 1 SEE NOTE 1 600 FT-LBS [813 N-M]
ITEM 12 SCREW, COVER 3/4-10 GRADE 8 200 FT-LBS [270 N-M]
ITEM 23 SCREW, BRACKET 3/8-16 SS 20 FT-LBS [27 N-M]
ITEM 28 SCREW, MANIFOLD 3/8-16 SS 20 FT-LBS [27 N-M]
ITEM 41 NUT, SPLINE CLAMP 7/8-9 GRADE 8 282 FT-LBS [383 N-M]
APPLY 3M MARINE SEALANT 4200 TO SEAL RETAINER SCREWS (ITEM 47) AND SET SCREWS (ITEM 170).
09 DEC 09
NOTES
1 ADJUST ENGAGEMENT OF THE ROD END (ITEM 8A) IN THE CYLINDER ROD (ITEM 34) SO THAT THE ROD IS EXTENDED
5.093 ± 0.021 FROM TORQUE ARM PIN, AS SHOWN. APPLY THREAD LOCKING COMPOUND, LOCTITE #242 OR
EQUIVALENT, AND TORQUE NUT TO 600 FT-LBS [813 N-M] FOR 0620A0019 ROD END.
2 ¾-10 UNC-2B COVER PLATE JACKING SCREW HOLES SHOWN IN TOP VIEW.
3 SET SCREW (ITEM 81, 3 REQD) USED TO PLUG ½-13 UNC UPPER BEARING RETAINER JACKING SCREW HOLES – AS SHOWN
IN SECTION A-A.
4 SET SCREW (ITEM 81, 3 REQD) USED TO PLUG ½-13 UNC LOWER BEARING RETAINER JACKING SCREW HOLES NOT
SHOWN.
5 ALL BEARINGS (ITEMS 8C, 14A, 14B) AND HOUSING (ITEM 13)TO BE PACKED WITH LUBRIPLATE MARINE LUBE, A WATER
REPELLENT EXTREME PRESSURE CALCIUM TYPE GREASE - NAIAD NO. 01155.
6 INSTALL LOWER BEARING RETAINER (ITEM 57) WITH 3M MARINE SEALANT 4200 BETWEEN IT AND THE HOUSING (ITEM
13).
7 TORQUE VALUES:
ITEM# DESCRIPTION THREAD GRADE TORQUE
ITEM 47 SCREW, RETAINER 3/8-16 SS 17 FT-LBS [23 N-M]
ITEM 58 SCREW, LWR. BRG. RET. 1/2-13 SS 316 43 FT-LBS [58N-M]
ITEM 74 SCREW, UPR. BRG. RET. 1/2-13 GRADE 8 120FT-LBS [162 N-M]
ITEM 111 NUT, FIN 3-1/4 – 4 ACME SS 304 SEE INSTALLATION MANUAL
ITEM 122 SCREW, COVER 3/4-10 GRADE 8 200 FT-LBS [270 N-M]
8 PRELOAD BEARINGS BY INSTALLING TWO SEGMENT TOOLS AT THE UPPER BEARING
RETAINER FACE INTO THREADED HOLES IN THE ACTUATOR HOUSING (SURFACE “A’) WITH
FOUR SCREWS (ITEM 74) AT POSITIONS 2 O’CLOCK, 4 O’CLOCK, 8 O’CLOCK AND 10 O’CLOCK.
TORQUE SCREWS IN A CROSSING PATTERN (2 O’CLOCK, 8 O’CLOCK, 4 O’CLOCK AND 10
O’CLOCK) INCREMENTALLY FROM 120 IN-LBS (10 FT-LBS) [13 N-M] TO 75 FT-LBS [98 N-M]
ROTATE SHAFT (ITEM 7) A MINIMUM OF THREE REVOLUTIONS AFTER EACH INCREASE OF SCREW TORQUE. SHAFT SLIP
TORQUE SHOULD BE 85-95 FT-LBS [115-130 N-M] WHEN NEITHER UPPER OR LOWER SEALS ARE INSTALLED.
MEASURE DISTANCE FROM SURFACE “A” TO BEARING OUTER RACE.
REMOVE SEGMENT TOOLS AND INSTALL SHIMS (ITEM 85) TO ATTAIN MEASURED DISTANCE.
INSTALL UPPER BEARING RETAINER (ITEM 73) WITH 12 SCREWS (ITEM 74) AND TORQUE THE SCREWS IN A CROSSING
PATTERN TO FINAL SCREW TORQUE VALUE OF 120 FT-LBS [162 N-M].
FINAL SHAFT SLIP TORQUE SHOULD BE 95-105 FT-LBS [130-142 N-M].
IF SEGMENT TOOLS ARE NOT AVAILABLE THE UPPER BEARING RETAINER (ITEM 73) CAN BE USED WITH FOUR SCREWS
(ITEM 74) AT POSITIONS 12 O’CLOCK, 3 O’CLOCK, 6 O’CLOCK AND 9 O’CLOCK.
TORQUE SCREWS IN A CROSSING PATTERN (12 O’CLOCK, 6 O’CLOCK, 3 O’CLOCK AND 9 OCLOCK) INCREMENTALLY FROM
60 IN-LBS (5 FT-LBS) [7 N-M] TO 240 IN-LBS (20 FT-LBS) [27 N-M].
ROTATE THE SHAFT A MINIMUM OF THREE REVOLUTIONS AFTER EACH TORQUE INCREASE.
FINAL SHAFT SLIP TORQUE, SHIMS AND INSTALLATION OF UPPER RETAINER SAME AS WITH SEGMENTS.
D
9 APPLY LOCTITE #242 OR EQUIVALENT TO ITEMS 8D, 23,28, 58, 74, 81.
10 APPROXIMATE DRY WEIGHT 0575A0001: 1400 LBS [636 KG] EXCLUDING HYDRAULIC OIL.
G
APPROXIMATE DRY WEIGHT 0575A0001L: 1550 LBS [703 KG] EXCLUDING HYDRAULIC OIL
11 1.00-8 UNC HOUSING JACKING SCREW HOLES SHOWN IN TOP VIEW.
12 MANUALLY RE-TAP #10-32 HOLES (2 PLACES – TO CLEAN) PRIOR TO INSTALLATION OF ITEM #50 SHC SCREWS.
G
DISTANCE
"A"
12.69
[322.4]
[480.0]
DISTANCE
"B"
53.04
[1347.3]
59.25
[1505.0]
DATE
LENGTH VARIATION CHART
ASSEMBLY
NUMBER
SHAFT
(ITEM 7)
ACTUATOR HOUSING
(ITEM 13)
0575A0001 0575A0003 0575A0002
0575A0001L 0575A0003-L 0575A0002L 18.90
Naiad Dynamics US, Inc.
Shelton, Connecticut, USA
DATE
09 DEC 09
DATE
2 NOV 18
D
SCALE:
ACTUATOR ASSEMBLY
CODE IDENT NO. REV.DWG NO.SIZE
5JNL2
NONE
MODEL 575
0575A0001
SHEET OFACTUAL WEIGHT:
1
D
C
B
A
H
2
12345678
Page 58
8 7 6 5 4 3 2 1
REVISIONS
D
155
40
20
18
20
19
REV.ZONE
-
-
-
-
-
-
-
-
2691 21 MAY 10
A
2730 07 OCT 10
B
2753
C
2785 22 JAN 11
D
2806 07 OCT 11
E
2945 18 FEB 13
F
3046
G
3101 8 JAN 16
H
SEE SHEET 1
SEE SHEET 1
SEE SHEET 1
SEE SHEET 1
DESCRIPTION
26 JAN 11
21 AUG 14
BY / APPROVEDDATEECN
JPZ / JWF
JPZ / JWFSEE SHEET 1
JWF / MJW
JWF / JRFSEE SHEET 1
JWF / CPESEE SHEET 1
JWF / MWSEE SHEET 1
MJW / CPE
DM/MJW
D
C
B
B
TO AVOID SERIOUS PERSONAL INJURY
NAIAD DYNAMICS US, INC. WWW.NAIAD.COM
!
STAY CLEAR OF MOVING PARTS
CAUTION
!
STABILIZER
SHIP ROLL
NAIAD DYNAMICS US, INC. WWW.NAIAD.COM
MODEL NO. SERIAL NO.
5
7
5
X
X
X
X
X
X
X
X
C
B
156
121
1
5.093
129.36
41 42 43
157
23 53 54
REF: STAMP 1/4" TEXT HEIGHT
192020
182020
SHIP ROLL
STABILIZER
MODEL NO. SERIAL NO.
X
X
X
X
X
X
5
7
5
NAIAD DYNAMICS US, INC. WWW.NAIAD.COM
!
STAY CLEAR OF MOVING PARTS
TO AVOID SERIOUS PERSONAL INJURY
CAUTION
X
X
!
B
A
156
121
96
SECTION B-B
8D
8A
8B
8C
EXPORT CONTROL:
THESE COMMODITIES, TECHNOLOGY
OR SOFTWARE MAY ONLY BE EXPORTED FROM
THE UNITED STATES IN ACCORDANCE WITH THE
EXPORT ADMINISTRATION REGULATIONS.
DIVERSION CONTRARY TO U.S. LAW IS PROHIBITED.
NOTICE:
THE INFORMATION CONTAINED ON THIS
DRAWING IS CONSIDERED PROPRIETARY
AND DISCLOSURE TO OTHERS, IN
WHOLE OR IN PART, IS PROHIBITED
WITHOUT WRITTEN APPROVAL
FROM NAIAD DYNAMICS US, INC.
NAIAD DYNAMICS US, INC. WWW.NAIAD.COM
UNLESS OTHERWISE NOTED
DIMENSIONS ARE IN INCHES
MILLIMETERS ARE SHOWN IN [ ]
TOLERANCES:
FRACTIONAL ..........
.XX DECIMAL ..........
.XXX DECIMAL .......
ANGULAR ...............
BREAK SHARP EDGES 0.005 - 0.015 R MAX
SURFACE FINISH ...
THIRD ANGLE PROJECTION
INCH
± 0.03
± 0.03
± 0.010
± 0.50° (30')
125
.X
.XX
.XXX
[mm]
± 0.8
± 0.25
± 0.13
DO NOT SCALE DRAWING
DRAWN
J. FRUIN
CHECKED
CPE
APPROVED
MJW
PROJECT:
_
DATE
09 DEC 09
DATE
09 DEC 09
DATE
2 NOV 18
D
SCALE:
ACTUATOR ASSEMBLY
CODE IDENT NO. REV.DWG NO.SIZE
5JNL2
NONE
Naiad Dynamics US, Inc.
Shelton, Connecticut, USA
MODEL 575
0575A0001
A
H
SHEET OFACTUAL WEIGHT:
2
2
12345678
Page 59
Page 60
Page 61
8
67
5
4
57.00
[1447.8]
25.00
[635.0]
3
REVISIONS
ECN
SEE OTHER SHEETS FOR REVISION HISTORY
12
DATE BY / APPROVEDDESCRIPTIONZONE REV.
D
C
B
A
DUE TO THE UNIQUE FLANGELESS, KEYLESS, AND
SPLINELESS FIN MOUNTING METHOD OF THE NAIAD
DESIGN, ALL FIN ACTUATOR ASSEMBLIES MAY BE
INSTALLED IN ANY CONVENIENT RADIAL (360°)
POSITION IN THE HULL.
NO SPECIFIC ACTUATOR-TO-FIN RADIAL
ORIENTATION IS REQUIRED.
FIN ACTUATOR
ASSEMBLY
1
TYPICAL HULL
REINFORCEMENT
STRUCTURE
"FIN-TO-HULL" CLEARANCE
8
SEE "MOUNTING DETAIL"
SHEET 2
TYPICAL HULL
REINFORCEMENT
31
STRUCTURE
7
FIN
23
NOMINAL "FIN-TO-HULL CLEARANCE"
MODEL CLEARANCE
575 1.00 [25.4] ± 0.13 [3.2]
IMPORTANT: CLEARANCE MUST BE
MINIMIZED FOR VESSELS CAPABLE
OF 20 KNOTS OR MORE
FIN LOCATED
IN PROTECTED
REGION OF HULL
HULL ENVELOPE
NOTES
:
1 ! WARNING
SKIN, FRAMES AND STRINGERS AT ALL JOINING SURFACES. REFER TO HULL INSERT DRAWING
(SEE TABLE) FOR DETAILS. STRUCTURAL SHAPES THAT ARE SHOWN AS TYPICAL MAY BE FLANGED
OR BULBED AS DETERMINED AND SPECIFIED BY THE INSTALLER'S NAVAL ARCHITECT.
2 FIN ACTUATOR ASSEMBLY HOUSING BOTTOM TO BE INSTALLED FLUSH WITH THE HULL.
3 IMPORTANT
CLEARANCE, ESPECIALLY FOR HIGHER SPEED VESSELS. TOP OF FIN MAY BE BUILT-UP TO SUIT DURING
INSTALLATION. ENSURE THAT FIN CLEARS THE HULL AT ALL POINTS THROUGH ITS TRAVEL.
BE SURE FEMALE TAPER IN THE FIN ASSEMBLY REMAINS CLEAN AND DRY.
4 CAUTION
OF THE FIN NUT BEFORE INSTALLING INTO SHAFT.
5 CAUTION
SURFACE OR THE FEMALE TAPER IN THE FIN ASSEMBLY. THESE SURFACES MUST REMAIN CLEAN AND DRY.
6 TO MINIMIZE THE POSSIBILITY OF GALVANIC CORROSION, EACH ACTUATOR ASSEMBLY MUST BE CONNECTED TO
THE SHIP'S BONDING SYSTEM. ALTHOUGH ALL SEAWATER-EXPOSED PARTS OF THE ACTUATOR ARE
STAINLESS STEEL, ELECTRICAL BONDING IS A CRITICAL CORROSION INHIBITOR AND IS A REQUIRED STEP
IN PROPER INSTALLATION.
7 REFER TO NAIAD DYNAMICS INSTALLATION HANDBOOK 0525M0124 FOR
ADDITIONAL INSTRUCTIONS, OR CONTACT NAIAD DYNAMICS DIRECTLY.
! : THE HULL INSERTS AND ASSOCIATED STIFFENERS MUST BE RIGIDLY WELDED TO THE
: THE HULL REINFORCEMENT STRUCTURE SHOULD BE FABRICATED TO MINIMIZE FIN-TO-HULL
: APPLY LOCTITE BRAND MARINE GRADE ANTI-SEIZE LUBRICANT LIBERALLY TO THE THREADS
: DO NOT APPLY ANTI-SEIZE LUBRICANT OR ANY OTHER PRODUCT TO THE TAPERED SHAFT
76
FIN ACTUATOR ASSEMBLY
(ENVELOPE DIMENSIONS)
MINIMUM
REQUIRED
SERVICE
SPACE
52.97
[1345.3]
STANDARD
59.17
[1502.8]
LONG
5
22.63
50.62
[1285.8]
18.90
[480.0]
LONG
EXPORT CONTROL:
THESE COMMODITIES, TECHNOLOGY OR SOFTWARE MAY ONLY BE
EXPORTED FROM THE UNITED STATES IN ACCORDANCE WITH THE EXPORT
ADMINISTRATION REGULATIONS. DIVERSION CONTRARY TO U.S. LAW IS
PROHIBITED.
NOTICE:
THE INFORMATION CONTAINED ON THIS DRAWING IS CONSIDERED
PROPRIETARY AND DISCLOSURE TO OTHERS, IN WHOLE OR IN PART, IS
PROHIBITED WITHOUT WRITTEN APPROVAL FROM NAIAD DYNAMICS US, INC.
12.70
[322.6]
STANDARD
[574.8]
38.65
[981.7]
STANDARD
44.85
[1139.1]
LONG
4
19.00
[482.6]
IMPORTANT WARNING:
THE ILLUSTRATIONS SHOWN ON THIS DRAWING ARE TYPICAL HULL REINFORCEMENT
STRUCTURES AND MATERIALS, AND ARE INTENDED AS A GENERAL GUIDE ONLY.
38.00
[965.2]
EACH VESSEL'S REINFORCEMENT STRUCTURE MUST BE CONSIDERED A UNIQUE
DESIGN DUE TO THE VARIETY OF FORCES DISTRIBUTED TO THE HULL RESULTING
FROM VARIOUS INDIVIDUAL VESSEL PARAMETERS. THESE PARAMETERS INCLUDE,
BUT ARE NOT LIMITED TO , THE SPECIFIC ACTUATOR MODEL AND FIN SIZE AND THEIR
LONGITUDINAL AND TRANSVERSE LOCATION, THE MAXIMUM OPERATING SPEED OF
THE VESSEL, THE VESSEL DISPLACEMENT, CENTER OF GRAVITY, TRANSVERSE AND
LONGITUDINAL METACENTER, HULL FORM, PURPOSE AND USAGE, ROLLING AND
PITCHING TENDENCIES AND FORCES, AS WELL AS ADJACENT EQUIPMENT,
STRUCTURES AND UNDERWATER APPENDAGES. IN ADDITION, EXTRAORDINARY
FORCES CAN RESULT WHEN THE STABILIZER FINS ARE NOT HYDRAULICALLY
CENTERED DURING AN ASTERN MANEUVER. THE POSSIBILITY OF THE FIN STRIKING
AN UNDERWATER OBJECT AND THE POSSIBILITY OF THE VESSEL RUNNING AGROUND
MUST ALSO BE CONSIDERED WHEN DESIGNING HULL STRUCTURES.
NAIAD ENGINEERS CAN PROVIDE LOAD INFORMATION FOR ANY NAIAD MODEL FIN AND
FIN ACTUATOR ASSEMBLY COMBINATION. RESPONSIBILITY FOR HULL STRUCTURES
35.00
[889.0]
UNLESS OTHERWISE NOTED
DIMENSIONS ARE IN INCHES
MILLIMETERS ARE SHOWN IN [ ]
FRACTIONAL ..........
.XX DECIMAL ..........
.XXX DECIMAL .......
ANGULAR ...............
BREAK SHARP EDGES 0.005 - 0.015 R MAX
SURFACE FINISH ...
THIRD ANGLE PROJECTION
DO NOT SCALE DRAWING
AS WELL AS FOR SEEKING CLASSIFICATION APPROVAL RESTS WITH THE
SHIPBUILDER, NAVAL ARCHITECT, OR INSTALLER.
FIN SELECTION & LOCATION
THE FINS ARE TYPICALLY INSTALLED NORMAL TO THE HULL, WITHIN THE BLOCK
SECTION CREATED BY THE BEAM AND THE KEEL TO MINIMIZE THE POSSIBILITY OF
DAMAGE FROM STRIKES.
IT IS IMPERATIVE THAT THE FINS ARE INSTALLED IN THE HULL SUCH THAT THEIR
AVAILABLE AREA IS EFFICIENTLY UTILIZED, OTHERWISE THE PROPORTIONAL CONTROL
SYSTEM WILL COMMAND LARGER FIN ANGLES TO GENERATE THE FORCES REQUIRED
TO NEUTRALIZE THE ROLL TENDENCY, THUS CAUSING INCREASED FIN DRAG AND
WATER DISTURBANCE. THE STABILIZING MOMENT CREATED BY THE FINS MUST ACT
UPON THE VESSEL'S ROLL AXIS, SO IDEALLY THE PLANE OF THE FIN WHEN MOUNTED
NORMAL TO THE HULL IS NOT FAR FROM INTERSECTING THE ROLL AXIS. TRANSVERSE
POSITIONING OF THE FINS IS NORMALLY RELATIVELY OUTBOARD TO MAXIMIZE THE
EFFECTIVE LEVER ARM AND AVOID ALIGNMENT WITH THE PROPELLER FLOW FIELD.
LONGITUDINAL POSITIONING OF THE FINS SHOULD BE NEAR THE LONGITUDINAL
CENTER OF GRAVITY, THE ENTIRE FIN WITHIN THE MIDDLE ONE FIFTH OF THE
WATERLINE LENGTH (FOR SLOWER VESSELS, THE MIDDLE ONE THIRD MAY BE
ACCEPTABLE). MANY ADDITIONAL FACTORS MUST BE CONSIDERED WHEN SELECTING
FIN LOCATION INCLUDING PROXIMITY TO OTHER UNDERWATER APPENDAGES,
PROXIMITY TO THE PROPELLER OR WATERJET INTAKE FLOW FIELD, EXTRAORDINARY
FORCES GENERATED FROM PITCHING (AS MAY OCCUR IF THE FINS ARE TOO FAR
FORWARD), AND THE LOW DEADRISE OF AFT SECTIONS OF THE HULL (WHICH IMPAIR
EFFICIENCY, CAUSING WIDER FIN ANGLES, GREATER DRAG AND INCREASED FIN WASH).
WARNING:
FINS MUST BE LOCATED IN ACCORDANCE WITH NAIAD DYNAMICS BULLETIN NB0105.
CONSULT NAIAD ENGINEERING OR APPLICATIONS DEPARTMENTS FOR SPECIFIC REVIEW.
ACTUATOR SELECTION AND HULL REINFORCEMENT:
FIN ACTUATOR MUST BE SELECTED TO POWER THE FINS AND SAFELY WITHSTAND THE
LOAD GENERATED BY THE FINS WHEN DRIVEN THROUGH THE WATER AT THEIR MAXIMUM
UNDERWAY FIN ANGLES WHILE AT THE OPERATING SPEEDS OF THE VESSEL. CONSULT
NAIAD DYNAMICS FOR APPROPRIATE FIN-TO-ACTUATOR COMBINATIONS FOR SPECIFIC
VESSELS.
FIN ACTUATOR HULL REINFORCEMENT MUST BE DESIGNED TO ACCOMMODATE NOT ONLY
THE NORMAL OPERATING LOADS GENERATED BY THE FIN AND FIN ACTUATOR
COMBINATION, BUT ALSO THE EXTRAORDINARY LOADS ENCOUNTERED DUE TO FIN
STRIKES OR GROUNDING.
WARNING:
DESIGN AND FABRICATION OF HULL REINFORCEMENT FOR A SPECIFIC VESSEL IS THE
RESPONSIBILITY OF THE INSTALLER. NAIAD GENERAL GUIDELINES ARE AVAILABLE, BUT
EACH VESSEL MUST BE CONSIDERED SPECIFICALLY. INSTALLER CONSULTATION WITH A
NAVAL ARCHITECT TO DETERMINE AN APPROPRIATE STRUCTURE TO SAFELY
DISTRIBUTE FIN ACTUATOR LOADS IS REQUIRED.
.XXX
[mm]
.X
.XX
INCHTOLERANCES:
± 0.03
± 0.03
± 0.010
± 0.50° (30')
125
3
DRAWN
JWF
CHECKED
JRF/CE 15 APR 09
± 0.8
± 0.25
APPROVED
± 0.130
JWF 16 APR 09
PROJECT:
_
D
C
B
DATE
08 APR 09
DATE
DATE
INSTALLATION DRAWING
MODEL 575 ACTUATOR
METAL HULL, WITH CHOCKFAST
CODE IDENT NO.
SIZE
D
SCALE: NONE
5JNL2
DWG NO.
Naiad Dynamics US, Inc.
Shelton, Connecticut, USA
0575D0038
A
REV.
F
SHEET 1 OF 4
21
Page 62
D
C
8 76
FAIR HULL INSERT AT
ATHWART SHIP POINTS
AS REQUIRED
B
A
C
C
5
VIEW C-C
(ENLARGED)
A
4
HULL INSERTS THAT REQUIRE A BOLT AND NUT
CONFIGURATION CALL FOR A HULL REINFORCEMENT
STRUCTURE THAT ALLOWS WRENCH CLEARANCE AND
FASTENER ASSEMBLY CLEARANCE. THIS IS MOST
EASILY ACHIEVED BY ROTATING THE HULL INSERT
BOLT PATTERN AT AN ANGULAR DISPLACEMENT "
FROM THE REINFORCEMENT STRUCTURE SUCH THAT
SUFFICENT CLEARANCE IS ACHIEVED.
Ø1.031 [26.19] THROUGH
(8) MOUNTING HOLES
EQUALLY SPACED ON
Ø22.000 [Ø558.8] BOLT CIRCLE
"
3
ECN DATE BY / APPROVEDDESCRIPTIONZONE REV.
A
2503
1.50 [38.1] WAS 1.25 [31.8], 1.88 [47.8] WAS 1.50 [38.1].
(REF. ALL SHEETS 1-4).
ADDED AXIAL DIMENSION TO CHOCKFAST DAM HEIGHT &
B
2664
APPROXIMATE VOLUME OF CHOCKFAST NOTE 8
C
2804
ADDED ISO VIEW OF HULL REINFORCEMENT
D
3048
ADDED LONG LENGTH.
E
REMOVED THREADED HULL INSERT OPTION & PLUG WELDING
F
REPLACED POTENTIOMETER WITH NON-CONTACT FEEDBACK
21
REVISIONS
JWF / CPE16 OCT 09
JPZ / JWF22 FEB 10
16 AUG 13 JWF / CPE
29 AUG 14 MJW / CPE
16 JAN 2017 CPE / MJW
15 JAN 2018 CPE / MJW
CORRECT
D
C
B
A
HULL PLATING THICKNESS MUST BE
INCREASED THROUGHOUT STABILIZER
FOUNDATION AREA IN ACCORDANCE WITH
CLASSIFICATION SOCIETY REQUIREMENTS
TYPICAL HULL
REINFORCEMENT
1
STRUCTURE
IMPORTANT WARNING:
THE ILLUSTRATIONS SHOWN ON THIS DRAWING ARE TYPICAL HULL REINFORCEMENT
STRUCTURES AND MATERIALS, AND ARE INTENDED AS A GENERAL GUIDE ONLY.
EACH VESSEL'S REINFORCEMENT STRUCTURE MUST BE CONSIDERED A UNIQUE
DESIGN DUE TO THE VARIETY OF FORCES DISTRIBUTED TO THE HULL RESULTING
FROM VARIOUS INDIVIDUAL VESSEL PARAMETERS. THESE PARAMETERS INCLUDE,
BUT ARE NOT LIMITED TO , THE SPECIFIC ACTUATOR MODEL AND FIN SIZE AND THEIR
LONGITUDINAL AND TRANSVERSE LOCATION, THE MAXIMUM OPERATING SPEED OF
THE VESSEL, THE VESSEL DISPLACEMENT, CENTER OF GRAVITY, TRANSVERSE AND
LONGITUDINAL METACENTER, HULL FORM, PURPOSE AND USAGE, ROLLING AND
PITCHING TENDENCIES AND FORCES, AS WELL AS ADJACENT EQUIPMENT,
STRUCTURES AND UNDERWATER APPENDAGES. IN ADDITION, EXTRAORDINARY
FORCES CAN RESULT WHEN THE STABILIZER FINS ARE NOT HYDRAULICALLY
CENTERED DURING AN ASTERN MANEUVER. THE POSSIBILITY OF THE FIN STRIKING
AN UNDERWATER OBJECT AND THE POSSIBILITY OF THE VESSEL RUNNING AGROUND
MUST ALSO BE CONSIDERED WHEN DESIGNING HULL STRUCTURES.
NAIAD ENGINEERS CAN PROVIDE LOAD INFORMATION FOR ANY NAIAD MODEL FIN AND
FIN ACTUATOR ASSEMBLY COMBINATION. RESPONSIBILITY FOR HULL STRUCTURES
AS WELL AS FOR SEEKING CLASSIFICATION APPROVAL RESTS WITH THE
SHIPBUILDER, NAVAL ARCHITECT, OR INSTALLER.
8
ANGLE " "
B
FLANGE SURFACE MUST BE FLAT
AND PERPENDICULAR TO BORE
TYPICAL HULL
REINFORCEMENT
1
STRUCTURE
Ø14.50
[Ø368.3]
HULL INSERT
(PLAN VIEW)
HULL INSERT
"T" FLANGE THICKNESS
(SEE SHEET 3)
2
TO MINIMIZE THE POTENTIAL FOR HYDRODYNAMIC NOISE,
HULL INSERT MUST BE INSTALLED FLUSH WITH THE HULL
NOT CORRECT
B
HULL REINFORCEMENT:
FIN ACTUATOR HULL REINFORCEMENT MUST BE DESIGNED TO
ACCOMMODATE NOT ONLY THE NORMAL OPERATING LOADS
VIEW B-B
GENERATED BY THE FIN AND FIN ACTUATOR COMBINATION, BUT
ALSO THE EXTRAORDINARY LOADS ENCOUNTERED DUE TO FIN
STRIKES OR GROUNDING.
WARNING:
DESIGN AND FABRICATION OF HULL REINFORCEMENT FOR A SPECIFIC
VESSEL IS THE RESPONSIBILITY OF THE INSTALLER. NAIAD GENERAL
GUIDELINES ARE AVAILABLE, BUT EACH VESSEL MUST BE CONSIDERED
SPECIFICALLY. INSTALLER CONSULTATION WITH A NAVAL ARCHITECT
TYPICAL HULL
REINFORCEMENT
1
STRUCTURE
HULL INSERT
TO DETERMINE AN APPROPRIATE STRUCTURE TO SAFELY DISTRIBUTE
FIN ACTUATOR LOADS IS REQUIRED.
7
THICKEN SHIP'S HULL PLATING THROUGHOUT THE
STABILIZER FOUNDATION IN ACCORDANCE WITH
CLASSIFICATION SOCIETY REQUIREMENTS.
VIEW A-A
67
5
EXPORT CONTROL:
THESE COMMODITIES, TECHNOLOGY OR SOFTWARE MAY ONLY BE
EXPORTED FROM THE UNITED STATES IN ACCORDANCE WITH THE EXPORT
ADMINISTRATION REGULATIONS. DIVERSION CONTRARY TO U.S. LAW IS
PROHIBITED.
NOTICE:
THE INFORMATION CONTAINED ON THIS DRAWING IS CONSIDERED
PROPRIETARY AND DISCLOSURE TO OTHERS, IN WHOLE OR IN PART, IS
PROHIBITED WITHOUT WRITTEN APPROVAL FROM NAIAD DYNAMICS US, INC.
4
UNLESS OTHERWISE NOTED
DIMENSIONS ARE IN INCHES
MILLIMETERS ARE SHOWN IN [ ]
TOLERANCES: INCH
FRACTIONAL ..........
.XX DECIMAL ..........
.XXX DECIMAL .......
ANGULAR ...............
BREAK SHARP EDGES 0.005 - 0.015 R MAX
SURFACE FINISH ...
THIRD ANGLE PROJECTION
DO NOT SCALE DRAWING
3
SEE ALSO INSTALLATION HANDBOOK PART NUMBER: 0525M0124
± 0.03
± 0.03
± 0.010
± 0.50° (30')
125
.XXX
DRAWN
J. FRUIN 08 APR 09
CHECKED
[mm]
JRF/CE 15 APR 09
± 0.8
.X
± 0.25
.XX
APPROVED
± 0.130
JWF 16 APR 09
PROJECT:
_
DATE
DATE
DATE
INSTALLATION DRAWING
MODEL 575 ACTUATOR
METAL HULL, WITH CHOCKFAST
SIZE
CODE IDENT NO.
D
5JNL2 F
SCALE: NONE
DWG NO.
Naiad Dynamics US, Inc.
Shelton, Connecticut, USA
0575D0038
12
A
REV.
SHEET 2 OF 4
Page 63
D
C
8 76
INSTALLATION AND CHOCKFAST PROCEDURE:
IMPORTANT: READ, UNDERSTAND AND PREPARE FOR THIS ENTIRE PROCEDURE BEFORE BEGINNING.
1. REMOVE THE FOUR 1/2 INCH -13 X 2.75 LONG FLAT HEAD SCREWS (ITEM 1) HOLDING THE CHOCKFAST
RETAINER (ITEM 2) TO THE LOWER BEARING RETAINER AND CAREFULLY STORE THE SCREWS FOR
LATER USE. HEX WRENCH SIZE IS 5/16 INCH.
2. REMOVE AND CAREFULLY STORE THE CHOCKFAST RETAINER (ITEM 2).
NOTE:
THE THREE SET SCREWS (ITEM 3) INSTALLED IN THE CHOCKFAST RETAINER BETWEEN THE CAP SCREWS
ARE PROVIDED AS JACKING SCREWS TO FACILITATE REMOVAL OF THE CHOCKFAST RETAINER IF
NECESSARY. SET SCREW WRENCH SIZE IS 1/4 INCH. THE CAP SCREWS (ITEM 1) HAVE THE
SAME THREAD SIZE AND CAN ALSO BE USED AS JACKING SCREWS.
3. PRIOR TO INSTALLATION OF THE FIN ACTUATOR ASSEMBLY INTO THE HULL INSERT, THOROUGHLY
CLEAN, DEGREASE AND PROTECT FROM SUBSEQUENT CONTAMINATION, THE INSIDE DIAMETER OF
THE HULL INSERT AND LOWER END OF THE FIN ACTUATOR ASSEMBLY HOUSING.
NOTE:
A NONALCOHOL CLEANER THAT LEAVES NO RESIDUE IS REQUIRED FOR DEGREASING PRIOR TO APPLYING
3M MARINE ADHESIVE/SEALANT 5200. REFER TO RELATED DOCUMENT: 3M MARINE ADHESIVE/SEALANT 5200
DATASHEET FOR APPLICATION DETAILS.
4. INSTALL THE LARGE O-RING (ITEM 4) INTO THE GROOVE IN THE BOTTOM OF THE MAIN FLANGE OF THE
FIN ACTUATOR ASSEMBLY HOUSING (ITEM 5). THIS O-RING MEASURES 17.50 INCH INSIDE DIAMETER
X 18.50 OUTSIDE DIAMETER X 0.50 INCH CROSS SECTION (445 X 470 X 13 MM).
NOTE
IT MAY BE HELPFUL TO "STICK" THE O-RING IN THE GROOVE WITH RTV SILICONE PRIOR TO INSTALLATION.
:
5
LOCKING NUTS
(REF: UNC THRU-HOLE DESIGN)
5
LOWER BEARING RETAINER
(REF. NAIAD P/N 0575S0044
HEX HEAD
MOUNTING BOLT
(UNC THRU-HOLE)
7
8
FIN ACTUATOR
ASSEMBLY HOUSING
4
HOUSING O-RING
4
HEX NUT (REF: METRIC THRU-HOLE)
6M
10
)
3
WEDGE LOCK WASHERS
(METRIC THRU-HOLE
DESIGN)
21
ECN DATE BY / APPROVEDDESCRIPTIONZONE REV.
A
2503
0575D0128 WAS 0720D0128 (REF. ALL SHEETS 1-4).
ADDED AXIAL DIMENSION TO CHOCKFAST DAM HEIGHT &
B
2664
APPROXIMATE VOLUME OF CHOCKFAST NOTE 8
C
2804
ADD OPTIONS FOR STEEL/ALUM FLANGES, THRU OR M24,
REM'D "CUSTOMER SUPPLIED HARDWARE" & "MUST BE SAE
GRADE 8 OR BETTER", ADD HHCS & NUT SPEC'S, ZN PL REQ.,
& MIN. HHCS THREAD LENGTH.
D3048
ADDED LONG LENGTH.
E
REMOVED THREADED HULL INSERT OPTION & PLUG WELDING
F
REPLACED POTENTIOMETER WITH NON-CONTACT FEEDBACK
REVISIONS
JWF / CPE16 OCT 09
JPZ / JWF22 FEB 10
16 AUG 13 JWF / CPE
29 AUG 14 MJW / CPE
16 JAN 2017 CPE / MJW
15 JAN 2018 CPE / MJW
D
11
CHOCKFAST RETAINER O-RING
(REF. NAIAD P/N 0575S0023
HEX HEAD
7M
MOUNTING BOLT
(METRIC THRU-HOLE)
)
C
5. SUPPORT THE FIN ACTUATOR ASSEMBLY WITH THREE OR MORE 1.00 INCH-8 THREADED LIFTING
EYES (ITEM 10, PROVIDED BY NAIAD). DO NOT
THE LIFTING EYES WILL FIT THE FOUR TAPPED JACKING HOLES IN THE MAIN FLANGE OF THE
FIN ACTUATOR ASSEMBLY HOUSING. THE LIFTING EYES MUST BE FULLY SEATED PRIOR TO LIFTING
SO THAT THE FLANGE OF THE LIFTING EYE IS FIRMLY IN CONTACT WITH THE SURFACE INTO WHICH IT
IS THREADED. DO NOT LIFT WITH THE LIFTING EYES AT AN ANGLE OF MORE THAN 45 DEGREES FROM
VERTICAL. SEE LIFTING EYE INSTRUCTIONS (0575D0128) FOR INSTRUCTIONS ON USE OF LIFTING EYES.
6. GENTLY GUIDE THE FIN ACTUATOR ASSEMBLY (ITEM 5) INTO THE HULL INSERT AT THE PROPER
ORIENTATION AND POSITION. ALIGN THE HOLES IN THE FIN ACTUATOR HOUSING MAIN FLANGE WITH
THE MOUNTING HOLES IN THE HULL INSERT (ITEM 6). CONTINUE TO SUPPORT THE WEIGHT OF THE
FIN ACTUATOR ASSEMBLY UNTIL AT LEAST 2 FASTENERS ARE INSERTED THROUGH THE HULL INSERT
AS DESCRIBED IN SUBSEQUENT STEPS.
7. APPLY A REMOVABLE GRADE THREAD ADHESIVE/SEALANT SUCH AS LOCTITE 242 TO THE EXTERNAL
THREADS ON THE FASTENERS (ITEMS 7, 8).
INSERT ONE OF THE FASTENERS INTO A CONVENIENTLY
LOCATED MOUNTING HOLE AND ALIGN WITH THE HOLE IN THE HULL INSERT (ITEM 5). INSERT THE
B
FASTENER THROUGH THE HULL INSERT, THROUGH THE FIN ACTUATOR ASSEMBLY FLANGE, AND
THREAD INTO A MOUNTING NUT (ITEM 6 OR 6M) ABOVE THE ASSEMBLY FLANGE. INSTALL A SECOND BOLT
INTO A SECOND HOLE OPPOSITE THE FIRST INSTALLED BOLT AND ALIGN IT WITH THE HOLE IN THE HULL INSERT.
INSERT THE SECOND BOLT THROUGH THE HULL INSERT, AND THEN THREAD INTO A MOUNTING NUT.
INSTALL THE OTHER 6 BOLTS IN THE SAME MANNER AND TIGHTEN ALL FASTENERS UNTIL FULLY SEATED.
TORQUE THE BOLTS ACCORDING TO THE HARDWARE CHART.
[REF: "HHCS " = HE X HE AD CAP S CRE WS]
HULL INSERT
DESIGN MATERIAL DES CRIPTION SPECIFICATION QTY DESCRIPTION SPECIFICATION QTY
THRU -HOL E 8
A
ATTEMPT TO USE A METRIC-THREADED SUBSTITUTE.
NOTE:
THE ORIENTATION MAY BE SUCH THAT THE BOLTS ARE
INSTALLED FROM THE TOP, AND THE NUTS & WASHERS WOULD BE LOCATED UNDERNEATH THE
HULL INSERT FLANGE.
STEEL
1.50 INCHES [38 MM]
ALUMINUM
1.94 INCHES [49.3 MM]
CUSTOMER SUPPLI ED HARDW ARE (ALL ZINC PLAT ED); FINAL T O RQUE = 400 FT-LB (540 Nm )
HHCS, 1.00-8.00 X 4.75 LG SAE J429 GR. 8 8
HHCS, 1.00-8.00 X 5.50 LG SAE J429 GR. 8 HHCS, M24 X 3 X 130 LG DIN 931/ISO 4014-10.9
**HEX LOCKING NUT, 1.00-8 SAE J995 GR. 8
ALL QUANTITY (QTY) VALUES BASED ON 1 FIN ACTUATOR ASSEMBLY
METRIC (mm)- 54mm MIN. THREAD LENGTH ON HHCSUNC (INCH) - 2.25 INCHE S MIN. THREAD LENGTH ON HHCS
8
8 HEX NUT, M24 X 3 DIN 934-10 8
WEDGE WASHER, M24 NORD LOCK NL-24 8
(CONTINUED ON NEXT SHEET)
8
6
HULL INSERT
MATERIAL FLANGE THICKNESS "T"
STEEL 1.50 [38.1]
ALUMINUM 1.94 [49.2]
1/2-13 X 2.50
FLAT HEAD SCREW
(REF. NAIAD P/N 9000U1887
BOTTOM VIEW
LOWER BEARING RETAINER
BOTTOM VIEW
CHOCKFAST RETAINER
TAPPED HOLES (3)
DIN 931/ISO 4014-10.9HHCS, M24 X 3 X 120 LG
8
67
FOR CHOCKFAST RETAINER
JACKING SCREWS
(REF. NAIAD P/N 9000U1670
7/16-20 CHOCKFAST
APPLICATION HOLES
(1 OF 3 @ LOWEST POINT)
5
1
)
15°
(REF)
15°
)
15°
EXPORT CONTROL:
THESE COMMODITIES, TECHNOLOGY OR SOFTWARE MAY ONLY BE
EXPORTED FROM THE UNITED STATES IN ACCORDANCE WITH THE EXPORT
ADMINISTRATION REGULATIONS. DIVERSION CONTRARY TO U.S. LAW IS
PROHIBITED.
NOTICE:
THE INFORMATION CONTAINED ON THIS DRAWING IS CONSIDERED
PROPRIETARY AND DISCLOSURE TO OTHERS, IN WHOLE OR IN PART, IS
PROHIBITED WITHOUT WRITTEN APPROVAL FROM NAIAD DYNAMICS US, INC.
4
TEMPORARY CHOCKFAST DAM
9
BY INSTALLER
CHOCKFAST RETAINER (PVC)
2
(REF. NAIAD P/N 0575A0088
1/2-13 SET SCREW
3
(REF. NAIAD P/N 9000U1835
MOUNTING SCREWS (12 ), FOR
MOUNTING LOWER BEARING RETAINER
TO FIN ACTUATOR ASSEMBLY HOUSING.
PREASSEMBLED BY NAIAD.
DO NOT REMOVE!
Ø0.521 CLEARANCE HOLES (QTY=6)
FOR CHOCKFAST RETAINER MOUNT.
CLEARANCE HOLES (6)
FOR MOUNTING THRU
LOWER BEARING RETAINER
TO FIN ACTUATOR HOUSING
W/ 1/2-13 F.H.C.S. (QTY=6)
)
DIMENSIONS ARE IN INCHES
MILLIMETERS ARE SHOWN IN [ ]
TOLERANCES: INCH
FRACTIONAL ..........
.XX DECIMAL ..........
.XXX DECIMAL .......
ANGULAR ...............
BREAK SHARP EDGES 0.005 - 0.015 R MAX
SURFACE FINISH ...
THIRD ANGLE PROJECTION
)
UNLESS OTHERWISE NOTED
DO NOT SCALE DRAWING
3
CAUTION:
THE CHOCKFAST RETAINER IS MADE FROM PVC PLASTIC, PROVIDING A LIGHTWEIGHT,
CORROSION RESISTANT SEAWATER BARRIER.
THE FOLLOWING PRODUCTS CANNOT
BE USED WITH PVC:
-THREAD LOCKING COMPOUND, SUCH AS LOCTITE
-SIKA-FLEX 291 MARINE GRADE ADHESIVE/SEALANT
THESE PRODUCTS CONTAIN SUBSTANCES THAT WILL REACT WITH PVC, CAUSING
STRESS FRACTURES. WHEN INSTALLING AND SEALING THE CHOCKFAST RETAINER, USE
ONLY THE PRODUCTS LISTED IN THE INSTRUCTIONS. BEFORE USING ANY OTHER
PRODUCT, CONSULT WITH NAIAD OR THE PRODUCT MANUFACTURER TO ENSURE
COMPATIBILITY WITH PVC PLASTIC.
IMPORTANT WARNING:
THE ILLUSTRATIONS SHOWN ON THIS DRAWING ARE TYPICAL HULL REINFORCEMENT
STRUCTURES AND MATERIALS, AND ARE INTENDED AS A GENERAL GUIDE ONLY.
EACH VESSEL'S REINFORCEMENT STRUCTURE MUST BE CONSIDERED A UNIQUE
DESIGN DUE TO THE VARIETY OF FORCES DISTRIBUTED TO THE HULL RESULTING
FROM VARIOUS INDIVIDUAL VESSEL PARAMETERS. THESE PARAMETERS INCLUDE,
BUT ARE NOT LIMITED TO , THE SPECIFIC ACTUATOR MODEL AND FIN SIZE AND THEIR
LONGITUDINAL AND TRANSVERSE LOCATION, THE MAXIMUM OPERATING SPEED OF
THE VESSEL, THE VESSEL DISPLACEMENT, CENTER OF GRAVITY, TRANSVERSE AND
LONGITUDINAL METACENTER, HULL FORM, PURPOSE AND USAGE, ROLLING AND
PITCHING TENDENCIES AND FORCES, AS WELL AS ADJACENT EQUIPMENT,
STRUCTURES AND UNDERWATER APPENDAGES. IN ADDITION, EXTRAORDINARY
FORCES CAN RESULT WHEN THE STABILIZER FINS ARE NOT HYDRAULICALLY
CENTERED DURING AN ASTERN MANEUVER. THE POSSIBILITY OF THE FIN STRIKING
AN UNDERWATER OBJECT AND THE POSSIBILITY OF THE VESSEL RUNNING AGROUND
MUST ALSO BE CONSIDERED WHEN DESIGNING HULL STRUCTURES.
NAIAD ENGINEERS CAN PROVIDE LOAD INFORMATION FOR ANY NAIAD MODEL FIN AND
FIN ACTUATOR ASSEMBLY COMBINATION. RESPONSIBILITY FOR HULL STRUCTURES
AS WELL AS FOR SEEKING CLASSIFICATION APPROVAL RESTS WITH THE
SHIPBUILDER, NAVAL ARCHITECT, OR INSTALLER.
7
SEE ALSO INSTALLATION HANDBOOK 0525M0124
.XXX
.X
.XX
± 0.03
± 0.03
± 0.010
± 0.50° (30')
125
DRAWN
J. FRUIN 08 APR 09
CHECKED
[mm]
JRF/CE 15 APR 09
± 0.8
± 0.25
APPROVED
± 0.130
JWF 16 APR 09
PROJECT:
_
DATE
DATE
DATE
Naiad Dynamics US, Inc.
Shelton, Connecticut, USA
INSTALLATION DRAWING
MODEL 575 ACTUATOR
METAL HULL, WITH CHOCKFAST
SIZE
CODE IDENT NO.
D
5JNL2 F
SCALE: NONE
DWG NO.
0575D0038
12
B
A
REV.
SHEET 3 OF 4
Page 64
8
76
INSTALLATION AND CHOCKFAST PROCEDURE (CONTINUED):
8. INSTALL CHOCKFAST ACCORDING TO THE CHOCKFAST TECHNICIANS INSTRUCTIONS. THE CHOCKFAST
TECHNICIAN'S TRAINING AND EXPERIENCE SHOULD OVERRIDE ANY DESCRIPTION HERE OF THE
CHOCKFAST INSTALLATION. THIS STEP IS MEANT TO BE A GUIDE ONLY AND NOT REQUIREMENTS.
D
C
B
A
THE INSTALLATION WILL GENERALLY INCLUDE THE FOLLOWING STEPS:
INSTALL THE CHOCKFAST RETAINER O-RING (ITEM 11) ONTO THE EXTERIOR GROOVE OF THE LOWER SEAL RETAINER.
MAKE A TEMPORARY DAM (ITEM 9) AND INSTALL IT BETWEEN THE HULL INSERT AND THE FIN
ACTUATOR HOUSING AT THE LOWEST EXTREME OF THE CHOCKFAST CAVITY. HEIGHT OF DAM SHOULD BE
1.06 - 1.19 INCHES [27 - 30 MM]. THE TECHNICIAN MAY APPLY A RELEASE AGENT TO SURFACES ON WHICH THE
CHOCKFAST SHOULD NOT ADHERE SUCH AS THE CHOCKFAST RETAINER.
TEMPORARILY RE-INSTALL THE CHOCKFAST RETAINER USING THREE OF THE FLAT HEAD SCREWS SO IT IS FLUSH
AGAINST THE LOWER BEARING RETAINER. INSTALL TWO SCREWS SO THEY ARE HAND TIGHT.
AT LEAST ONE OF THE THREE 7/16-20 TAPPED HOLES FOR CHOCKFAST INPUT SHOULD BE AT THE LOWEST POINT.
WITHOUT DAMAGING THE INTERNAL THREADS OF THIS LOWEST 7/16-20 TAPPED HOLE,
DRILL A 0.375 IN. [9.50 MM] DIAMETER HOLE THROUGH THE TEMPORARY DAM.
CLEAN OFF ANY RESIDUE FROM THE DRILLING.
INSERT A 0.25 - 0.38 IN. [7-9 MM] DIAMETER FILLER PIPE (CUSTOMER SUPPLIED) THROUGH THE LOWEST
7/16-20 TAPPED HOLE IN THE CHOCKFAST RETAINER. A HAND PUMP OR PNEUMATIC CAULKING GUN
MAY BE USED TO PUMP THE CHOCKFAST THROUGH THE FILLER PIPE. FOUR VENT HOLES (1/8 NPT) HAVE
BEEN MACHINED THROUGH THE HOUSING FLANGE. EACH VENT HOLE CONTAINS A 90° ELBOW FITTING
WITH A 1/8 NPT PLUG.
OF THE FOUR VENT LOCATIONS, REMOVE THE 1/8 NPT PLUG FROM THE 90° FITTING DETERMINED TO BE AT THE
HIGHEST LEVEL (ABOVE WATER LINE). REPLACE THIS 1/8 NPT PLUG WITH THE NAIAD SUPPLIED PIPE-TO-HOSE ADAPTER.
ATTACH Ø1/4" ID TUBING TO THE ADAPTER, AND ALLOW THE FITTINGS AT THE REMAINING THREE LOCATIONS TO BE PLUGGED.
IT IS THE RESPONSIBILITY OF THE CHOCKFAST TECHNICIAN TO ENSURE THAT THE CHOCKFAST CAVITY
(1.1 US GAL, 4.0 LITERS [STANDARD LENGTH] OR 1.4 US GAL, 6.4 LITERS [ LONG LENGTH]) IS COMPLETELY
FILLED WITH CHOCKFAST ORANGE. ALLOW CHOCKFAST TO CURE FULLY
AFTER CURING, THE CHOCKFAST RETAINER AND CHOCKFAST DAM ARE REMOVED AND 3M 5200
MARINE ADHESIVE/SEALANT IS APPLIED WHERE THE TEMPORARY DAM WAS REMOVED. THE SPACE
LEFT BEHIND AFTER REMOVAL OF THE TEMPORARY CHOCKFAST DAM MUST BE COMPLETELY FILLED
WITH SEALANT. THE CHOCKFAST RETAINER AND FASTENERS MUST BE INSTALLED ACCORDING TO
THE NEXT STEP BEFORE THE SEALANT CURES.
9. INSTALL CHOCKFAST RETAINER AND ENSURE IT IS FULLY SEATED. CAREFULLY CLEAN OUT ALL
FASTENER HOLES, REMOVING ANY CHOCKFAST AND ADHESIVE/SEALANT. LIBERALLY COAT THE
THREADS AND THE SHANKS UNDER THE BOLT HEADS ON THE FASTENERS (ITEM 1) WITH 3M 4200
MARINE ADHESIVE/SEALANT (SEE CAUTION BELOW). THE PURPOSE IS TO PREVENT WATER
INTRUSION AROUND THE FASTENERS, THEREFORE AN AMPLE AMOUNT OF SEALANT SHOULD BE USED.
INSTALL THE SIX FASTENERS AND TORQUE TO 25 FOOT POUNDS (30 NM) USING A CRISSCROSS
TORQUING PATTERN FOR EVEN LOADING. WIPE AWAY ANY EXCESS SEALANT.
10. COAT THE THREE 1/2-13 SET SCREWS (ITEM 3) AND THE THREE 7/16-20 SET SCREWS (FOR THE FILL
HOLES) WITH 3M 4200 (NOT 5200) AND THREAD THEM INTO THE THREADED HOLES IN THE
CHOCKFAST RETAINER UNTIL THEY ARE FLUSH WITH THE OUTER SURFACE. SEAL ALL SEAMS
AROUND THE CHOCKFAST RETAINER WITH 3M 4200 MARINE ADHESIVE/SEALANT. (SEE CAUTION BELOW)
CUT THE Ø1/4" ID TUBING AT THE LOWEST POINT NEAREST THE PIPE-TO-HOSE ADAPTER.
REFER TO RELATED DOCUMENTS:
CHOCKFAST ORANGE TECHNICAL BULLETINS
3M MARINE ADHESIVE/SEALANT 5200 DATASHEET
3M MARINE ADHESIVE/SEALANT 4200 DATASHEET
BEFORE STARTING IT IS SUGGESTED THAT YOU ARRANGE TO HAVE THE CHOCKFAST INSTALLED BY AN "APPROVED
CHOCKFAST TECHNICIAN". LOCAL CHOCKFAST DISTRIBUTORS HAVE "CERTIFIED CHOCKFAST TECHNICIANS" THAT CAN
INSTALL CHOCKFAST AND CAN ALSO TRAIN "APPROVED CHOCKFAST TECHNICIANS", WHICH HAVE THE PROPER EQUIPMENT
AND TRAINING TO PROPERLY INSTALL CHOCKFAST. CONTACT ITW ENGINEERED POLYMERS TO LOCATE LOCAL DISTRIBUTORS:
ITW ENGINEERED POLYMERS N.A.
130 COMMERCE DRIVE
MONTGOMERYVILLE, PENNSYLVANIA 18936 USA
Tel. 215-855-8450
Fax. 215-855-4688
http://www.chockfast.com
PER MANUFACTURER'S RECOMMENDATIONS.
IMPORTANT WARNING:
THE ILLUSTRATIONS SHOWN ON THIS DRAWING ARE TYPICAL HULL REINFORCEMENT STRUCTURES AND MATERIALS,
AND ARE INTENDED AS A GENERAL GUIDE ONLY.
EACH VESSEL'S REINFORCEMENT STRUCTURE MUST BE CONSIDERED A UNIQUE DESIGN DUE TO THE VARIETY OF
FORCES DISTRIBUTED TO THE HULL RESULTING FROM VARIOUS INDIVIDUAL VESSEL PARAMETERS. THESE
PARAMETERS INCLUDE, BUT ARE NOT LIMITED TO , THE SPECIFIC ACTUATOR MODEL AND FIN SIZE AND THEIR
LONGITUDINAL AND TRANSVERSE LOCATION, THE MAXIMUM OPERATING SPEED OF THE VESSEL, THE VESSEL
DISPLACEMENT, CENTER OF GRAVITY, TRANSVERSE AND LONGITUDINAL METACENTER, HULL FORM, PURPOSE AND
USAGE, ROLLING AND PITCHING TENDENCIES AND FORCES, AS WELL AS ADJACENT EQUIPMENT, STRUCTURES AND
UNDERWATER APPENDAGES. IN ADDITION, EXTRAORDINARY FORCES CAN RESULT WHEN THE STABILIZER FINS ARE
NOT HYDRAULICALLY CENTERED DURING AN ASTERN MANEUVER. THE POSSIBILITY OF THE FIN STRIKING AN
UNDERWATER OBJECT AND THE POSSIBILITY OF THE VESSEL RUNNING AGROUND MUST ALSO BE CONSIDERED
WHEN DESIGNING HULL STRUCTURES.
NAIAD ENGINEERS CAN PROVIDE LOAD INFORMATION FOR ANY NAIAD MODEL FIN AND FIN ACTUATOR ASSEMBLY
COMBINATION. RESPONSIBILITY FOR HULL STRUCTURES AS WELL AS FOR SEEKING CLASSIFICATION APPROVAL
RESTS WITH THE SHIPBUILDER, NAVAL ARCHITECT, OR INSTALLER.
5
4
3
ECN DATE BY / APPROVEDDESCRIPTIONZONE REV.
SEE OTHER SHEETS FOR REVISION HISTORY
21
REVISIONS
SEE DETAIL "E"
REMOVE PLUG
FROM HIGHEST OF 4
FITTING LOCATIONS
REPLACE WITH
PIPE-TO-HOSE ADAPTER
(QTY=1)
D
10
LIFTING EYES
45° ELBOW FITTING
THROUGH-HOLE FLANGE
MOUNT CONFIGURATION
(SEE SHEET 3)
INSTALLER SUPPLIED
FILLER PIPE AT LOWEST POINT
TO INSURE CHOCKFAST CAVITY
IS FILLED COMPLETELY
MONITOR
CHOCKFAST
LEVEL
SEE DETAIL "D"
Ø1/4" ID TUBING (REF. NAIAD P/N 9000H1895R);
USE AS SIGHT GAGE TO
ENSURE CHOCKFAST FILLS ENTIRE VOLUME
BETWEEN ACTUATOR HOUSING AND HULL INSERT.
WHEN CHOCKFAST CURES,
CUT TUBING AT LOWEST POINT.
LOWER BEARING
RETAINER
FIN SHAFT SEALS
SEALANT
(BY NAIAD)
DETAIL "E"
FIN ACTUATOR ASSEMBLY HOUSING
CHOCKFAST ORANGE
(INSTALLER SUPPLIED)
HULL INSERT
TEMPORARY DAM
(INSTALLER SUPPLIED)
C
5
6
9
B
LOWER FITTINGS
REMAIN PLUGGED
FIN SHAFT
LOWER
SEAL
RETAINER
CHOCKFAST RETAINER SCREWS (NAIAD SUPPLIED)
1
(REF. NAIAD P/N 9000U1887
2
CHOCKFAST RETAINER (NAIAD SUPPLIED)
(REF. NAIAD P/N 0575A0088
B
1.06 - 1.19
[27 - 30 MM]
HULL
FILLER PIPE
(INSTALLER SUPPLIED)
)
)
DETAIL "D"
7
SEE ALSO INSTALLATION HANDBOOK 0525M0124
CHOCKFAST FILLS
GAP BETWEEN
HOUSING
& HULL INSERT
678
5
EXPORT CONTROL:
THESE COMMODITIES, TECHNOLOGY OR SOFTWARE MAY ONLY BE
EXPORTED FROM THE UNITED STATES IN ACCORDANCE WITH THE EXPORT
ADMINISTRATION REGULATIONS. DIVERSION CONTRARY TO U.S. LAW IS
PROHIBITED.
NOTICE:
THE INFORMATION CONTAINED ON THIS DRAWING IS CONSIDERED
PROPRIETARY AND DISCLOSURE TO OTHERS, IN WHOLE OR IN PART, IS
PROHIBITED WITHOUT WRITTEN APPROVAL FROM NAIAD DYNAMICS US, INC.
4
UNLESS OTHERWISE NOTED
DIMENSIONS ARE IN INCHES
MILLIMETERS ARE SHOWN IN [ ]
TOLERANCES: INCH
FRACTIONAL ..........
.XX DECIMAL ..........
.XXX DECIMAL .......
ANGULAR ...............
BREAK SHARP EDGES 0.005 - 0.015 R MAX
SURFACE FINISH ...
THIRD ANGLE PROJECTION
DO NOT SCALE DRAWING
± 0.03
± 0.03
± 0.010
± 0.50° (30')
125
.XXX
.X
.XX
3
DRAWN
J. FRUIN 08 APR 09
CHECKED
[mm]
JRF/CE 15 APR 09
± 0.8
± 0.25
± 0.130
JWF 16 APR 09
PROJECT:
_
DATE
DATE
DATE
Naiad Dynamics US, Inc.
Shelton, Connecticut, USA
INSTALLATION DRAWING
MODEL 575 ACTUATOR
METAL HULL, WITH CHOCKFAST
CODE IDENT NO.
SIZE
D
5JNL2 F
SCALE: NONE
DWG NO.
0575D0038
12
A
REV.
SHEET 4 OF 4
Page 65
SECTIONII
DATUM™STABILIZERROLLCONTROL
OPERATINGINSTRUCTIONS
USA UnitedKingdom Netherlands France AsiaPacific
Connecticut Southampton Maastricht LaCiotat Perth,Australia
+12039296355 +44(0)2392539750 +31(0)436049200 +33(0)486060005 +61(0)451699676
Maryland
+13016902010
Florida
+19547977566
www.naiad.com
sales@naiad.com
service@naiad.com
Page 66
TABLEOFCONTENTS
SectionI GENERALDESCRIPTION PAGE
INTRODUCTION................................................................................................................................................1‐1
OVERVIEW:DATUMROLLSTABILIZERCONTROLSYSTEM............................................................................1‐1
DATUMCOMPONENTS....................................................................................................................................1‐4
SectionII SYSTEMOPERATION
TOUCHSCREENGRAPHICALDISPLAYSCREENS..............................................................................................2‐1
GeneralUseofFunctionKeys&TouchScreenCommands...................................................................2‐1
StartUpScreen............................................................................................................................... .........2‐2
Main(StabilizerControl)Screen.............................................................................................................2‐2
SystemMenu...........................................................................................................................................2‐3
PowerPackControlScreen.....................................................................................................................2‐4
System
SensitivityScreen.....................................................................................................................................2‐6
FinLimitingScreen..................................................................................................................................2‐8
FinLimitingMod e s..................................................................................................................................2‐8
MarineGearScreen................................................................................................................................2‐11
AlarmsScreen..........................................................................................................................................2‐13
StandardAlarmConditions.....................................................................................................................2‐14
STARTUPPROCEDURE......................................................................................................................................2‐15
SHUTDOWNPROCEDURE................................................................................................................................2‐16
TEMPORARYCOMMISSIONINGPASSWORD..................................................................................................2‐17
IMPORTANTOPERATIONAL WARNINGS.........................................................................................................2‐18
MANEUVERING................................................................................................................................................2‐19
OPERATINGMOD ES.........................................................................................................................................2‐19
Off............................................................................................................................................................2‐19
CenterByUser.........................................................................................................................................2‐20
CenterBySpeed.......................................................................................................................................2‐20
Center
AtSpeed............................................................................................................................... .....................2‐22
Adaptive............................................................................................................................... ....................2‐23
AtRest.......................................................................................................................................................2‐24
FinLimitingMod e s..................................................................................................................................2‐25
SectionIII INSTALLATIONNOTES
GENERALELECTRICALINF ORMATION.............................................................................................................3‐1
ELECTRICALBONDING......................................................................................................................................3‐1
TROUBLESHOOTING.........................................................................................................................................3‐1
RunTime.....................................................................................................................................2‐5
ByGear.........................................................................................................................................2‐21
Page 67
GENERALDESCRIPTION
INTRODUCTION
A. Roll
Ofthevariousmotionstheseamayimposeonafreelyfloatingvessel,itisrollthattypicallycauses
thegreatestdiscomfortandconcern.Poweredboatsover30feet(10 meters)inlengthcanbemade
considerablymorecomfortableforpassengersandcrewandmoresecure
forcargoandequipment
bydecreasingrollingmotion.
Eachvesselhasitsownrollperioddeterminedbyitshullshape, displacement,dimensions,weight
distribution and other factors.Roll is of greatest concern when wave periods are close to the
vessel’snaturalrollperiodor“resonantfrequency”.Intheseconditionsand
unlesscorrectiveaction
istaken,therollingmotionofavesselcanincreasetounacceptableorevendangerouslevels.Roll
may result in not only crew and passenger fatigue and seasickness, but also personal injury and
damage to thevessel orits cargo.Otherdetrimental results ofthe inefficiencies ofa
rolling boat
include increased yaw and steering effort, lower speed, decreased fuel economy and greater
structuralstressonthehull.
B. NAIAD®ActiveFinStabilization
TheActiveFinRollStabilizerSystemcounteractsthetendencyofavesseltorollbyapplyinganequal
andoppositerightingmomentinexactly
therightphaseandproportion.Thiscounteractingrighting
moment istypicallyproduced bya pairof hydrodynamicallyefficient fins mounted both portand
starboard approximately amidships and well below the waterline.The fins rotate together as
necessary(both clockwiseor both counterclockwise)tocreatethe forcesneeded to neutralizethe
vessel’s
rollingmotion.Theresultismuchgreatercomfort forpassengersandcrew,lessstresson
thehull andimprovedfuel efficiencysince thevessel canmaintain a straightercoursewith fewer
ruddercorrections.
In addition to the thousands of ship sets of roll stabilizers supplied directly by NAIAD, this
stabilization
equipment benefits from the unrivaled expertise and cooperation of our jointly
owned and affiliated companies of Naiad Maritime Group.Naiad Maritime Group includes
stabilizationleadersNaiadDynamicsUS,NaiadDynamicsHolland,andNaiadDynamicsUK.Naiad
MaritimeGroupstabilizationequipment is activeonmorethan14,000 ships, has beensupplied
to 55 of the world’s navies, including to US Navy advanced hull forms, and is operating on
hundreds of fast ferries including catamarans, trimarans, SWATHs and SES. Through extensive
research and development and unparalleled field experience, Naiad Maritime Group acquired
unique and extensive knowledge and has perfected its capabilities in stabilization
and Ride
ControlTechnology.
OVERVIEW‐DATUMROLLSTABILIZERCONTROLSYSTEM
A. NAIAD®StabilizerSystemCo mponents
The NAIAD Active Fin Roll Stabilizer System includes the electronic components of the advanced
fully‐digitalDATUMthree‐termrollstabilizationcontrolsystem,themechanicalcomponentsofthe
finsandfinactuatorassembliesand thehydraulicsystemcomponents such as thepumps,control
manifoldsandservovalves,cylinders,fluidconditioningreservoirassembly,etc.
1‐1
Page 68
GENERALDESCRIPTION
B. DATUMandCANbus
The DATUM Roll Stabilizer Controller represents decades of experience in ship roll stabilization
technologyincorporating unique understanding of and experiencewiththepractical applicationof
yachtstabilizationcontroltechnology.TheDATUMistheworld’sfirstpurelydigitalthree‐term(Roll
Angle,Roll Velocity, and RollAcceleration)
stabilizercontrolsystemusing adaptivetechnologyand
operatingonadistributednetworkusingaprovenand high lyreliableCAN (C ont rol le rAreaNetwork)
bus.
TheDATUMthree‐termsystemprovides maximumroll dampingeffectivenessinall sea directions,
including following seas, as well as providing correction of list and rudder‐induced
heel.The
advanced CANbus system architecture is ideally suitedfor high‐speedmotion control applications
andisrelieduponextensivelyinaerospace,railway,automotiveandotherperformance‐drivenand
reliability‐criticalapplications.Theeasilyexpandabledist ributedcontrollerminimizescablerunsand
space consumption, while enhancing mounting and configuration flexibility.Designed
for ease of
installation and operation and providing maximum control and performance with minimal
complexity,theDATUMisacleaner,neater,morereliableandhigherperformingyachtrollcontrol
solutionthananyothersystemavailabletoday.
C. DATUMComponents
TheDATUMcontrolsystemincludes one ormore central controlmodules,
avesselmotionsensor
package, precision electro‐hydraulic servo valves and electronic drivers, closed‐loop fin position
feedback,andoneormoreTouchScreenDisplaypanels.
1. TheheartoftheDATUMisthepurelydigitalControlModuleprogrammedwithaproprietary
motion control algorithm based onthose developedby the VTG over decadesof successful
and innovativevessel motion control experience.Thecontrol module featuresa compact,
rugged,marine‐readycase with simple plug‐inconnections, threeconfiguration pushbuttons
anda smallwindow showing systemstatus codes tohelp ininstallationand
commissioning
andneedsnointernaladjustmentsorsetup.
2. The Motion Sensor Package features highly accurate aerospace‐grade multi‐axis and multi‐
termvesselmotionsensorsto determinevesselrollangle, roll velocityandrollacceleration.
Themotionsignalsaremixedandfilteredwithinthecontrolmoduleandtheresultingoutput
signalsaresentto the finactuatorassemblies’electro‐hydraulic closed‐loop servo valves for
preciseandfullyproportionalfinpositionmanagement.
3. The operatorcontrol for theDATUMisafull colorTouchScreenDisplay.The Touch Screen
Display features several user‐friendlyscreens,each withspecific featuresand functionsand
eachwithasetofgraphicaltouchbuttonslogicallyarrangedtoallowtheuserconvenientand
intuitive control over all system functions.From the display, the operator can select the
stabilization mode, monitor system operating status and alarms
and adjust various system
settingsandparametersifdesired,foroptimumperformance.
D. DATUMPerformanceAdjustments
Stabilizer performance may be customized and fine‐tuned with simple sensitivity (‘gain’)
adjustmentsor theDATUM maybe setto thepowerful Adaptivemode.The Adaptive mode isa
standardfeaturethat switches
theDATUM to aself‐learningmode inwhichits sensitivity settings
are automatically and continuously updated to optimize stabilizer performance in varying sea
1‐2
Page 69
GENERALDESCRIPTION
conditionsandvesselheadings.NaiadDynamic’salgorithmforAdaptiverollstab ili zation allowsfora
truehands‐freesystemwithunsurpassedresponseandperformance.
E. StabilizerSystemSizing
Thefins,finactuatorassembliesandhydraulicpowerforthestabilizersystemarespecifiedforeach
applicationbasedon certain vesselparameters such asdisplacement,metacentricheight, physical
dimensionsandoperatingspeeds.NaiadDynamicsapplicationspersonnelusingaspeciallydesigned
selection program can quickly determine the
application.NaiadDynamicsalsoappliesitslonghistoryincludingthousandsofsuccessfulstabilizer
installationstobalancethecalculatedresultswithpracticalandsuccessfulexperience.
F. FinManagement
Thefinsaremodulated by theDATUM throughprecisionelectro‐hydraulicservovalves andclosed
loopfinpositionfeedbackforfullyproportionalandfullyautomaticactuationofeachfinresultingin
smooth,exactstabilizeroperationwithnoobjectionableresponsedeadbandorlag.Theangleoffin
rotation is continuously controlled to exactlymatchthevessel’s rolltendencyto ensure maximum
roll reductionperformance with
moreandnolessthanrequiredforoptimumrollreduction.
G. VesselSpeedInterface
OtherkeyfeaturesoftheDA TUMcontroller(usingavesselspeedsi gn alsuchasfromaGPSorspeed
log) include automatic centering of
whilemaneuvering ormoving astern)and above apre‐sethigh‐speedvalue.Thelatter featureis
essentialforcavitationcontrolduringhigherspeedoperation.TheDATUMwilllimitthefinangleas
afunctionofvessel speedtominimize
pre‐setattheNAIAD factorybutcanbeprogrammedby the commissioningengineer accordingto
theparticularrequirementsofthevessel.Theresultismaximumeffectiverollreductionthroughout
the range of vessel operating speeds with decreased noise and minimum
possibleefficiency.
size of the equipment required for a specific
minimum drag since the fins go to exactlythe correct angle; no
the fins belowa programmable low‐speedvalue (forexample
cavitationand drag.All ofthespeed‐relatedfunctionsare
drag and maximum
1‐3
Page 70
GENERALDESCRIPTION
DATUMCOMPONENTS
A. ControlModule
TheControlModuleisthecentralcomponentoftheDATUMandservesanumberofpurposes.It
housesthe digitalembeddedmicroprocessorthatregistersoperatorinput parametersandmotion
sensordatatodeterminetheproperfinpositioncommandsbasedonthemotionsensors’readings
ofthevessel’srollangle,velocity
andacceleration.Italsocontainsthesignalconditioningalgorithm s
thatdrivetheelectro‐hydraulicservovalvesfor accurate hydrauliccontrol of finposition.Itis the
central controller for the system’s alarm management logic and it serves as a central connection
locationforthevariousothercomponentsofthesystem.
TheinternalcomponentsoftheControlModulearehousedinastrongandcompactcastaluminum
enclosure (rated to IP67) that is sealed against dirt and moisture.For simplest installation, each
color‐coded connector on the ControlModule is completelyunique fromall the others making it
impossibletomisconnect
thecableplugs.
TheControlModuleispre‐setandtestedattheNAIADfactorywithstandardsettingsthatarebased
on typical vessel motion control requirements.Upon commissioning of the DATUM, it may be
necessary to adjust some of the settings for optimum roll stabilizer control.Although not very
complex,theseadjustmentsareintendedtobedonebytheNAIADcommissioningengineerorother
qualifiedandauthorizedNAIADrepresentativetoinsurecorrectandreliablesystemsettings.
B. ColorTouchScreenGraphicalDisplay
The ColorTouch Screen Graphical Display featuresa full color 8inch LCD screen with adjustable
brightness
andseven functionkeys locatedalong the sideof
the display.Any number of Touch Screen Displays can be
installed in the DATUM system without any special
programming or system configuration.They are simply
connected (“teed”)intotheCANbusnetworkatanylocation
for expanded access to system control and
monitoring
functions.AnyTouch ScreenDisplayin thenetwork can be
used to control thesystem andeach displayis continuously
and automatically updated to reflect the current operating
modeandsystemstatus.
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GENERALDESCRIPTION
TheDATUM Touch Screen softwarefeaturesseveraluser‐friendlymenusandscreens,eachwith
specific features and functions. The screens are designed to give the operator control over all
aspectsof DATUMoperation,monitoring and control.Each screenis associatedwith aparticular
sub‐systemof the DATUM and isdesigned
leastcomplexity.
Oneach screen,graphical touch buttons aredisplayed forexecuting commandssuch asadjusting
sensitivity settings,andcontrolling hydraulicpower packs.Detailed logfilesof systemactivityare
compiledbytheDATUM,andcanbesortedinanumber
shutdowntimes,andalarmevents.Thesevenpermanentfunctionkeysalongthesideofthedisplay
allowquicknavigationtoanypartoftheDATUMsoftware.
C. MotionSensorPackage
D. FinPosition
Sensor(FeedbackPotentiomete r)
Eachfinactuatorassemblyfeaturesapotentiometerdirectlycoupledtothefinshafttoindicate
theexactangularpositionofthefinatalltimes.ItssignalisusedbytheDATUMControlModule
in a comparison between the commanded fin position and the actual fin position
proportional fin control.Each fin’s position is indicated on the Touch Screen Display’s main
screen.The combination of the fin position potentiometers, the internal electronics of the
electro‐hydraulic servo valves and the Control Module’s proprietary roll stabilization control
algorithms provides a highly accurate and reliable closed‐loop
system.
to provide the most information andcontrol with the
ofwaystotrackrecordssuchasstartupand
The rugged NEMA 4X (IP66) rated enclosure of the Motion
SensorPackagehousestheDATUM’srollangleandrollvelocity
sensors and is delivered with a pre‐installed and terminated
cable for ease of installation.The aerospace grade sensors
detecttheslightestrollmotionand continuouslytransmittheir
output signals to the Control Module for processing.The
standardunitis
designedforforward‐facingdeckmountingbut
it can also be ordered for any other desired mounting
orientation.The sensors are initially calibrated at the NAIAD
factory but recalibration after installation, if necessary, is a
simpleoperationdonebythecommissioningengineerthrough
theTouchScreenDisplay.
for precise
servo positioning fin control
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SYSTEMOPERATION
TOUCHSCREENGRAPHICALDISPLAYSCREENS
Thissection describes theappearance, navigationand functionalityof the various screens ofthe DATUM
TouchScreenGraphicalDisplay.
GeneralUseofFunctionKeys&TouchScreenCommands
The Touch Screen Displayfeatures sevenfunction keys along theright sidethat areused for
Pressinganyofthefunctionkeys(F1‐F7)willimmediatelydisplayitsassociatedscreen.TheSystemkeyat
thetophasno function.EachofthevariousDATUMscreenswillalsocontaingraphicaltouchscreenbuttons
thatexecutecommandsbytouchingthescreen.
navigation.
Thefunction keyassignments
areas follows:F1=Main Screen,F2=Sensitivity Screen,
F3=FinLimitingScreen,F4=MarineGearScreen,F5=PowerPackScreen,orSystemRun
TimeScreen(dependingonconfiguration)F6=AlarmScreen,F7=OptionsScreen.
Touchingthe F Key Informationbar onthe rightsideofthetouch screenwill display
descriptivetouchbuttons
alongsideeachFkeyasshownattheright.TohidetheFkey
informationbuttons,pressINFOOFFatthetopofthescreen.
The?button,locateddirectlyabovetheFKeyInformationbar,isthehelpcommand,
andwilldisplayusefulinformationpertainingtothecurrentlydisplayed
screen.
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SYSTEMOPERATION
A. STARTUP
Whenelectricalpowerisapp liedtotheDATUMsystem,thegraphicaldisplaywillperformashortself‐
diagnostictestan dthenloadthe database.Whenthisis complete,pressNextandthedisplayadvances
tothedisclaimer.PressingProceedindicatesthatyouhavereadandacceptthe
onthescreenandthedisplayadvancestotheMain(St abili zerControl)screen.
B. MAIN(StabilizerControl)Screen(F1 )
In the upper right and left
areas of the Main screen are
graphical fin angle indicators
showing the instantaneous
angular position of the port
andstarboardfins.Onfour
systems,theaftpairoffinswill
also be displayed below the
forwardfins.
In the central area of the
screen, the vessel speed and
thecurrentmodeofoperation
aredisplayed.Belowthat are
currentsensitivitysettings.
The sensitivity settings are
displayed as a bar graph and
numerical
ADAPTIVEmodeandtheRollANGleandVELocitysensitivitiesinAtRest®mode.Thesevaluesremain
fixedin AtSpeedandAtRestmodesbut will automaticallychangeinADAPTIVEmodeastheDATUM
continuouslyre‐calculatestheiroptimumvaluesforthecurrentvesselheadingandseaconditions.
Belowthesensitivitysettings,aretheoperatingmodeselectionbuttons,andeachwillbedescribed
fullylaterinthismanual.
disclaimerstatement
fin
percentage for the roll ANGle, VELocity and ACCeleration sensitivities in AtSpeed® and
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SYSTEMOPERATION
OPERATINGMODES
OFF
CENTER
AtSpeed(StabilizationUnderway)
ADAPTIVE(Self‐LearningStabilizationUnderway)
AtRest(StabilizationatAnchor)ifequipped
C. SYSTEMMENU(F7)
The System Menu allows
the user to set up the
DATUMdisplayoptionsand
tosetthedateandtime.
BacklightStrengthrefersto
the brightness of the
display.
Six buttons
represent the range of
brightnesssettingsfromthe
dimmestontheleft,tothe
brightest on the far right.
Experiment with the
settings to find the
brightness that suits your
preference.
BacklightOff/Onallowsthe
user tochoose whetherto allowthe screento remainon at alltimes,
by touchingthe AlwaysOn
button,ortosetanintervaloftimetoautomaticallyshutthescreenoffafterthelastcommand.Toset
anautomaticshutoff,touchtheAuto Off In…Secbutton,andusethe–and+buttonstoadjustthe
delaytime(inseconds).
The
date and time can be entered
into the DATUM for display on the
Main Screen and to be used in
creatinglogofeventssuchaspump
start‐upsandshutdowns,andalarm
occurrences. Touch the Set
Date/Time button and the screen
shownattherightwillappear.
Use
the – and + buttons to make
entries for the year, month, day,
hour, minute, and second.The
DATUM clock operates on what is
commonly known as military time,
so a time of 2:30 pm would be
enteredas14hoursand30minutes.
TouchtheSetbuttonwhen the
entriesare complete,andthen touchBacktoreturntotheOptions
Menu.
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SYSTEMOPERATION
D. POWERPACKCONTROLScreen(F5)
Ifthesystemisequippedwithpowerpacksorelectricmotordrivenhydraulicpump s,thePOWERPACK
CONTROLScre enallowstheoper at ortoeasilystartthepump (s)afterthestabilizersystemisenergized.
Thisiscriticaltoavoidoverloadingtheship’selectricalsupply.
Thescreenwilldisplaythestatusofallelectricallycontrolledpumpsinthesystem.TheUpandDown
buttonsallowyoutoscrollthroughthelistofpumps.Whenapumpishighlighted,touchStarttobegin
operatingthepump,orStoptoshutitdown.
TheSTOPALLbuttonallows
individually.Thisshouldonlybedoneintheeventofaseriousleak ,orotheremergencysitu at ion s.
The History button will display
informationabouttheusageofeach
pump.The date and time of each
start
and stop is recorded, and the
data is displayed under three lists,
Occurrence,Frequency, and Total
Time. Use the buttons to sort and
scrollthroughthedat a,andtheReset
button will clear the stored data
whenpressedtwice.TouchtheBack
button to return to the previous
screen.
theuserto shut downallpumpsat once withouthaving to stopthem
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SYSTEMOPERATION
E. SYSTEMRUNTIMEScreen(F5)
Ifthesystemisnotequippedwithpowerpacksorel ectricmotordrivenhydraulicpumps,theSY STEM
RUNTIMEScreenwillbeaddedinplaceofthePowerPackControlscreen.Itdisplaysthetimethe
systemhasspentinvariousmodesofoperation
trackingusageandschedulingmaintenance
Toresetallthetimesbacktozero,presstheRESETbuttontwice.
aswellasthetotalruntime.Thiscanbeusefulfor
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SYSTEMOPERATION
F. SENSITIVITYScreen
TheDATUMisapurelydigital Three‐Term motioncontrol system that incorporates the vessel’sroll
angle,velocityandacceleration(thethree“terms”)intoitscontrollawalgorithmstoprovideoptimum
performance.Oneimp ort antaspectofthecontrollawisthatthecontributionsofthethreetermsmust
vary for
SENSITIVITYscreenallowstheoperatortospecifyhow“sensitive”theDATUMistoeachofthethree
termsby adjusting the contributionof eachto thecontrollaw. Eachofthe threeterms affects the
behavior of the DATUM
aloneorincombinationwiththeothers.
SternquarteringandfollowingseaswhileAtSpeedproducelongslowrollswithsignificantrollangles
andverylowvelocity.IncreasingtheANGLEsensitivityintheseconditionswilldramaticallyreducethe
roll.ANGLEisalsothepredominantcontributorinAtRestmode.
Generally,bow quarteringand beamseas tend to produce higherrollrates (velocity)and,in some
circumstances,substantialroll angles.Insuchconditions,increasingtheVELOCITYsensitivitywillhave
thegreatesteffect.VE LOCITYisgenerallythepredominantcontributorinAtSpeedmode.
In short, choppy, highfrequency wave conditions, such as might be found in harbors, busyinland
waterwaysandalongsomeshorelines,increasingtheAtSpeedACCELERATIONsettingincombination
withtheothertwowil lgivegoodresults.TheAccelerationsettingislimitedtoamaximumof50%.
AtSpeed®SensitivitySettings
optimum roll control in different headings, sea conditions and operating modes.The
differently; each enhancingroll dampingin differentsea conditions either
WhiletheDATUMallowsoperatorstomanuallycontrolsensitivitysettingswhileinAtSpeedmode,
itishighlyrecommendedthatADAPTIVEmodebeusedexclusivelywhilecruising.ADAPTIVEmode
automatically optimizes the sensitivities in varying sea conditions for a truly hands‐free self‐
adjusting roll stabilization system. ADAPTIVE mode is only available while underway as an
alternativetoAtSpeedmode.Ifequipped,AtRestsens itivitysettingsmustbeadjustedmanually.
AsageneralrulewhileoperatingAtSpeed(underwa y)*andelec tingnottouseADAPTIVEmode,the
VELOCITYsettingsh ou ldbebetween3and5timeshigherthantheANGLEsetting.RaisetheVELOCITY
settinginbowquarteringseasandloweritinsternquarteringseas.Increasebothinlargerwaves.
*Forhigherspeedplaninghullscruisingincalmseas,ADAPTIVEmodeandtherulesabovemayprove
overlysensitive.Inthesecases,useanANGLEvalueof40%,aVELOCITYof50%andanACCELERATION
settingof0%asastartingpointforgoodperformance.
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SYSTEMOPERATION
AtRest®(AtAnchor)SensitivitySettings
ThefollowingaretypicalAtRestsett ingsthatmayserveasagoodstartingpoint:
Angle 45%
Velocity 10%
WhileoperatingAtRest, theANGLEsettingshouldbe3to5timeshigherthantheVELOCITYsetting
(notethatthisratioistheoppositeofrecommendedAtSpeedsettings ).Beginningwiththevaluesabove,
theoperatorshouldtrydifferentvariationsof settingsindifferentheadingsandconditionstogetafeel
forwhatworksbest.TheANGLEvalueshouldbeadjustedfi rstwhennecessary,followedbyVE LOCITY .
Increasingbothsettingswillmakesystemresponse“stiffer”,withmoreabruptfinmovementforsmall,
choppywavesofshorterduration.Decreasingbothsetting swillmaketheresp on se “softer”,withmore
prolongedfinmovementforbett er
performanceinlargerwaves.
Note: In AtRest modeonly the ANGLE andVELOCITY terms are applied, as ACCELERATIONhas little
effect,andHEELANGLEisnotcorrectablewhileatrest.
It is important to understand that while adjusting the AtRest Sensitivity settings for one sea
conditionwillimprove performance,leavingthose settings in different conditionscancause the
systemtooverreactandproduceundesirablemotions.Ifthesystemseemstoreacttooabruptly
tovesselmotions,causing a“jerking”effect (possibly accompaniedbynoise), reducetheAtRest
settingsuntiltheabruptreactionssmoothout.
HEEL ANGLE sensitivity (AtSpeed mode only) can beadjusted to allow a staticheel if the vessel is
unevenlyloaded,cruisinginheavywind,etc.Typically,theHeelAngleissetto100%andtheDATUM
positionsthefinsasneededtokeepthevesselstableandlevel.However,thiscomes
attheexpense
ofsomeefficiencysincethefins,tocorrectastaticheel,mustoperate(onaverage)aboutanon‐zero
angleof attack withrespectto the waterflow.Thepenaltyof the associatedinduceddrag canbe
reducedoreveneliminatediftheoperatoriswillingto
toleratesomestaticheelwhileun derway.Th is
isaccomplishedbyreducingtheDATUM’sHEELANGLEsensitivity.Thisisnotthesameasreducingthe
ANGLEsensitivitysinceitiscombined withthe other terms differentlyinthe control lawalgorithm.
ReducingtheHeelAnglesensitivitywilltypicallyresultinfuelsavings
andshorterpoint‐to‐pointtimes,
howevertheHeelAngle sensitivity shouldonly be reduced from 100%forlong,straightpassages
duringwhichturnsandmaneuvering(otherthansmallcoursecorrections)willnotbeexecutedor
anticipated.
BecausetheHeelAnglesensitivityhasaspecificfunctionasexplainedabove,turning
ormaneuvering
withreducedHeelAnglesensitivitycouldresultinprolongedoruncorrectedrollanglewhileexecuting
turns.Thisdoesnotmeanthatthestabilizerismalfunctioning.ItmeansthattheHeelAnglesensitivity
shouldberesetto100%toallowtheDATUMstabilizercontroltorespondtovesselrollnormally.
Tomanuallyadjust the sensitivities,changethevalueusing the–or+buttonsonthe touchscreen.
Notethatthevaluewillnotautomaticallyincreaseifthe–or+buttons are pressed andheld;they
mustbepressedre peated lytomakechanges.
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SYSTEMOPERATION
G. FINLIMITINGScreen
DuringnormaloperationwhileunderwayandinAtSpeed®orADAPTIVEmodes,theDATUMcontrols
theoperationalangleofthefins,from0to100%,asafunctionofvesselspeedandaccordingtothefin
limitingcurve.Atspeedsbelowthelowspeedauto‐centeringthreshold
finanglecapabilityislimitedtozero(i.e.thefinsarecentered).Atnormalcruisingspeeds,between
thelowspeed auto‐centering threshold andtheauto‐limitingthreshold the finshave100%of their
capabilityavailable.Asspeedincreasesfurther,thefinanglecapabilityis
fin angle is needed at higher speeds to produce sufficient lift force to stabilize the vessel while
producingless drag.The FIN LIMITING screen allows theoperatorto control someaspects of the
DATUM’s automaticfin angle limiting featureand to customize the DATUM’s behavior to suit
specificneedsofthevessel.
The finlimiting curve is pre‐programmedat the NAIAD factory with default values but can be re‐
programmedbyaqual ifiedNAIADfactoryrepresent ativeatcommissioning(oratanytime)tooptimize
systemperformanceonapart icularvessel.
Therearetwomodes
selectedbytouchingtheAuto /Manual buttontotogglebetweenthetwomodes.
H. FinLimitingModes
InAutomaticmode,theDATUMreadsthevessel’sspeedfromanNMEA0183signalgenerator(such
asaGPSsystem)
ora200pulsepernauticalmile(ppnm )signalgenerator(suchasananalogspeedlog)
andvariesthefinanglecapabilityaccordingto theFinLimitingcurveprogrammedintotheDATUM.
Thedotonthecurverepresentsthecurrentspeedreadingforthevessel.Thecorrespondingfinangle
capabilityand
speedaredisplayedatoppositecornersoftheg raph.
(exceptinAtRest®mode),the
graduallydecreasedsinceless
the
ofoperationfortheFinLimitingfeature.TheAutomaticandManualmodesare
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SYSTEMOPERATION
InManualmode,theoperatormanuallysetsthespeedvaluetobeusedbytheDATUMbytouching
the–or + buttons to movethedotalongthecurvetothedesired point.Thenumericalvaluesfor
vesselspeedandpercentageoffincapabilityareupdatedasthepointis
movedalong.
TheManualmode isprovidedincasethevessel’sspeedlogsignalhasfailed,beeninterruptedor is
otherwisenotpresent.Inthesecases,thesysteminterpretsthelackofaspeedlogsignalasazero‐
speedsignalandautomaticallycentersthefins.TheManualmodeallows
thesystemtoignorethelack
ofaspeedlogsignalandstillprovideadegreeofstabilizati on.
InManualmode,thesy st emdoesnotacc ountforactualvesselspeedsoitcannotautomaticallycenter
thefinswithlow‐speed.
CAUTION:
WhenthesystemisinManualmode,theoperatormustalwaysremembertoCENTERthefins,by
touchingCENTERonthe MAINscreen, when maneuvering or moving astern.Failure to center
thefinsmaycauseequipmentdamageresultingfromexcessivefinforces.
TheDATUMstillmovesthefinsinresponsetovesselmotions,wheninAtSpeedorADAPTIVEmodes,
butthefinanglecapabilityislimitedtoaMaximumManualCapability.70%istheNAIADfactorydefault
valuebutthiscanbechangedbyaNAIADcertifiedfactoryrepresentative.Thefinangle
capabilityis
limitedtotheMaximumManualCapabilityaslongasthesystem isAtSpeedorADAPTIVEandinManual
FinLimitingmode.
TheDATUMcanbesettoautomaticallyresume,oncethevesselspeedisagainabovetheLowSpeed
Auto‐CenteringThreshold,thelastoperatingmodebeforethe
finswereCENTEREDBySpeed.Touch
theAuto ResumekeytotogglebetweenOnandOfftoindicatewhethertheDATUMwillorwillnot
Auto‐Resume.IfOff,then the operatormustreturn to the MAINscreenandtouchtheAtSpeedor
ADAPTIVEbuttontobeginstabilizingthevesselagain.
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SYSTEMOPERATION
Themost prominent featureof theFIN LIMITINGscreen isthe FinLimiting curve. The verticalaxis
representsfin angle ofattack capability(%)and the horizontalaxis representsvesselspeed(knots).
SomeimportantpointsontheFinLimitingcurveinclude:
• TheLow Speed Auto‐Centering Threshold is
thespeed (3.0knots onthe samplescreenabove)
belowwhichthefinsarecentered(excep tinAtRestmode).Thereisadeadbandof0.5knotsaround
theLowSpeedAuto‐Centeringthreshold(0.25knotsaboveand0.25knotsbelow3knots)toprevent
thesystemfromcontinuouslyalternatingbetweenAtSpeed
andCENTERBySpeedmodesaswould
otherwisehappenifthevesselwereapproachingorkeepingstationwhilewaitingforabridge,for
example.This means that the vessel must slow to below 2.75 knots before the DATUM will
automaticallyCENTERthefinsandspeeduptomorethan3.25
knotsbeforetheDATUMwillallow
thefinstobecomeactiveagain.
• TheAuto‐LimitingThresholdisthespeed(17knotsonthesamplescreen)abovewhichthefinangle
capabilitybeginstobeautomaticallylimited.Thisvalueis setattheNAIADfactorybasedonthe
hydro‐mechanicalratings
ofthest abiliz erfinactuatorassemblies.
• TheMaximumLimited Speedis thespeed (25knotsonthesamplescreen)atwhich the fin has
reacheditsmaximumlimiting,i.e.itsHighSpeedCapability.
• TheLowSpeedCapability(i.e.theangularcapabilityofthefinswhenthevesselspeed
isbelowthe
LowSpeedAuto‐Centeringthreshold)andHighSpeedCapability(i.e.theangularcapabilityofthe
finswhenthevesselspeedisabovethe Auto‐LimitingThreshold)aresetattheNAIADfactoryto
zero.Non‐zerovaluescanbeprog ram medforspecialapplications.
• TheMaximumAutomatic
Capability(factorypre‐setto100%)isthemaximumangularcapabilityof
thefinswhenthevesselspeedisbetweentheLowSpeedAuto‐CenteringthresholdandtheAuto‐
LimitingThreshold.
• TheMaxim umManualCapability(f act ory pre‐setaccordingtothespecificvesselparameters)isthe
maximumangularcapability
ofthefinswhentheDATUMisinManualmode.Limitingthefinangle
capabilitytolessthan100%insomecasesisasafetyprecau ti on intendedtoprotecttheequipment,
thevesselanditscrewfromoverloadingthefinandactuatorassembly.
• TheHigh Speed Capability(factory pre
‐setto 0%) isthe maximum angularcapabilityofthe fins
whenthevesselspeedisabovetheMaximumLimitedSpeed.Non‐zerovaluescanbeprogrammed
forspecialapplicati ons.
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SYSTEMOPERATION
I. MARINEGEARScreen
TheDATUMcanbeconnectedtomarinegear(transmission)interlockswitchessothatthesystemwill
automaticallycenterthefinsformaneuveringormakingste rnway(motoringasternorbackingdown).
TheMARINEGEARscreenallowstheoperatortoseethecurrentstatusoftheswitchesand
andmodifytheireffectonthefunctionalityoftheDATUM.Whenthefincenteringconditions,stated
atthebottomofthescreen,ar esatisfied,thefinswillbeCENTEREDByGear.Theeditablefield sonthe
screenareCentering(AllowedorDisallowed),AutoResume(OnorOff),PORT,
CENTERand/orSTBD
SWITCH(EnabledorDisabled).Theswitchconfigurationwillbesetduringcommissioning.Typically,
singleenginevesselswilluseonlytheCENTERswitchanddualenginevesselswillusethePORTand
STBDswitches.
TheupperleftareaofthescreenshowswhetherautomaticfinCENTERING(i.e.bygear)
isAllowedor
Disallowed.For vessels withno switchesor for troubleshooting and commissioning, automatic fin
CENTERINGmightbeDisallowedwheretransmissionswitchesareignoredcompletely,whetherthey
are installed or not.If there are any switches installed, centering should be allowed.Touch the
CenteringbuttontotogglebetweenAllowed
andDisallowed.
toassess
CAUTION:
Finsmustbe inCENTERwheneverthe vesselismaneuveringormakingsternway(motoring astern
orbackingdown).FailuretoCENTERthefinscancauseseriousdamagetothestabili zersystem.
IfCENTERINGisDisallowed,thefinsmustbeCenteredmanuallyfromtheMAINscreen.
TheSYSTEMheadingat thetopofthescreensh ow sthecurrentsystemoperatingmode.
TheAutoResumefunctionalityfortheMARINEGEARscreenisverysimilartothatontheFINLIMITING
screen.Thefincenteringconditions,statedatthebottomofthescreen,willbecustomprogrammed
by
the CommissioningEngineer afterdiscussionwith thesystemoperator to determinehow these
shouldbesetforaparticularapplication.Whenthecenteringconditionsaresatisfied,thefinswillbe
CENTEREDByGear.Whenthecenteringconditionsareremoved(e.g.allmarinegearinforward),the
systemmayormay
notautomaticallyresume thelastoperatingmodebeforethefinswereCENTERED
ByGear.
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SYSTEMOPERATION
ToggleAutoResumebetweenGearResumeOnandGearResumeOfftoindicatewhethertheDATUM
willorwillnotAuto‐Resume.IfOff,thentheoperat o rmu streturntotheMAINscreenandcommand
theDATUMtobeginstabiliz ingthevesselagain.
For the Port, Center,and Starboardgear, the
corresponding switchcan be individually included or
excluded(electronically)fromthesystem.ScrolltothegearyouwanttoeditbytouchingtheUpand
Downbuttons, then touch either Enable orDisable toeither includeor exclude,respectively, that
gear’sswitch.Disablingcertainswitchesmaybeusefulinisolating
switchesfortroubleshooting.
OneoftheCommissioningEngineer’stasksinsettinguptheDATUMforaparticularvesselistoassign
meaning to the open and closed states of the contacts within the transmission switches and to
configuretheDATUMtoCenterthefinsundertherightcircumstances.Atypicalswitch
usedinthis
applicationhasonlytwostates:contactsopenandcontactsclosed.Sincethetransmissionshavethree
states,forward,neutralandreverse,twoofthetransmission’sstatesmustshareoneoftheswitches
states.Forexample,ifacertainCaptainwantsthefinstoCenterwhenbothmarinegear
arepulled
from forward to neutral, then the switches must be installed so that they change state between
forwardandneutralandthestateoftheswitchinneutralwillbethesameasinreverse.Itdoesnot
matterwhetherthecontactschangefromclosed toopenorvice versa
sincethiscanbeconfigured
withintheDATUM’sprotectedc ommissioningscreens.Ifweassumeinourexamp lethattheswitches
areinstalledsothattheircontactsareclosedinforwardgearandopenwhenthegeararepulledto
neutral,wecanalsoassumethat thecontactsareopenin
reverseaswell.Inthiscasewestatethe
centeringconditionsasFinsCenterWhenALLGearinNeutralandReverse.TheflexibilityoftheDATUM
allowstheCommissioningEngineertoaccommodateanyconfigurationrequestbysettingthesystem
uptoworkwithanycombinationoffincenteringwhenANYor
ALLGearareinNeutralandReverseor
Reverseonly.
IftheCent eringconditionsmustbemetbyALLmarinegearan dallEnabledgearareinn eutral/re ver se
(dependingon configuration),thenthefinswillbeCenteredandtheoperatingmode will change to
CENTERByGear.
IftheCenteringconditionsmaybemetbyANYmarinegearandanyEnabledgearisinneutral/reverse
(dependingon configuration),thenthefinswillbeCenteredandtheoperatingmode will change to
CENTERByGear.
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SYSTEMOPERATION
J. ALARMSScreen
WARNING:CAUTION:
Anyalarmmustbeinvestigatedatonce.Mutingthealarmandcontinuingtooperatethestabilizer
systemwithoutcorrect ingthecauseofthealarmmaydamagethestabilizersystemandcouldcause
personalinjury.
ThestandardDATUMsystemisprogrammedtomonitorsystemparametersandtonotifytheoperator
ifanyoftheparametersgoesintoanalarmcondition.Normally,theALARMSscreenwilldisplayOK
nexttoeachofthesystemparameters.Intheeventofanalarm,theDATUMimmediatelysoundsa
high‐pitchedtoneandgoestotheALARMSscreen.Theoperatormustscroll,ifnecessary,totheactive
alarm,indicatedbytheflashingtext,usingtheUpandDownbuttons,andmusttouchtheMUTEbutton
tosilencethealarm.
Ifthealarmconditionpersistsandtheoperatormutesthe
alarm,theaudibletonewillbesilencedbut
theDATUMmaybepreventedfromoperatingnormally,dependingonhowthesystemwassetupby
thecommissioningengineer.Forexample,ifthesystemwassetuptocenterthefinsonalowoillevel
alarm, then muting a low oil level alarm
will not be enoughto allow a return to normal stabilizer
operation.Toreturntonormaloperation,eitherthealarmconditionmustberesolvedorthealarm
mustbeignored.
IgnoringanalarmtellstheDATUMtocompletelydisregardthealarmparameter.Thealarmignoring
featureis useful insystem
installation,setup and commissioningbutcould bedangerous in normal
operation, as serious alarm conditions could exist with no operator notification.As a result, the
potentialforequipmentdamageandpersonalinjurywouldbesignificant.Ifanalarmisignored,the
operatormustscrolltothealarmandpressRESETto
resumemonitoringthatparameter.
TheHistorybuttonallowstheusertoviewalogofalarmconditionsthathaveoccurred.TheDATUM
willrecordthe dateandtimeofeachoccurrence,andthefrequencyandtotaltimeofeachalarmtype.
TouchtheBackbuttontoreturntothepreviou s
screen.
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SYSTEMOPERATION
K. StandardAlarmConditions
1. LowHydraulicFluidLevelorHighHydraulicFluidTemperature
LevelandTemperaturesensorsareinstalledinthehydraulicreservoirassembly.TheDATUM
can be programmed to immediately and automatically CENTER the fins and de‐pressurize
hydraulicsystemonalowlevelalarmifdesired.
2. ForwardPortFinNotTrackingorFo rwardStarboardFinNotTrac kin g
ThepositionfeedbackpotentiometermountedtothefinshaftallowstheDATUMtodetermine
whetherornotthefiniswhereitiscommandedtobe(withinasmallpercentageoferror).Ifit
isnot,thenthe
trackingalarmwillactivate.Atrackingalarmcouldhavemanycauses,including
a failed hydraulic hose/tube, contamination in the hydraulic system causing improper
operation, problems with the hydraulic pump(s), low system pressure, failed or loose
mechanicalconnectionbetweenthefeedb ackpotentiometerandthefinshaft,electricalwi ring
problems,etc.
3.
Lossofaviab leSpeedSignal
Aspeedsignalalarmmayindicateafailureatthesignal’ssourceorinthewiringtotheDATUM.
ThelossofthesignalisinterpretedbytheDATUMasazerospeedconditionandtheDATUM
will therefore center the fins.If the operator
operationofthestabilizersystem,theDATUMcanbesettoManualspeedmodeinwhichthe
operatordetermines,usingtheFINLIMITINGscreen,aspeedtosimulatewithintheDATUM.
(RefertotheFINLIMITINGscreenformoreinformation.)
Otheralarm
parametersmaybemonitoreddependingonsystemconfiguration.
wishes to override the alarm and still enjoy
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SYSTEMOPERATION
STARTUPPROCEDURE
WARNING:
Neverallowanyperson toswim,dive,snorkelorotherwiseenter thevicinityofthestabilizerfinsatany
timethesystemisoperationalintheAtRest,AtSpeed orADAPTIVEmode.
Keep all persons and watercraft of all types a safe distance from the stabilizer fins. The stabilizer fins
develop
drowning.Thestabilizerfinsmoveforcefullyoverwideoperatinganglesandattimesmightbreaktheplane
ofthewatersurface.TheCaptainshallberesponsiblefordeterminingtheminimumsafedistance,butin
noevent
IMPORTANT:Refer to SAFETY WARNINGS AND OPERATING PRECAUTIONS section for STABILIZER FIN
DANGERZONE
sudden and strong water eddies and currents, which can cause serious personal injury or
shallitbelessthan10metersinalldirectionsmeasuredfromtheextremepositionsofeachfin.
CAUTION:
Stabilizerfins andallmovingparts ofthesystemmustbefreeandclearofallobstaclesbeforeoperating
thesystem.Seriousdamagetothefinsandsystemcanresultfrominterferencewithadock,pylon,quay,
oranyothersolidsurface.
WARNING:
NeverstartuptheDATUMwhilethehydrau licsystemispressurized.
Beforepressurizingthehydraulicsystem,verifythatthe finsandfinactuationequipment areclearofall
obstaclesand personnel.To avoidsuddenmotionsof the fins, the systemshouldalways beelectrically
energizedBEFOREthehydraulicsandelectricallyde‐energizedAFTERthehydraulics.
1. Verify that hydraulic power packs are OFF and/or engine or generator driven pumps are not
operating.
2. Donotstartupthecontrollerifthehydraulicsystemisalreadyrunning.Withthehydraulicsystem
notrunning,turntheDATUMcontrollercircuitbreakerorcustomer‐suppliedexternalpowerswitch
ON
to energize the DATUM.TheDATUM will perform a self ‐diagnostic procedure and lo ad the
database,asdescribedpreviously.Whencompleted,thedisplaypromptstheoperatortopressthe
Nextbuttontoadvancetothedisclaimerscreen.
3. ReadandacceptthedisclaimerbypressingProceed,andadvancetothe
MAINscreen.Theneither
startthehydraulicpowerpackfromthePOWERPACKCONTROLscreen(F5)orotherwisestartthe
hydraulicsystem.Inacorrectly installed system,thehydraulicswillnotbecomepressurizeduntil
theDATUMisputintoCenter,AtSpeed,AdaptiveorAtRestmode.
4. Selectanoperatingmode.
Thebehaviorofthesystemdependsonhowithasbeenconfigured.A
typicalsystem includes connections to marinegear (transmission)interlockswitchesandavessel
speedsignal.Inaddition,theFinLimitingcurve,describedearlier,istypicallyconfiguredtocenter
thefinsbelowacertainspeed.Thus,forexample,
ifAtSpeedmodeisselectedwhiledepartingthe
dockatlowspeed,thesystemmaydisplayCENTERBYSPEEDandthenautomaticallybecomeactive
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SYSTEMOPERATION
(AtSpeedmode)when the vesselexceedsa certain speed(typically3to5 knots).The parti cular
configurationfora specific vesselshouldresultfromdiscussionbetweenthevessel’scaptainand
theDATUMCommissioningEngineer.
SHUTDOWNPROCEDURE
1. TouchtheOFFbuttonontheMAINscreentohydraulicallycenterthefins,
de‐energizethehydraulic
systempressurevalve,anddisplaytheSYSTEMOFFscreen.
2. De‐activatethehydraulicsystem.Ifengine‐drivenpumpsarebeingused,ensurethattheengines
havebeenshutdownorthathydraulicpumpdriveclutch(es)aredisengaged.Iftheenginesareto
remainrunning,andthere
arenoclutchesonthepumps,youmustensurethatthecoolingwater
systemcontinuestosupplyseawatertothehydraulicheatexchangers.
3. Forextendedshutdownperiods,turntheDATUM controller circuitbreakerorcustom er‐supplied
externalpowerswitchOFF.
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SYSTEMOPERATION
TEMPORARYCOMMISSIONINGPASSWORD
TheDATUMhaspasswordprotectedmenusintendedforsettingupthesystemduringcommissioning.In
theeventaccesstothesetupproceduresisrequired,contactourServiceDept.fordetailsonobtaininga
temporarypassword,andperformingthenecessaryprocedures.Note:Accesstothesemenusshouldonly
berequiredifreplacingaDATUMsystemcomponent,suchastheControlModuleorMotionSensor,orif
deemednecessarybytheNaiadServiceDepartment.
CAUTION:
Thepasswordprotectedmenusallowaccesstocriticalsettingsandsetupproceduresthatareintended
forauthorizedNaiadDynamicscommissioningandservicepersonnelonly.Ifgiventemporaryaccessto
thesemenus,youmustbeawarethatalteringasettingmayadverselyaffectsystemperformanceand
couldpotentiallybedangerous.
1. Press the F7 button to bring up the SYSTEM MENU, and select Commission to bring up the
TEMPORARYPASSWORDscreen.
2. A
TemporaryCommissioningKeycodewillbedisplayedinthelowerleftcornerofthescreen,along
withthe telephonenumberof Naiad Dynamics’main office.Callthe phonenumber,and ask to
speakwithamemberoftheServiceDepartment.Explaintheproblemyouarehaving,andprovide
thekey
codeonthedisplay.Wewillthenbeabletogenerateapassword.
3. Enterthepasswordusingthekeypadonthescreen,andpressENT.Ifanincorrectkeyispressed,
usetheCLRbuttontocleartheentryandbeginagain.Whenthecodeisentered,theCOMMISSION
MENUwillbedisplayed.
4. Youwillbeinstructedonexactlywhattodotocompletethenecessarytask.Donotdeviatefrom
theinstructionsinanyway.ReturntotheSYSTEMMENUwhenfinished.
5. Repeataccesswillbeallowedforalimitedamountoftime,butwhenthe
proceduresarecomplete,
press NEW from the TEMPORARY PASSWORD screen to prevent unauthorized access to the
protectedmenus.
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SYSTEMOPERATION
SteeragewaymustbemaintainedatalltimestheStabilizerSystemissettoanyunderway
“fins operational” mode (AtSpeed, ADAPTIVE, or equivalent).Stabilizer Fins must be
centeredifsteeragewaycannotbemaintained.
Reverse water flow overthe fins withthe Stabilizer System set toany “fins operational”
mode(notcentered)
Whenattemptingtomakeheadway,neverallowthewaterspeedunderthehulltomatch
orovertakethehullspeed,evenmomentarily,suchasmayoccurinaheavyfollowingsea.
Thisdangeroussituationmustbecarefullyavoidedtopreventloss
controlandpossiblevesselbroaching.
Whenthepotentialforthisconditionexists,iftheheadingcannotbechangedtoalleviate
therisk,immediatelyCENTERtheStabilizerFins.
CAUTION:
The Stabilizer Fins mustbe centered atall times while maneuvering or makingsternway
(motoringasternorbackingdown).SeriousdamagetotheStabilizerFinsandFinActuators
canoccuriftheFinsarenotcenteredpriortomotoringastern.
TheStabilizer Finsmustbe centered at all times when
unlesstheSystemisequippedwiththeStabilizationAtRestoptionandtheSystemissetin
theAtRestmode.
CAUTION:
Whenunderwaywiththe Stabilizer System notinuse, the Fins must be centered.Never
operate the vessel underway with the Stabilizer System OFF unless the fin actuator
assembliesaresecuredinthecenterpositionwiththelockingpins.Seriousdamagetothe
StabilizerFinsandFinActuatorscanoccur
protected.
TheStabilizerSystemmustneverbesubjectedtotheextraordinaryforcesthatwilloccurif
thefins impact the surfaceof the water.TheCaptain must take whatever measuresare
necessary to prevent thefins from breaking thesurface of the water,
mayoccur.
WARNING:
Finsarebalancedanddonotnecessarilytrail,neveroperatethevesselunderwaywiththe
StabilizerSystemOFFsinceunpredictablefinandvesselmotionscanresult.
IMPORTANT
WARNING:
cancausetheStabilizerSystemtoINDUCEvesselroll.
ofsteeringandstabilizer
underway with no way on(adrift),
iftheFinsarenotmechanicallyorhydraulically
or serious damage
2‐18
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SYSTEMOPERATION
y
MANEUVERING
CAUTION:
Finsmustbecenteredwheneverthevesselismaneuveringormakingsternway(motoringasternorbacking
down).Failuretocenterthefinscancauseser iousdamagetothestab ili zersystem.Ifauto maticcentering,
byspeedorbygear,isdisallowed,thenthefinsmustbecenteredbytouchingtheCENTERbuttononthe
MAINscreen.
OPERATINGMODES
Stayclear of all movingpartsof the stabilizer system.Serious personal injury or death canresultfrom
interferencewithmovingpartsofthestabilizer.
CAUTION:
Beforeoperatingthestabilizersystem,verifythatthestabilizerfinsandallmovingpartsofthestabilizer
s
stemarefreeandclearofallobstaclesandpeople.
TheDATUMhasseveraloperatingmodes, eitherselectedmanuallybytheoperator(theuser)orselected
automaticallybytheDATUMtosuitthevessel’scurrentoperatingenvironment.
Theoperatorcanplacethesysteminanyoperatingmodeinthepresenceofanacknowledgedalarmbut
operatorshouldfirstdeterminethecauseofthealarmandcorrectit.Ifthisisnotpossible,thecauseofthe
alarmshou ldbecloselymonitoredforaworseningcondition(i.e.fur therheatingorlossofthehydrau licfluid).
A. OFF
Whenelectricalpowerisappliedtothe
screenand performashort self‐diagnostic test witha progress bar displayedat thebottom of the
screen.Whenthetestisfinished,thedisplayadvancestotheSYSTEMOFFscreenandtheDATUMis
inOFFmode.
When
Module,thoughenergized,isnotcontrollingthefins.InOFFmode,systemalarmsaresti llmonitored.
Ifanalarmconditionoccurs,thedisplaywillautomaticallygototheALARMSscreenand display
alarm.TheoperatormusttheneitheracknowledgeorinhibitthealarmasdescribedintheALARMS
sectionofthishandbook.
WARNING:
the
DATUMsystem,thegraphicaldisplaywillshowtheSTARTUP
theDATUMisinOFFmode,thehydrauliclinestothefinsarede‐pressurizedandtheControl
the
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SYSTEMOPERATION
B. CENTERbyUser
When the operator touches the CENTER button on the MAIN screen, the hydraulic system is
pressurizedandthefinsarehydraulicallyheldintheircenterpositionbytheDATUM.InallCENTER
modes,thesystemisreallystillactivebutbypassesthesystem’smotionsensors,targetingthezero‐
angle‐of‐attack
thevessel’srollmotion.Thus,thesystemisstillanelectro‐hydraulicclosed‐loopcontrolsystemthat
overcomesanyoutsideforcesactingtomovethefinsoffcenter.
positioninsteadoftheangleofattackthatwouldotherwiseberequiredtoneutralize
CAUTION:
Fins must be in CENTER whenever the vessel is maneuvering or making sternway (motoring astern or
backingdown).FailuretoCENTERthefinscancauseseriousdamagetothestabilizersystem.Ifautomatic
CENTERING,byspeedorbygear,isdisallowed, then the finsmustbecenteredby touching the CENTER
buttonontheMAINscreen.
C. CENTERbySpeed
TheDATUMusesthevessel’sspeedto
determinethe actionsandpositioning
of the fins to enhance both
performance and safety.CENTER by
Speedmodeisautomaticallyactivated
when the DATUM is operating in
AtSpeed®,ADAPTIVEorAtRest®mode
and the vessel’sspeed changes to be
within the auto‐centering speed
threshold(typicallybelow3knotswhen
in AtSpeed or ADAPTIVE mode, and
above3knotswh eninAtRestmode).If
thesystemweretoremainoperational
under those conditions, the vessel
could be subjected to severe and
unexpected motions, and the
equipmentcouldbecomedamaged.
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SYSTEMOPERATION
InCENTERbySpeedmode, the hydraulicsystem ispressurized and thefinsareheldintheir center
positionbytheDATUM.
Theauto‐centeringspeedthresholdsarefactorysetbutcanbeadjustedasneededtosuitaspecific
application.Thesystemwillautomatically resume its previousstabilizationmode
speed changes to bewithin the mode’soperational boundariesand if the Auto Resumefeature is
enabled.
WARNING:
If“CENTERbySpeed”modeisactivatedwhileoperatinginAtRestmodewithAutoResumeenabled,the
finswillautomaticallybeginmovingassoonasthevesselslowsbelowtheAtR estcenteringspeed(typi cally
3knots).Toavoidda mageorinjury,theoperatormustplacethesystemin“CENTERbyUser”modebefore
approachingdocks,crafts,orotherobjects.
Whilein CENTERby Speedmode, theoperatormay press CENTER onthe MAINscreen to put the
systemintheCENTERbyUsermode.Subsequentlypressing theAtSpeed(orAtRest)buttonwillcause
thesystemtoreturntoCENTERbySpeedmode.
TheAuto FinsCentering feature is
systemthenignoresthepresenceorabsenceoftheship’sspeedsignalandth ereforedoesnot“know”
howfastorslowtheves selisgoing.
RefertotheFINLIMIT INGscreenformoreonthespeed‐relatedfunctions
D. CENTERbyGear
InCENTERbyGearmode,thehydraulic
system is pressurized and the fins are
held in their center position by the
DATUMasa result ofthemarine gear
(transmissions) fin auto‐centering
conditionsbeingmet.
Foroperatorswhocruisealternatelyon
only the port orstarboard engine(for
fuel econ om y and engine hour
management),the DATUMcan be set
up to auto‐center only when all
transmissionsareoutofforwardgear.
Refer to the MARINEGEAR screenfor
moreinformation.
whenthe vessel’s
inhibitedif theFinLimiting feature isin manual modesince the
oftheDATUM.
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SYSTEMOPERATION
E. AtSpeed®(StabilizationUnderway)
TheDATUMcanbeputintoAtSpeedmodebytouchingtheAtSpeedbuttononthe MAINscreenas
longasthevessel’sspeedisabovethelow‐speedauto‐centeringthreshold(t yp ically3to4knots,re fer
totheFINLIMITINGscreenformoreinformation)
present.InAtSpeedmode,thehyd rau licsystemispressurizedandtheDATUMactivelymodulatesthe
angularpositionofthefinstocorrectvesselrollinresponsetothesystemsensors’rollangle,velocity
andaccelerationsignalsandasafunctionofvessel
sensitivitiesusedbytheDATU Mtocalculatethecommandedfinpositionarethosesetmanuallybythe
operatorfrom theSENSITIVITYscreen.(Referto theSENSITIVITYscreen formoreinformation.)In
AtSpeedmode,thefi nsgenerateali ftforcethatdependsonwater
forwardmotionofthevesselthroughthewater.Thisliftforceisappliedtothehullatpreciselythe
righttimethroughcontinuousandproport i on alfinanglemodulationtoeffectivelycounteractroll.
IfanalarmoccursinAtSpeedmode,the systemwillautomaticallygo
inCENTERandcannotbeputintoanyothermodeuntilthealarmsareackn owledgedorinhibited.
andaslongastherearenounacknowledgedalarms
speed.TheRollAngle,VelocityandAcceleration
flowoverthefinresultingfromthe
intoCENTERmode.Itwillremain
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SYSTEMOPERATION
F. ADAPTIVE(Self‐Lea rningStab ilizat ionUnderway)
TheDATUMcanbeputintoADAPTIVEmodebytouchingtheADAPTIVEbuttonontheMAINscreenas
longasthevessel’sspeedisabovethelow‐speedauto‐centeringthreshold(t yp ically3to4knots,re fer
totheFINLIMITINGscreenformoreinformation)andaslongasthereare
present.
InADAPTIVEmode:
• ThehydraulicsystemispressurizedandtheDATUMactivelymodulatestheangularpositionofthe
finsto correctvesselroll in responseto thesystem sensors’roll angle, velocityand acceleration
signalsandasafunctionofvesselspeed.
• The
Angle,VelocityandAccelerationsensitivitiesusedtocalculatethecommandedfinpositionare
setautomaticallybytheDATUMbasedonproprietarymotioncontrolalgorithms.
• The Angle, Velocity and Acceleration sensitivities change and update continuously to reflect
changing vessel headings and sea conditions.(Refer to the SENSITIVITY screen for more
information.)
• The system applies the fins’ flow‐generated liftforce to counteract vessel roll, as itdoes in the
ACTIVEmode.
If an alarm occursin ADAPTIVEmode, the systemwill automaticallygo into CENTERmode.Itwill
remain in CENTER and cannot be put into any other mode until
inhibited.
nounacknowledgedalarms
the alarms are acknowledged or
2‐23
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SYSTEMOPERATION
G. AtRest®(StabilizationatAnchor)
Neverallowanypersontoswim,dive,snorkelorotherwiseenterthevicinityofthestabilizerfinsatany
timethesystemisoperationalintheAtRest,AtSpeed orADAPTIVEmode.
Keep all persons and watercraft of all types a safe distance from the stabilizerfins. The stabilizer fins
develop
drowning. The stabilizer fins move forcefully overwide operating anglesand at times might break the
planeofthewatersurface.TheCaptainshallberesponsiblefordeterminingtheminimumsafedistance,
butin no event
eachfin.
IMPORTANT:Refer to SAFETY WARNINGS AND OPERATING PRECAUTIONS section for STABILIZER FIN
DANGERZONE
WARNING:
sudden and strong water eddies and currents, which can cause serious personal injury or
shallit be less than10metersinall directionsmeasuredfromthe extreme positions of
Ifequipped withoptionalStabilizationAtRest control,the DATUM canbe put intoAtRestmode by
touchingtheAtRestbuttonontheMAINscreenaslongasthevessel’sspeedisbelowtheAtRestspeed
threshold(typically3to4knots).
InAtRestmode,thehydraulicsystemispressurizedandtheDATUM
is controlling the position of the fins in proportion to the rolling of the vessel.Unlike AtSpeed
(underway)modewherearoll‐counteringliftforceisgeneratedbywaterflowoverthefins,theforce
usedinAtRestmodeto
counteractvesselrollisgeneratedbyquicklyrotatingfinswithprecisetiming
andwithamagnitudethatisproportionaltotherolltendencyofthevessel.Incalculatingthetiming
andmagnitudeofthefinrotation,theDATUMusesRollAngleandVelocitysensitivitiessetmanually
bythe operator from
theSENSITIVITYscreen.VesselRoll Accelerationsensitivityhas little effectin
AtRestmodesoitisnotincluded.
IfanalarmoccursinAtRestmode,thesystemwillautomaticallygointoCENTERmode.Itwillremain
inCENTERandcannotbeputintoanyothermodeuntilthealarmsare
acknowledgedorinhibited.
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SYSTEMOPERATION
H. FinLimitingModes
TheDATUMread sthevessel’sspeedfromanNMEA0183signalgenerat or(suchasaGPSsystem)ora
200pulsepernauticalmile(ppnm)signalgenerator(suchasananalogspeedlog)andvariesthefin
anglecapabilityaccordingtotheFinLimitingcurveprogrammed
limitingistoreducedragandpowerconsumptionandtopreventfincavitation.
RefertotheFINLIMIT INGscreenformoreinformation.
ALARMS
WARNING:
Anyalarmmustbeinvestigatedat once. Acknowledging orinhibitingthealarmandcontinuingto
operatethe stabilizersystemwithoutcorrectingthecause ofthealarm maydamagethestabilizer
systemandcouldcausepersonalinjury.
ThestandardDATUMisprogrammedtomonitormultiplesystemparametersandtonotifytheoperatorif
anyoftheparametersgoesintoanalarmcondition.Intheeventofanalarm,theDATU Mimmediatelysounds
ahigh‐pitchedtoneanddisplaystheALARMSscreen.Theoperatormayacknowledgeorinhibit
Thestandardalarmconditionsare:
LowHydraulicFluidLevel
HighHydraulicFluidTemperature
ForwardPortFinNotTracking
ForwardStarboardFinNotTracking
Lossofavi ableSpeedSignal
RefertotheALARMSscreenfordetailedinformation.
SENSITIVITYCONTROLS
TheDatum features Thre e‐Term rollcontrol that
Accelerationaswellasallowingstaticheelcorrection.Thesensitivityofthesystemtothesefactorscan
beadjustedthroughthegraphicaldisplay’sSENSITIVITYscreen.
RefertotheSENSITIVITYscreenfordetailedinformation.
intotheDATUM.Thepurposeoffin
alarms.
sensesand correctsRoll Angle,RollVelocity andRoll
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INSTALLATION&SETUP
GENERALELECTRICALINFORMATION
A. SupplyVoltage
The DATUM requires a +24vdc (±2vdc) supply voltage and must be protected with a customer‐
supplied 7‐Amp circuit breaker. If the ship’s supply is different, then a DC‐DC converter may be
requiredandcanbepurchasedfromNAIAD.
B. Connections
NAIAD DATUM Cable Block Diagram specifies both the customer‐supplied and NAIAD–supplied
electrical cables.Electrical interconnections and terminations are shown on NAIAD DATUM
ElectricalInterconnectionsdrawing.
CAUTION:
Verifyallelectricalinterconnections.Systemdamagemayoccurifwiredincorrectly.Damage
resultingfromincorrectwiringisnotcoveredunderwarranty.
ELECTRICALBONDING
To minimize the possibility of galvanic corrosion, each actuator assembly must be connected to the
ship'sbondingsystem.Althoughallseawater‐exposedpartsoftheactua torassemblyarestainlesssteel,
electrical bonding is a critical corrosion inhibitor and is a required step in proper installation.
Disregardingthe
electrical bonding step constitutes animproperinstallationand thereby voids NAIAD's
warranty.
TROUBLESHOOTING
Problem: When thesystemis inOFFmode, analarmoccurs. (TheDATUMgoes intoOFFmode after
power‐upormaybeputintoOFFmodefromthemainscreen.)
Solution: Investigateandresolvethealarm.
TheDATUM is operatingnormally.Alarmsareenabled whenever the DATUMisconnected
to power, even when it is OFF.This is intentionally designed to advise an operator of
potentialproblemsattheearliestopportunity,evenbeforesystemoperation.
Problem: The DATUM does not go into AtSpeed or ADAPTIVE
mode.That is, after pushing the
commandonthemainscreen,thefinsdonotmovefromthecenterpositions.
Solution: TheDATUM systemmay be functioning normally.Noticewhat message is displayed in the
centersectionofthemainscreen.
If the message is “CENTER by Speed”, then the
vessel’s speed is below automatic fin
centering speed.In this case, either increase the ship’s speed above the low speed
automaticfin centering valueorenter, through theFinLimiting screen, an“artificial”speed
whose value is highenoughto “activate” thefins.For more information, referto the “Fin
LimitingScreen”sectionofthisHandbook.
3‐1
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INSTALLATION&SETUP
Ifthe message is “CENTER byGear”,thenthevessel’s marine gear are configured tosatisfy
the associated automatic fin centering function.This usually means that at least one
transmissionisinneutralorreverse.Inthiscase,eitherchangegearstoallowfinactivityor
set, on the Marine
Gear screen, the “marine gear centering” function to DISALLOWED to
overridethe reverse‐interlock protection.For moreinformation,referto the “Marine Gear
Screen”sectionofthisHandbook.
If the messageis “AtSpeed” or “ADAPTIVE”, and the fins do not move from center, verify,
from the Sensitivity screen that
reasonable sensitivity values have been entered.If so,
contactNaiadforassistance.Formore information,refer tothe“SensitivityScreen”section
ofthisHandbook.
Problem: ATrackingAlarmoccurs.
Solution: Atracking alarm (Forwar d Port and Forward Starboard fins respectively) is triggered when
the fin's position, measured by its position
feedback potentiometer, does not match the
position commanded by the DATUM control module. This alarm can have a number of
causesincludingwiringandelectricalfaultsorhydraulicleaks.
To identify the cause of this alarm, perform the following test:With the hydraulic power
source“on”, andgeneratingadequate
pressure,place theDATUMin the “CENTERbyUser”
mode.Verifythatallfinstogotocenterthenremainthereaslongasthehydraulicpoweris
on and the DATUM is in the “CENTER by User” mode.Then contact Naiad for further
detailedtroubleshootinginstructions.
Problem: ASPEED
SIGNALalarmoccurs.
Solution: Mostlikelytheship’sGPSunit,transmittingtheship’s speedsignaltotheDATUMsystem,is
notonorhasfailedto sendan updatedspeedsignal totheDATUM.Ensure thattheGPS is
on and that its speed signal output is configured correctly for NMEA
0183 GPVTG data
sentence(consultNaiadEngineeringforadditionaldetails).
Problem: A fin begins violently “shuddering” while the system is either operating, or in “CENTER”
mode.Thismayormaynotbeaccompaniedbya“fintracking”alarm.
Solution: Anelectrical component may require attentionor a wire has come
loose.Checkall wiring
and connections, particularly at terminations and junction boxes.Additional onboard
troubleshootingmayrequiresupportbycontactingNaiadforfurtherassistanceanddetailed
instructions.
3‐2
Page 99
SECTIONIII
THRUSTERSYSTEM
USA UnitedKingdom Netherlands France AsiaPacific
Connecticut Southampton Maastricht LaCiotat Perth,Australia
+12039296355 +44(0)2392539750 +31(0)436049200 +33(0)486060005 +61(0)451699676
Maryland
+13016902010
Florida
+19547977566
www.naiad.com
sales@naiad.com
service@naiad.com
Page 100
OPERATINGPROCEDURE
CHAPTER3
THRUSTEROPERATINGPROCEDURE
SECTION CONTENTS PAGE
1. Pre‐StartChecks 3‐2
2. Starting 3‐2
3. Operation 3‐3
4. Stopping 3‐3
5. Alarms 3‐3
6. PLCControlEnclosureDisplay 3‐4
3‐1
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