Simrad 38-200 COMBI W DATASHEET

Installation manual

TECHNOLOGY FOR SUSTAINABLE FISHERIES

www.simrad.com

Simrad 38/200 Combi W
Dual frequency echo sounder transducer

Simrad38/200CombiW

Installationmanual

Thisdocumentprovidesageneraldescriptionofhow
toinstalltheSimrad38/200CombiWDualfrequency
transducer.Theinformationmustberegardedasgeneral
guidelinesandrecommendationsonly.Theinstallation
shipyardmustdesignandmanufactureinstallationhardware
totthe38/200CombiWtransduceroneachindividual
vessel.

Observethemaximumpowerratingsforthis

transducer!

13October2009

164986/D

Documenthistory

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P.O. Box1 11
N- 3 19 1H o rt e n,N o rway

S im ra d

Tele p h on e :+ 473 30 34 00 0
Tele fa x:+ 4 73 30 42 98 7

con t a ct@sim ra d . com

w w w .s im r a d .co m

Documentnumber:164986/ISBN-13:978-82-8066-035-0

Rev.A08.11.04

Rev.B

Rev.C06.06.05

Rev.D

20.05.05

06.10.09

Firstversion.

Addedinformationaboutcableglands.

Correctederrorontheoutlinedimensiondrawingonpage29.
Thecorrectouterdiameteris180mm.

Additionalinformationadded.

Copyright

©2009KongsbergMaritimeAS
TheinformationcontainedinthisdocumentremainsthesolepropertyofKongsbergMaritimeAS.Nopart
ofthisdocumentmaybecopiedorreproducedinanyformorbyanymeans,andtheinformationcontained
withinitisnottobecommunicatedtoathirdparty,withoutthepriorwrittenconsentofKongsberg
MaritimeAS.Thedocument,oranypartofit,maynotbetranslatedtoanyotherlanguagewithoutthe
writtenapprovalfromKongsbergMaritimeAS.

Disclaimer

KongsbergMaritimeASendeavourstoensurethatallinformationinthisdocumentiscorrectandfairly
stated,butdoesnotacceptliabilityforanyerrorsoromissions.

Warning

Theequipmenttowhichthismanualappliesmustonlybeusedforthepurposeforwhichit
wasdesigned.Improperuseormaintenancemaycausedamagetotheequipmentand/orinjury
topersonnel.Theusermustbefamiliarwiththecontentsoftheappropriatemanualsbefore
attemptingtoinstall,operateorworkontheequipment.
KongsbergMaritimeASdisclaimsanyresponsibilityfordamageorinjurycausedbyimproper
installation,useormaintenanceoftheequipment.

Support

Ifyourequiremaintenanceorrepair,contactyourlocaldealer.Y oucanalsocontactususingthefollowing
address:-.Ifyouneedinformationaboutourotherproducts,visitourwebsite.Onthewebsiteyou
willalsondalistofourdealersanddistributors.

Installationmanual

Tableofcontents

ABOUTTHISMANUAL.......................................................5

SIMRAD38/200COMBIW................................................6

WHERETOMOUNTTHETRANSDUCER...............................7

HOWTOINSTALLTHETRANSDUCER..............................11

Transducerinstallationinblister............................................................................11

Usemountingandclampingringswheneverprovided...................................11

Smoothsurfaceisimportant........................................................................11

Example:Smallcirculartransducer..............................................................12

Commonguidelines....................................................................................12

Toe-in........................................................................................................13

Physicallocation.........................................................................................13

Transducerinstallationinboxkeel.........................................................................14

Usemountingandclampingringswheneverprovided...................................14

Smoothsurfaceisimportant........................................................................15

Example:Boxkeelinstallation....................................................................15

Transducerushmountedinasteeltank...............................................................15

Usemountingandclampingringswheneverprovided...................................15

Smoothsurfaceisimportant........................................................................16

Waterlled.................................................................................................16

Example:Flushmountinginasteeltank......................................................16

Transducerwithacousticwindow..........................................................................17

Usemountingandclampingringswheneverprovided...................................17

Smoothsurfaceisimportant........................................................................17

Example:Acousticwindow.........................................................................18

Transducermountedinsidethehull.......................................................................18

Usemountingandclampingringswheneverprovided...................................19

Smoothsurfaceisimportant........................................................................19

Example:Mountinginsidethehull..............................................................19

Transducermountedonadropkeel.......................................................................20

Retractabletransducer............................................................................................21

TRANSDUCERCABLEGLANDSANDSPLICING.................22

Aboutcableglands.................................................................................................22

Cableglandforsteelhulls......................................................................................23

CableglandforwoodenandGRPhulls.................................................................24

Cableglandsforsmallhulls...................................................................................25

Transducercablesplicing.......................................................................................26

Ordernumbers........................................................................................................26

STEELCONDUIT..............................................................27

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3

Simrad38/200CombiW

TRANSDUCERHANDLINGANDMAINTENANCE................28

Rulesfortransducerhandling.................................................................................28

Approvedanti-foulingpaints..................................................................................29

Usingself-lockingtaps...........................................................................................29

IntroductiontoEmugeself-lockingthreads...................................................30

Drawingstandard........................................................................................31

Tapsandgauges..........................................................................................31

Self-locktapsprovidedbySimrad...............................................................32

Supplierandmanufacturer...........................................................................32

DRAWINGFILE...............................................................33

Echosounderconnections......................................................................................33

Splicingthetransducercable.......................................................................33

GeneralPurposeTransceiver(GPT)wiring...................................................34

Transducercablepairs.................................................................................34

GeneralPurposeTransceiver(GPT)transducerplugassembly.......................35

Outlinedimensionsandinstallationdrawings........................................................36

Outlinedimensions[208889].......................................................................37

Mountingring[208846]..............................................................................38

Clampingring[204677]..............................................................................40

Recommendedarrangement[204678]..........................................................42

4

164986/D

ABOUTTHISMANUAL

Aboutthismanual

Purpose

Thepurposeofthisinstallationmanualistoprovidethegeneric
descriptionsandillustrationsthatallowsyoutounderstandthe
basicprinciplesforechosoundertransducerinstallation.

Caution

Observethemaximumpulsepowerratingforthis
transducer:

•38kHz:400W

•200kHz:250W

Maximumcontinuouspowerratingis:

•38kHz:4W

•200kHz:2,5W

DONOTapplymorepowerthantheratedmaximum!
Exceedingthepowerinputwillpermanentlydamage
thetransducer.

Abouttheinformationprovidedinthisdocument

Theinformationinthisdocumentmustberegardedasgeneral
guidelinesandrecommendationsonly.Theinstallationshipyard
mustdesignandmanufactureinstallationhardwaretoteach
individualtransducerandvessel.

Approvalbymaritimeauthorities

Wheneverrequired,theinstallationshipyardmustalsohavethe
installationapprovedbytheapplicablemaritimeauthorities.

Additionalinformation

Foradditionaldetailedinformationaboutthetransducerto
beinstalled,refertothedocumentationprovidedwiththe
transducer.Drawingsanddescriptionscanalsobeobtainedfrom

t t p : / / w w w . s i m r a d . c o m .

h

164986/D

5

Simrad38/200CombiW

SIMRAD38/200COMBIW

Thepurposeofthismanualistheprovidethebasicinformation
requiredtoinstalltheSimrad38/200CombiWDualfrequency
transducer.

Transduceranddocuments

•Simrad38/200CombiW:KSV-208845

•Datasheet:165019

•Drawings:

–Outlinedimensions:834-208889

–Mountingring:499-208846

–Clampingring:820-204677

–Mountingarrangement:820-204678

Note

Althoughdrawingsareprovidedtoexplaintheinstallation
principles,theinstallationshipyardmustprovidethenal
drawingsrequiredtotthetransducertoeachindividual
vessel.Also,whenapplicable,theinstallationshipyardmust
havethedrawingsandinstallationapprovedbytheproper
maritimeauthorities.Thedrawingsspecicforthe38/200
CombiWtransducerarelocatedintheDrawingleon
page33.

Technicalspecications

RefertotheSimrad38/200CombiWdatasheet.Y oucanread
and/ordownloadthedatasheetonh t t p : / / w w w . s i m r a d . c o m .

Additionalpartsprovidedforinstallation

ThefollowingitemscanbesuppliedbySimradtofacilitate
installation.Theitemsmustbeorderedseparately.

•Mountingring:ES1-208847

•Clampingring:ES1–203672

•Transducercable(forextension):642-078215

6

164986/D

WHERETOMOUNTTHETRANSDUCER

Wheretomountthetransducer

Asingleanswertothequestionwheretolocatethetransducer
cannotbegiven.Itdependsverymuchonthevessel’s
construction,howthehullisshapedandhowthewaterruns
alongthehull.Therearehoweveranumberofimportantguide
lines,andsomeoftheseareevenconicting.

Mountthetransducerdeep

Mountthetransduceratadeeppositiononthehull.Considerthe
situationswhenthevesselisunloaded,andwhenitispitching
inheavyseas.

Thereareseveralreasonsforthis.

1Theupperwaterlayersoftheseacontainamyriadofsmall

airbubblescreatedbythebreakingwaves.Inheavyseasthe
upper5to10metresmaybelledwithair,andthehighest
concentrationswillbenearthesurface.Airbubblesabsorb
andreectthesoundenergy,andtheymayinworstcases
blockthesoundtransmissionaltogether.

2Anotherreasontogodeepisthecavitationinfrontof

highpowertransducers.Cavitationistheformationof
smallbubblesinthewaterduetotheresultinglocal
pressurebecomingnegativeduringpartsoftheacoustic
pressurecycles.Thecavitationthresholdincreaseswiththe
hydrostaticpressure.

3Thetransducermustneverbeliftedfreeofthewatersurface.

Transmittingintoopenairmaydamagethetransducer
beyondrepair.Mountingthetransduceratadeepposition
onthehullpreventsthis.

4Ifthetransducerisliftedupfromthewaterduringheavy

seas,itmaybedamagedwhenthehullstrikesbackatthe
seasurface.Thisisespeciallyimportantforlowfrequency
transducerswithlargefaces.

Mountthetransducerawayfromprotruding
objectsonthehull

Objectsprotrudingfromthehull,suchaszincanodes,sonar
transducersoreventhevessel’skeel,generateturbulenceand
ownoise.Holesandpipeoutletsarealsoimportantnoise
sources.Theymayactasresonantcavitiesamplifyingtheow
noiseatcertainfrequencies.Donotplaceanechosounder
transducerinthevicinityofsuchobjects,andespeciallynot
closebehindthem.Forthesamereason,itisveryimportant
thatthehullareaaroundthetransducerfaceisassmoothand
levelaspossible.Eventracesofsealingcompound,sharpedges,
protrudingboltsorboltholeswithoutllingcompoundwill
createnoise.

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7

Simrad38/200CombiW

Figure1Boundarywaterlayer

Mountthetransducerattheforwardpartofthe
hulltominimisetheeffectsfromtheboundary
waterlayer

Whenthevesselforcesitswaythroughthesea,thefriction
betweenthehullandthewatercreatesaboundarylayer.The
thicknessoftheboundarylayerdependsuponvesselspeedand
theroughnessofthehull.Objectsprotrudingfromthehull,and
dentsinthehull,disturbtheowandincreasethethicknessof
theboundarylayer.Theowinthisboundarylayermaybe
laminarorturbulent.Alaminarowisanicelyordered,parallel
movementofthewater.Aturbulentowhasadisorderlypattern,
fullofeddies.Theboundarylayerincreasesinthicknesswhenthe
owgoesfromlaminartoturbulent.Thegurebelowillustrates
theboundarylayerofavesselmovingthroughthewater.

ATurbulentow

BLaminarow

CAirbubblesinthewater

Furthermore,airbubblesintheseawaterarepresseddownbelow
thehullandmixedintotheboundarylayer.Theboundarylayer
isthinunderneaththeforwardpartofthevessel,andincreasesin
thicknessasitmovestowardsaft.Ifthesidesofthehullaresteep,
someoftheairbubblesintheboundarylayermayescapetothe
seasurfacealongthevesselsides.Itisourexperiencethatawide
andatbottom,witharisinganglelessthanaround13degrees,
ispronetogivingairproblemsforthetransducer.Inanycasea
transducerlocationintheforwardpartofthehullispreferredin
ordertominimisetheinuenceoftheboundarylayer.

8

164986/D

Wheretomountthetransducer

Mountthetransducerfarawayfromthepropellers

Thepropulsionpropelleristhedominantnoisesourceonmost
shingvessels,researchvessels,merchantvesselsandpleasure
crafts.Thenoiseistransmittedthroughtheseawater.For
thisreason,thetransducershouldbeplacedfarawayfromthe
propeller,whichmeansontheforepartofthehull.Positions
outsidethedirectlineofsightfromthepropellerarefavourable.
Onsmallvesselswithshortdistancesitisadvisedtomountthe
transduceronthatsideofthekeelwherethepropellerblades
moveupwards,becausethepropellercavitationisstrongeston
theotherside.Thecavitationstartsmosteasilywhenthewater
owsinthesamedirectionasthepropellerblade,andthatisto
somedegreethecaseatthatsideofthekeelwherethepropeller
bladesmovedownwards.

Mountthetransducerfarawayfromthebow
thrusters

Bowthrusterpropellersareextremelynoisy.Wheninoperation,
thenoiseandcavitationbubblescreatedbythethrustermake
theechosounderuseless,almostnomatterwherethetransducer
isinstalled.Andwhennotinoperation,thetunnelcreates
turbulence,andifthevesselispitching,thetunnelmaybelled
withairoraeratedwaterintheupperpositionandreleasethisin
thelowerposition.Ingeneral,alltransducersmustbetherefore
placedwellawayfromthebowthruster.However,thisisnot
aninvariablerule.Certainthrusterdesignscombinedwithits
physicallocationonthehullmaystilloffersuitabletransducer
locationsnearthethruster.Ifyouareindoubt,consultanaval
architect.

Mountthetransducerwithaslightlyinclined
transducerface

Ideally,thetransducerfaceshouldbemountedinparallelwiththe
seasurfacewhenthevesselisinnormaltrim,asthiswillprovide
themostaccurateechoinformation.However,itisalsovery
importantthatthew

a t e r  o w overthetransducerfaceislaminar.
Inordertoensurelaminarow,thetransducerfacemaybetilted
slightlyupwardsinrelationtothewaterow.Thisallowsthe
owingwatertomeetthefacedirectly,andassureslaminarow.
Theinclinationanglemusthoweverbedeterminedcarefully.The
anglemustbesmallontransducerswithnarrowbeamangles.As
aruleofthumb,mounttransducerswithbeamanglessmaller
thansevendegreeswithminimuminclinationangle.Thesmaller
beamangleyourtransducerhas,thesmallertheinclinationangle
canbe.Ensurethatyoudonotmountthetransducerwitha
negativeinclinationangle.Thismaycauseturbulenceunderthe
transducerface,andreducedechosounderperformance.

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9

Simrad38/200CombiW

Summaryandgeneralrecommendations

Someoftheaboveguidelinesareconicting,andeachcasehas
tobetreatedindividuallyinordertondthebestcompromise.
Generallythepropellernoiseisthedominantfactor,anda
recommendedtransducerlocationisintheforepartofthehull,
withmaximumdistancefromthebowequaltoonethirdofthe
totallengthofthehullatthewaterline.

Figure2Generalrecommendationfortransducerlocation

ATransducer

BInclinationangle

CHulllengthatwaterline

DMaximum1/3ofthehulllengthatwaterline(C)

Ifthevesselhullhasabulbousbow,thismaywellbeagood
transducerlocation,butalsoheremustbetakenintoconsideration
theowpatternoftheaeratedwater.Oftentheforemostpart
ofthebulbispreferable.

Figure3Recommendedlocationofthetransduceronabulbous
hull

AThruster

BTransducerlocation

10

164986/D

HOWTOINSTALLTHETRANSDUCER

Therearemanydifferentwaystomountthetransducer.These
aretherecommendedmethodstomountacirculartransducer.

Transducerinstallationinblister

Withatransducerwithcircularhousing,onerecommended
installationmethodisbyusingablister.Thetransducerblister
mustbedesignedandmanufacturedbytheinstallationshipyard
totthevessel’ssizeandhullshape.

Usemountingandclampingrings wheneverprovided

Circulartransducersmaybeprovidedwithmountingand
clampingrings,orwithdrawingstoallowforlocalproduction
ofthese.Themountingringisweldedtotheholepreparedfor
thetransducer,whiletheclampingringtsaroundtheedgeof
thetransducerbody.Boltsthroughtheclampingringintothe
mountingringwillsecurethetransducerbetweenthem.Note
thatseveraltransducersusedirectionguidestoallowcorrect
mounting.

Howtoinstallthetransducer

Smoothsurfaceisimportant

Mountingscrewsorboltsmustnotbeextrudingfromthe
transducerortheareaimmediatelyaroundit.Makesurethatthe
surfaceofthetransducerface,theinstallationhardwareusedto
mountit,thehullplatingandtheputtyaroundthetransduceris
asevenandsmoothaspossible.Obstructionsonthesesurfaces
willcreateproblemswithturbulentow.

164986/D

11

Simrad38/200CombiW

E

E

A

C

G

D

F

B

(CD017010B)

Figure4Smallcirculartransducer

Example:Smallcirculartransducer

Theillustrationbelowshowsatypicaltransducerblisterdesigned
forasmalltransducer.Thesameblisterdesignprinciplesasfora
largetransducerapply.

AStreamlined

blister

BMountingring

CClampingring

DGuide

EAiroutlet

FForward

GTransducer

cable

Notethatthetransducercablemustbeprovidedwithacableloop
insidetheblister.Observetheverticalforwardedgeoftheblister.
Thiswillguidethewatertoeachsideoftheblister.

Commonguidelines

Thebestperformanceisobtainedwithablisterheightof40cm
ormore.Astreamlinedshapeandroundededgesreducetheow
noise.Averticalleadingedgeorfrontwillguidetheaerated
watertothesidesoftheblister.Theorientationoftheblister
shouldfollowthewaterow.

12

164986/D

Howtoinstallthetransducer

(CD17010C)

A

B

C

Theinterioroftheblistermustbelledwithseawater.Use
drainageholesinthebottomandanairoutletonthetop.The
waterpressurebehindthetransducerwillthencompensatefor
theoutsidepressureduringvesselmovementsinroughsea.

Werecommendthatlargediametertransducersarettedwitha
horizontalU-shapedsupportbar.Thisbarcanthenbesecured
tothemountingringusingthreadedrods.

Thetransducercablepenetratesthehullinastufngtube.Leave
anadequateloopofthecablebehindthetransducerforeasy
mountingorremovalofthetransducer.

Toe-in

Theprimaryconsiderationmustbetoallowlaminarwaterow.
Inmostcasesthisisachievedbydesigningtheblisterinparallel
withthekeel.However,iftheblisterislocatedclosetothebow ,
thefrontoftheblistermayhaveafewdegreestoe-intowards
thebow.

Figure5Toe-inprinciple

AKeel

BBlister

CT oe-inangle

Theanglemustbechosentoallowformostefcientwaterow.
Itwillvarywiththelocationofthetransducer;thedepthbelow
thehull,thedistancefromthebow,andthedistancetothekeel.
Typicalanglesarefrom0to3°ondeplacementhulls.Onplaning
hulls,theangleisnormallycloseto0°.

Physicallocation

Theblisterisplacedononeofthesidesofthehull,andthe
distancefromthekeelisatradeoffbetweenaclosedistance
givingaturbulentowofwaterinanarrowpassage,andalarge
distancebringingthetransducerhigherupandalsomoreaffected
byvesselroll.Normallyadistanceofapproximately1misa
goodcompromise.

164986/D

13

Simrad38/200CombiW

AKeel

BTransducer

blister

CHorizontal

distance
betweenkeel
andblister

DVertical

distance
betweenthe
blistersurface
andthekeel

Observethehorizontalandverticaldistances(CandD)between
thekeelandthetransducerblister.Onamediumsizedvessel,the
horizontaldistance(C)shouldbeapproximately1meter.The
verticaldistance(D)mustingeneralbeassmallaspossible.This
isimportanttopreventthekeelfromshadowingthetransducer
beaminshallowwaters.

Transducerinstallationinboxkeel

Vesselswithaboxkeelmayusethisfortransducerinstallation.

Theboxkeelisalreadythedeepestpartofthevessel.Ifthe
boxkeelistoonarrowtoaccommodatethetransducer,itcanbe
widened,eithersymmetricallyortoonesideonly.Inthelast
casetheinstallationcouldalsobedescribedasablistermerged
intothekeel.

Usemountingandclampingrings wheneverprovided

Circulartransducersmaybeprovidedwithmountingand
clampingrings,orwithdrawingstoallowforlocalproduction
ofthese.Themountingringisweldedtotheholepreparedfor
thetransducer,whiletheclampingringtsaroundtheedgeof
thetransducerbody.Boltsthroughtheclampingringintothe
mountingringwillsecurethetransducerbetweenthem.Note
thatseveraltransducersusedirectionguidestoallowcorrect
mounting.

14

164986/D

Figure6Boxkeelinstallation

(CD1701

1A)

A

B

D

C

E

ABoxkeel

BU-shaped

support
bar(only
recommended
onlarge
transducers)

Howtoinstallthetransducer

Smoothsurfaceisimportant

Mountingscrewsorboltsmustnotbeextrudingfromthe
transducerortheareaimmediatelyaroundit.Makesurethatthe
surfaceofthetransducerface,theinstallationhardwareusedto
mountit,thehullplatingandtheputtyaroundthetransduceris
asevenandsmoothaspossible.Obstructionsonthesesurfaces
willcreateproblemswithturbulentow.

Example:Boxkeelinstallation

Thegurebelowillustratesasymmetricalboxkeelinstallation.

CStufngtube

DCableinsteel

conduit

ECableservice

loop

Transducerushmountedinasteeltank

Flushmountingisusedonverylargevesselswithahullsodeep
thatnoairbubblesarefoundbelowthehull,andonvessels
operatinginshallowharboursorwaters,whereaprotruding
blistercannotbeaccepted.

Thestandardprocedureforushmountingonasteelvesselis
toweldasteeltankinsidethehull,andmountthetransducer
intothistank.

Usemountingandclampingrings wheneverprovided

Circulartransducersmaybeprovidedwithmountingand
clampingrings,orwithdrawingstoallowforlocalproduction
ofthese.Themountingringisweldedtotheholepreparedfor
thetransducer,whiletheclampingringtsaroundtheedgeof
thetransducerbody.Boltsthroughtheclampingringintothe

164986/D

15

Simrad38/200CombiW

(CD17012A)

B

A

G

C

D

E

F

mountingringwillsecurethetransducerbetweenthem.Note
thatseveraltransducersusedirectionguidestoallowcorrect
mounting.

Smoothsurfaceisimportant

Mountingscrewsorboltsmustnotbeextrudingfromthe
transducerortheareaimmediatelyaroundit.Makesurethatthe
surfaceofthetransducerface,theinstallationhardwareusedto
mountit,thehullplatingandtheputtyaroundthetransduceris
asevenandsmoothaspossible.Obstructionsonthesesurfaces
willcreateproblemswithturbulentow.

Waterlled

Asforablister,theinteriorofthetankmustbelledwithwater.

Thiscanbeaccomplishedbyairreleasethroughasteeltube,
whichisextendedeithertoopenair1.5mabovethewaterline
ortothewateroutsidethehullatapointhigherthanthetank
interior.

Ifthetubeisextendedtoopenair,drainagemustbeprovided
withleakageatthetransducerangeoraseparateholeinthe
tankbottom.

Example:Flushmountinginasteeltank

Transducermountinginasteeltankisshowninthegurebelow .

Figure7Flushmountinginasteeltank

ASteeltank

BWater

CDrainagehole

DCableservice

loop

ESteeltubefor

airoutlet

FStufngtube

GCableinsteel

conduit

16

164986/D

Transducerwithacousticwindow

Vesselsoperatinginarcticwatersneedspecialattentionon
transducerinstallation.Floatingblocksoficemaydamageeven
aushmountedtransducerface.ForthissituationSimradoffers
arctictanksindifferentsizes.

Usemountingandclampingrings wheneverprovided

Circulartransducersmaybeprovidedwithmountingand
clampingrings,orwithdrawingstoallowforlocalproduction
ofthese.Themountingringisweldedtotheholepreparedfor
thetransducer,whiletheclampingringtsaroundtheedgeof
thetransducerbody.Boltsthroughtheclampingringintothe
mountingringwillsecurethetransducerbetweenthem.Note
thatseveraltransducersusedirectionguidestoallowcorrect
mounting.

Howtoinstallthetransducer

Smoothsurfaceisimportant

Mountingscrewsorboltsmustnotbeextrudingfromthe
transducerortheareaimmediatelyaroundit.Makesurethatthe
surfaceofthetransducerface,theinstallationhardwareusedto
mountit,thehullplatingandtheputtyaroundthetransduceris
asevenandsmoothaspossible.Obstructionsonthesesurfaces
willcreateproblemswithturbulentow.

164986/D

17

Simrad38/200CombiW

(CD017012B)

B

A

C

G

D

E

F

Figure8Acousticwindow

ASteeltank

BOil

CAcoustic

window

Example:Acousticwindow

Thetransducershowninthegurebelowismountedinsidethe
tankbehindastrongacousticwindowwhichcouldbemadeof
polycarbonate.

Thetankislledwithoil.

DCableservice

loop

EStufngtube

FCableinsteel

conduit

GOilinlet

Transducermountedinsidethehull

Thetransducercanalsobemountedinsidethehull.

Aninstallationofthetransducerinsidethehull,andsounding
throughthehull,requiresagoodacousticcontactbetweenthe
transducerfaceandthehull.Buildatankaroundthetransducer
andllitwithaliquid.Oilusedinhydraulicsystemsisawell
suitedliquidforthispurpose.Itcontainsnogasbubblesand
isnon-corrosive.

Typicalvaluesofthetwowaylossare3dBforpolyester,6dB
foraluminiumand10dBforsteel.Hullsmadeofwoodora
sandwichtypewithfoaminthemiddle,attenuatethesoundso
muchthatthroughhullsoundingmustberegardedasimpossible.
Thelossvarieswiththedistancebetweentransducerfaceand
thehull.Thebestresultisobtainedwhenthedistanceishalfa
wavelength.ConsultSimradforadvice.Inadditiontotheloss,
thebeampatternisdegraded,becausealargerareaofthehullis
setintovibrations.

18

164986/D

Howtoinstallthetransducer

(CD017012C)

B

A

C

D

E

F

G

H

Usemountingandclampingrings wheneverprovided

Circulartransducersmaybeprovidedwithmountingand
clampingrings,orwithdrawingstoallowforlocalproduction
ofthese.Themountingringisweldedtotheholepreparedfor
thetransducer,whiletheclampingringtsaroundtheedgeof
thetransducerbody.Boltsthroughtheclampingringintothe
mountingringwillsecurethetransducerbetweenthem.Note
thatseveraltransducersusedirectionguidestoallowcorrect
mounting.

Smoothsurfaceisimportant

Mountingscrewsorboltsmustnotbeextrudingfromthe
transducerortheareaimmediatelyaroundit.Makesurethatthe
surfaceofthetransducerface,theinstallationhardwareusedto
mountit,thehullplatingandtheputtyaroundthetransduceris
asevenandsmoothaspossible.Obstructionsonthesesurfaces
willcreateproblemswithturbulentow.

Figure9Mountinginsidethehull

ASteeltank

BOil

CHullplating

DCableservice

loop

EStufngtube

FCableinsteel

conduit

GHoleforoil

lling

HAiroutlet

Example:Mountinginsidethehull

Thetransducershowninthegurebelowismountedinsidethe
hull.Thetankislledwithoil.

164986/D

19

Simrad38/200CombiW

(CD017012D)

B

C

A

Transducermountedonadropkeel

Theuseofadropkeelwiththepurposeofstabilisingthevessel
iswellknown.

Adropkeelisalsoasuperiorplatformforechosounder
transducers.Suchinstrumentkeelshavebeenbuilt,mainlyon
researchvessels,oftenprotrudingasfarasthreemetersbelow
thehull.Atthatdepth,thewaterisfreeofairbubblesupto
veryhighseastates.Thevesselisthenabletoperformreliable
acousticmeasurementsinopenseaalargerpartoftheyear.

AInstrumentkeelshaft

BLoweredposition

CBottomview

20

164986/D

Retractabletransducer

(CD017012E)

B

E

C

D

A

Howtoinstallthetransducer

Hullunitsallowingthetransducertobeloweredandhoistedare
commonlyusedforhorizontallookingsonars.Whennotinuse,
thetransducerisretractedintoatrunk.

Theretractablehullunitismoreexpensivethanablister,buton
vesselswithahullwhereitisdifcultorimpossibletoinstalla
blister,itmaystillbeworthwhile.Theprinciplesofahullunit
witharetractabletransducerisshownbelow.

Vesselswithoutakeelandwithawide,atbottomisanexample
wherearetractablehullunitcanbetheonlyacceptablemethod
forbringingtheechosoundertransducerbelowtheboundary
layer.

ATransducer

BTrunk

CTransducer

shaft

DTransducer

shaftsleeve

EKeel

164986/D

21

Simrad38/200CombiW

TRANSDUCERCABLEGLANDSANDSPLICING

Thetransducercablemustpassthroughthehullusingapproved
cableglandsforthetypeofvesselinquestion.

Aboutcableglands

Asteelcableglandisnormallyusedonprofessionalvessels
withsteelhulls.Abronzecableglandcanbedeliveredasan
optionforvesselswithwoodorbreglasshulls.V esselnottobe
classiedcanasanoptionuseacableglandmadeofplastic.

Note

Simradstronglyrecommendsthatalengthofconduitistted
aroundtransducercableglandsmadeofsteelorbronzeand
extendedoverthewater-lineinsidethevessel.Thisprecaution
reducesthedangerofoodingintheeventofglandfailureand
transducersinstalledinthismannerarealsoeasiertoreplace.

Somevesselsmayexperiencedifcultiesndingsuitableareas
ofthehullformountingtransducercableglandsduetoexisting
watertanks,concreteballastorotherobstacles.Apossible
solutioninsuchcasesistorunthetransducercablesinasteel
conduitaftalongthehulluntilasuitablecableglandlocationis
available.Therespectivecableglandcanthenbeinstalledas
describedinthefollowinginstructions.

Note

Simradtakesnoresponsibilityforthecorrectinstallationof
cableglands,associatedhullmodicationsand/orstructural
supportoftransducercablepenetration.Theseactivitiesare
subjecttoindividualapprovalbytherespectiveclassication
societyforthevesselinquestion.

22

164986/D

Cableglandforsteelhulls

(CD17008A)

ø35

ø65

A

A

B

C

C

D

E

F

Thiscableglandkitisdesignedforsteelvessels.Itmustbe
weldedtothehullplates.

Transducercableglandsandsplicing

ASteelconduit

BStufngtube,DNVapprovedcarbonsteelst52.3

CW ashers

DRubbergasket

EPackingnipple.Makesurethatyoudonotdamagethe

transducercablebytighteningthepackingnippletoohard!

FCabletotheechosounder(orajunctionbox)

Thecableglandkitincludesallofthenecessarypartsneededto
installtheunitexceptscrews.

Simradrecommendsthataoneinchsteelconduit(thatthe
transducercablewillberunthrough)withaninsidethreaded
diameterofthree-quarterinchesisweldedtothegland’sstufng
tube.Theconduitmustextendtoabovethevessel’swaterline.

164986/D

23

Simrad38/200CombiW

A

B

B

B

C

C

C

D

E

F

CableglandforwoodenandGRPhulls

Abronzecableglandkitisavailableforwoodenand
glass-reinforcedplastic(GRP)vessels.

APackingnipple.Makesurethatyoudonotdamagethe

transducercablebytighteningthepackingnippletoohard!

BWashers

CRubbergaskets

DHolediameter28mm

ESteelconduit

FCabletotheechosounder(orajunctionbox)

Thecableglandkitincludesallofthenecessarypartsneededto
installtheunitexceptscrews.

Simradrecommendsthataoneinchsteelconduit(thatthe
transducercablewillberunthrough)withaninsidethreaded
diameterofthree-quarterinchesisattachedtothegland’spacking
nipple.Thisconnectionmustbewatertight,andtheconduitmust
extendtoabovethevessel’swaterline.

24

164986/D

Cableglandsforsmallhulls

(CD17008C)

A

A

J

B

C

D

G

E

F

H

I

Thiscableglandsmadeofplasticisdesignedforthosesmaller
vesselsthatdonotneedtobeclassied.

Transducercableglandsandsplicing

APackingnut(bronze).Makesurethatyoudonottodamage

thetransducercablebytighteningthepackingnuttoohard!

BRubbergasket

CPlasticdisk

DRubbergasket

EStufngtube

FBackingnut(bronze)

GBackingwasher(plastic)

HO-ring42.5x3.0N

IO-ring39.5x3.0N

JCabletotheechosounder(orajunctionbox)

Stufngtubeholediameter:36mm±1.5mm.

Applyampleamountofsealantbetweenthebackingwasher(H)
andthehullplate.

Thecableglandkitcontainsallthelistedparts,exceptthesealant.

Note

ThetwoO-ringsmustbeclean,ingoodconditionandfreeofcuts
orotherdefectswhichcouldaffecttheirwatertightintegrity.

164986/D

25

Simrad38/200CombiW

Transducercablesplicing

Ifyouneedtocutorlengthenthetransducercable,youmust
spliceitcorrectly .Thecablebetweenthejunctionboxandthe
transceivermustthenbesuppliedbySimrad,andthismustbe
thesametypeasusedonthetransducer(s).Tosplicethecable,
useametaljunctionboxwithEMCcableglandsandaterminal
block.Theterminalblockmustprovidesolidfasteningofthe
cableendsaswellassufcientinsulationbetweenthewires.We
recommendthatthecablescreenisconnectedtothejunction
boxchassisusingtheEMCcableglands,butifyoudothis,the
junctionboxchassism

Note

D o n o t solderthewirestogetherwithonlyelectricaltapefor
insulation.Thiswillresultinelectricalnoiseandreduced
operationalperformance.

u s t n o t beconnectedtovessel’sground.

o n o t connectthecablescreentothevessel’ sground.

D

Ordernumbers

Thecableglandsdescribedinthischapterareavailableaskits
fromSimrad.Observethefollowingordernumbers.

HulltypeItem

SteelCableglandkit,steel,8to15mmcables

SteelCableglandkit,steel,17to18,5mmcables

Wood/GRPCableglandkit,bronze

SmallCableglandkit,plastic

Ordernumber

499–037763

305609

119-038200

599-202182

26

164986/D

Steelconduit

STEELCONDUIT

Whyusesteelconduits?

Itisstronglyrecommendedtolayasteelconduitfromthe
transducer’scableglandtotheechosoundertransceiver,andto
pullthetransducercablethroughthisconduit.Thereareseveral
reasonsforthis.

•Itwillmakeiteasieratalaterstagetoreplacethetransducer.

•Noiseandinterferencefromotherelectricalequipmentis

greatlyreduced.

•Theriskofoodingisgreatlyreducedifthepipeisterminate

abovethewaterline.

WithasteelconduittheinstallationwillsatisfytheEU
regulationsforEMCinterference.Withoutasteelconduit,there
isariskofreducedechosounderperformance.

Steelconduitsqualitiesandshielding

Thesteelconduitmustbeunbrokenandwatertightfromthe
transducertoabovethewaterline.Fromthere,thecablecan
bepulledfurther,orajunctionboxcanbeinstalledtofacilitate
furtherconnections.Notethatthesteelconduitmustactasa
continuouselectricalscreenalltheway.
Steelconduitdimensions:

•minimum35mminnerdiameter

•minimum6mmwallthickness(4.5mmifgalvanised)

Morethatonetransducercable?

Iftwoormoretransducersareinstalledclosetoeachotheritis
possibletopulltheircablesinthesamesteelconduit,provided
theconduitdiameterisincreasedaccordingly.However,foreasy
replacementitisrecommendedthateachtransducerhasitsown
steelconduit.

164986/D

27

Simrad38/200CombiW

TRANSDUCERHANDLINGAND MAINTENANCE

YouMUSTobservethefollowingrulesforhandling,
maintenanceandpainting.

Rulesfortransducerhandling

Note

Donotliftthetransducerbythecable.

Donotexposethetransducertodirectsunlight.

Donotexposethetransducertoexcessiveheat.

Transportprotection

Sometransducersaredeliveredwithacoverplateontheface
forprotectionduringtransport.Letthisplatestayonaslongas
possible,butdonotforgettoremoveitbeforethevesselgoes
intothesea.

Paintingthetransducerface

Ananti-foulingpaintmaybeappliedtothetransducerface.
Becausesomepainttypesmaybeaggressivetothepolyurethane
inthetransducerface,pleaseconsultSimrad’slistofapproved
paints.SeeApprovedanti-foulingpaintsonpage29.

Cleaningthetransducerface

Wheneveropportunityarise,forexamplewhenthevesselisdry
docked,thetransducerfacemaybecleanedforshellsandother
marinefouling.B
f a c e . Useapieceofsoftwoodoraverynegradeemerypaper.

Specialrulesforacousticwindows

Arctictankshaveacousticwindowsmadeofpolycarbonate.
T

h e s e m u s t n e i t h e r b e p a i n t e d n o r c l e a n e d w i t h c h e m i c a l s .

Acousticwindowsmustnotbeexposedtodirectsunlight.

e c a r e f u l n o t t o m a k e c u t s i n t h e t r a n s d u c e r

28

164986/D

Approvedanti-foulingpaints

ThisisSimrad’slistofapprovedantifoulingpaintson
polyurethanetransducerhousing.

Jotun

Headofceaddress:P .O.Box2021,N-3248Sandefjord,Norway

Transducerhandlingandmaintenance

Website:w

w w . j o t u n . c o m .

1Racing

2Non-stop

3SafeguardUniversalprimer(125micron)withAntifouling

SeaQuantumUltra(125micron)

4AntifoulingSeaguardian

InternationalMarineCoatings

Address:W orld-wideofces

Website:w

w w . i n t e r n a t i o n a l - m a r i n e . c o m .

1Intersleektiecoat+425FCS

•BXA386/BXA390/BXA391Grey

•HKA563/HKA570/HKA571Yellow

•MixBXA386,BXA390andBXA391rst,thenapply.
Whendry,mixHKA563,HKA570andHKA571,apply.

2Intersmooth360EcoloexSPC

3MicronExtra

HempelIFACoatings

Usingself-lockingtaps

164986/D

Headofceaddress:HempelA/S,Lundtoftevej150,Kgs.
Lyngby ,DK-2800Copenhagen,Denmark

Website:w

w w . h e m p e l . c o m .

1HempelA/FClassic76550

Note

Refertothemanufacturer’ sdocumentationanddatasheetsfor
acompleteprocedure.

Screwconnectionsaregenerallymadesothattheycanbe
loosenedagain.However,accidentalloosening,especiallyunder
dynamicstress,mustbeavoided.Forthisreasonitisoften
necessarytouseadditionallockingdevices.Theseareoften
expensive,theycanbeusedonceonly,orreactcriticallyto
temperaturechanges.

29

Simrad38/200CombiW

A B C

2

1

(CD017020B)

IntroductiontoEmugeself-lockingthreads

Emugeself-lockisatapdesignwithanintegratedlockingfeature.

Standardmetricboltsareused.Theinternalthreadprovidesa
self-lockingconnection,whichcanbeusedrepeatedly.Itisnot
necessarytoinvolveasecondarylockingdevice(e.g.chemical,
nylonormechanical).TheEmugeself-lockboltswithstand
vibrationsbetterthanstandard(metric)threads,becausethe
threadcontactstopsthesidewaysmovement.Thespecial
designoftheinternalthreadprolealsoprovidesamoreeven
distributionofthetighteningstressoverthewholethreadlength.
Theassemblyisjustaseasyaswithanormal(metric)thread.
Thereisnogeneralapplicablestandard(e.g.DINstandard)for
theEmugeself-lockthread.

Figure10Example,internalandexternalthreads

AEmuge’ ssaw-toothproleuptopitchP≤0.7mm

BEmuge’ ssaw-toothproleuptopitchP≥0.7mm

CStandardthread

1Externalthread

2Internalthread

Advantages

•Thethreadlockingfeatureisintegratedintheinternalthread

•Modiedprolewithrampsurfaceinthedirectionofstress

•30degreerampsurfaceprovidesself-lockingeffect

•Easyassembly

•Noassemblyerrors(forgettingthelockingdevice)possible

•Useofstandardexternalthreads(screws)withtoleranceclass
“medium”

•Evendistributionofstressoverthewholethreadlength

•Nostrippingofthreads

30

164986/D

Transducerhandlingandmaintenance

M8SL*

M10SL*

(CD017020A)

•Economicallyefcientlockingsystem,noadditional
componentsarenecessary

•Undiminishedholdingpowerevenunderdynamicstress

•Repeatedlooseningandre-tighteningwithoutlossoffunction

•InternalthreadscanbeproducedwithEmugetaps,cold
formingtapsorthreadmills

•Largerthreadholediameters,i.e.increasedtoollifefor
threadingtools

•Largertolerancesforthreadholediameters

Drawingstandard

Wheneverself-lockingthreadsarerequired,thisisshownon
thetechnicaldrawing.Inthecaseoftappingthroughholes,
thearrowattheendofthecenterlineillustratesthescrew-in
directionofthebolt.

Figure1 1Drawingexamples,self-lockingthread

Thedrawingisnormallyprovidedwiththefollowingtext(or
similar):

Note:Theself-lockthreadsmarkedwithSL*mustbemadein
accordancewithprocedure842–202125.Drilldiametersfor
threadsdifferfromstandard.Self-locktapscanbesuppliedby
Simrad.

Tapsandgauges

Thepretensionlockingthreadself–lock(taps)frommanufacturer

Emugemustbeused.

164986/D

31

Simrad38/200CombiW

(CD017020C)

Figure12Exampleofuse

Note

Inthecaseoftappingthroughholesitisimportantthatthe
proleoftheEmugeself-lockthreadsisinthecorrectdirection
comparedwiththeenteringdirectionofthebolt.

UseEmugeself-lockgauges.Notethatthegaugemustbeused
inthecorrectdirection.

Self-locktapsprovidedbySimrad

Thefollowingself-locktapsareonstockatSimrad,andcanbe
orderedfromus.

Threads

M6ø5.2700-078838

M8ø7.0700-078531

M10ø8.8700-078408

M12ø10.7700-078409

M16ø14.5700-078410

Drilldiameterfor
threads

Part.no

Supplierandmanufacturer

Norwegiansupplieris:

TingstadAS,P.O.Box83,Kalbakken,0902Oslo,Norway

h

t t p : / / w w w . t i n g s t a d . n o

Manufactureris:

EMUGE-WerkRichardGlimpel,NurnbergerStrasse96-100,
D-90607Lauf,Germany

h

t t p : / / w w w . e m u g e . d e

32

164986/D

DRAWINGFILE

Drawingle

Thischaptercontainsrelevantdrawingsrelatedtotheelectrical
andphysicalinstallationoftheSimrad38/200CombiWDual
frequencytransducer.

Note

Themechanicaldrawingsareforinformationandguidanceonly.
Theyarenotinscale,andmaydifferslightlyfromtheoriginal
drawings.Alldimensionsareinmmunlessotherwiseisnoted.

TheoriginalinstallationdrawingsareavailableonPDFand/or
DWG(AutoCad)format.Visitw

Topics

•Echosounderconnectionsonpage33

w w . s i m r a d . c o m todownload.

Echosounderconnections

•Outlinedimensionsandinstallationdrawingsonpage36

Observethefollowinginformationrelatedtoelectrical
connectionofthe38/200CombiWDualfrequencytransducer.

Splicingthetransducercable

Ifyouneedtosplicethetransducercable,itisveryimportant
tousethecorrectcable,andtoavoidgroundloops.Westrongly
recommendtheuseofajunctionbox.W ealsorecommendthat
youinstallthetransducercableinasteelconduit.
Formoreinformation,see:

•Transducercablesplicingonpage26

•Steelconduitonpage27

•GeneralPurposeTransceiver(GPT)transducerplug

assemblyonpage35

164986/D

33

Simrad38/200CombiW

M

E

F

J

H

D

C

K

L

A

B

N

Transducer
cable

JunctionBox(1:1)

(Optional)

GPT Transducer

socket

W802-6

Rev.E

Dualfrequency ,singlebeamtermination

J

D
H

C

Screen

Black

Black

Black

Black

White

White

White

White

Connecttoplughousing

4

17

"Auxiliary"25-pin

D-connectoronGPT

Thermistor

Thermistor

Notused

Lowfrequency

Lowfrequency

Highfrequency

Highfrequency

Pair1

Pair2

Pair3

Pair4

Black

Black

Black

Black

White

White

White

White

P 1air :38kHz

P 2air :200kHz

P 3air : Thermistor

P 4air :Spare(notused)

Thepairnumberisprintedontheblackconductor .

Transducer

cable

(CD017000-008)

GeneralPurposeTransceiver(GPT)wiring

ObservethedrawingbelowtoconnecttheSimrad38/200Combi
WDualfrequencytransducertotheGeneralPurposeTransceiver
(GPT).Formoreinformationabouttheseconnections,referto
theapplicableechosounderinstallationmanual.

Transducercablepairs

Thisillustrationshowsthewiringinsidethetransducercable,and
howtoidentifytheindividualcablepairs.

Figure13Cabletermination,38/200CombiWDualfrequency
transducer

34

164986/D

GeneralPurposeTransceiver(GPT)

Rubbersleeve

Rubbersleeve

Retainingring

Contactbody

Plug

fasteningring

Upperplugcase

Bottomcap

andcableclamp

Washers

Heat-shrinkabletubing

Lowerplugcase

Outerscreentogetherwithinnerscreen.
Drainwire,foldbackoverjacket
andtemporaryfastenedwithtape.

Outerscreenandinnerscreenbraidwire
untapedandspreadoutunderwasher

CD010219APage1of1

824-201575Rev .C

Note:
Allmeasurementsareinmm.
Thedrawingisnotinscale.

transducerplugassembly

Drawingle

164986/D

35

Simrad38/200CombiW

Outlinedimensionsandinstallationdrawings

Note

Observethe32Nmtorquewhenthetransducerismountedusing
themountingandclampingrings.

Observethe17Nmmaximumtorquewhenthetransduceris
mountedusingthethreadedinsertsonthetransducerbody.

Topics

•Outlinedimensions[208889]onpage37

•Mountingring[208846]onpage38

•Clampingring[204677]onpage40

•Recommendedarrangement[204678]onpage42

36

164986/D

Allmeasurementsinmm.
Thedrawingisnotinscale

834-208889Rev .B

CD017000-004Page1of1

ø130

ø180

ø152

80

100.2

85.2

Use12mm

M8bolts

Weightwithoutcable:2,4kg

Threadedinserts
forportableuse

Drawingle

Outlinedimensions[208889]

164986/D

37

Simrad38/200CombiW

198

60degrees

M10
(Sixholes)

ø0.2

30degrees

Allmeasurementsinmm.
Thedrawingisnotinscale

499-208846Rev .A

CD017000-009Page1of2

Mountingring[208846]

38

164986/D

Drawingle

15

+0.3/-0

R0.5

R0.75(max)

20

+2/-2

30

+1/-1

6.3

ø181

+0.5/-0

ø222

+0.5/-0

ø226

+1/-1

109.3

+1/-1

ø240

+1/-1

ø122

+1/-1

84.3

+0.1/-0

0.075

Chamfer
3x45degrees

45degrees

Allmeasurementsinmm.
Thedrawingisnotinscale

499-208846Rev .B

CD017000-010Page2of2

164986/D

39

Simrad38/200CombiW

Clampingring[204677]

40

164986/D

Drawingle

164986/D

41

Simrad38/200CombiW

Recommendedarrangement[204678]

42

164986/D

Drawingle

164986/D

43

Simrad38/200CombiW

Index

A

About,5

informationinthis

manual,5

Acousticwindow,28

example,18

installation,17
Additionalinformation,5
Anti-fouling

paint,29
Approval

maritimeauthorities,5
Arrangement

drawing,42

B

Blister

Commonguidelines,12

installation,11

physicallocation,13
Boundarywaterlayer,8
Bowthrusters

noise,9
Boxkeel

example,15

installation,14

C

Cable

transducer,splicing,26
Cablegland

about,22

GRPhull,24

smallhull,25

steelhull,23

woodenhull,24
Cableglands

ordernumbers,26
Clampingring

blister,11

drawing,40
Clampingrings,11,14–15,

17,19

Cleaning

transducerface,28
Commonguidelines

blister,12
Conduit

steel,27

D

Diameter

steelconduit,27

Dimensions

drawing,37

Drawing

arrangement,42
Clampingring,40
GPTTransducerplug,35
mountingarrangement,42
Mountingring,38

outlinedimensions,37
Drawingle,33
Dropkeel

installation,20

E

EMCinterference,27
Emuge,30
Example

Acousticwindow,18

boxkeel,15

ushmounting,16

Insidethehull,19

F

Flushmounting

example,16

steeltanl,15

G

GeneralPurpose

Transceiver

transducerplug,35

wiring,34
Glass-reinforcedplastic

hull

cablegland,24
GPT

wiring,34
GPTTransducerplug

drawing,35
Groundloops

avoiding,33
GRPhull

cablegland,24

H

Handling,28
Handlingrules,28
Heat,excessive

doNOTexpose,28
HempelIF ACoatings,29
Hullunit

installation,21

I

Inclination

angle,9

Insidethehull

example,19
installation,18

Installation

drawings,6,33
hardware,6
responsibility,6

Installationmethod

Acousticwindow,17
Blister,11
Boxkeel,14
Dropkeel,20
Flushmounting,15
Hullunit,21
Insidethehull,18
Retractable,21
Steeltank,15

InternationalMarine

Coatings,29

Introduction,6

J

Jotun,29
Junctionbox

cablesplicing,33

L

Lifting,28
Location

recommendation,10

M

Maintenance,28
Maritimeauthorities

approval,5

Mountingarrangement

drawing,42

Mountingring

blister,11
drawing,38

Mountingrings,11,14–15,

17,19

N

Noise

boundarywaterlayers,8
bowthrusters,9
propeller,9

44

164986/D

Index

protrudingobjects,7

O

Ordernumber

transducer,6

Ordernumbers

cableglands,26

Outlinedimensions

drawing,37

P

Paint

anti-fouling,29

Painting

transducerface,28

Physicaldimensions

drawing,37

Physicallocation

blister,13

Propeller

noise,9
Protrudingobjects,7
Purpose

thismanual,5

R

Retractable

installation,21

Termination

cable,34

GPT,34
Toe-in,13
Transducer

lifting,28

ordernumber,6

recommendedlocation,10
Transducercable

pairs,34

splicing,26,33

termination,34
Transducerface

cleaning,28

painting,28
Transducerplug

drawing,35
Transportprotection,28

W

Waterlled

steeltank,16
Wiring

GeneralPurpose

Transceiver,34

Woodenhull

cablegland,24

S

Self-lockingtaps,30
Shielding

steelconduit,27
Simradwebsite,5
Smoothsurface,11,15–17,19
Splicing

transducercable,26,33
Steelconduit

diameter,27

qualities,27

shielding,27

why,27
Steelhull

cablegland,23
Steeltank

ushmounting,15

waterlled,16
Sunlight

doNOTexpose,28
Surface

smooth,11,15–17,19

T

Taps,self-locking,30

164986/D

45

ISBN-13:978-82-8066-035-0

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