Simrad ES70-7C - INSTALLATION REV B, ES70-7C Installation Manual

Installation manual

Simrad ES70-7C 70 kHz split-beam transducer

TECHNOLOGY FOR SUSTAINABLE FISHERIES

www.simrad.com

SimradES70-7C

Installationmanual

Thisdocumentprovidesageneraldescriptionofhowto installtheSimradES70-7CSplit-beamtransducer.The informationmustberegardedasgeneralguidelinesand recommendationsonly.Theinstallationshipyardmust designandmanufactureinstallationhardwaretotthe ES70-7Ctransduceroneachindividualvessel.

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Documenthistory

Documentnumber:307324/ISBN-10:-/ISBN-13:978-82-8066-080-0

Rev.A

November2006Firstversion.

Rev.B

January2009

Minorchangestothedocumentstructure.Mountingarrangement drawingchanged,seeRecommendedarrangement[204678]on page41.

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.

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Installationmanual

Tableofcontents

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

SIMRADES70-7C..............................................................6

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

HOWTOINSTALLTHETRANSDUCER..............................12

Transducerinstallationinblister............................................................................12

Transducerinstallationinboxkeel.........................................................................17

Transducerushmountedinasteeltank...............................................................19

Transducerwithacousticwindow..........................................................................20

Transducermountedinsidethehull.......................................................................21

Transducermountedonadropkeel.......................................................................23

Retractabletransducer............................................................................................24

TRANSDUCERCABLEGLANDSANDSPLICING.................25

Aboutcableglands.................................................................................................25

Cableglandforsteelhulls......................................................................................26

CableglandforwoodenandGRPhulls.................................................................27

Cableglandsforsmallhulls...................................................................................28

Transducercablesplicing.......................................................................................29

Ordernumbers........................................................................................................29

STEELCONDUIT..............................................................30

TRANSDUCERHANDLINGANDMAINTENANCE................31

Rulesfortransducerhandling.................................................................................31

Approvedanti-foulingpaints..................................................................................31

Usingself-lockingtaps...........................................................................................32

DRAWINGFILE...............................................................36

Echosounderconnections......................................................................................36

Splicingthetransducercable.......................................................................36

GeneralPurposeTransceiver(GPT)wiring...................................................37

GeneralPurposeTransceiver(GPT)transducerplugassembly.......................38

Outlinedimensionsandinstallationdrawings........................................................39

Outlinedimensions[204603].......................................................................40

Recommendedarrangement[204678]..........................................................41

Mountingring[204716]..............................................................................43

Clampingring[204718]..............................................................................45

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Aboutthismanual

ABOUTTHISMANUAL

Purpose

Thepurposeofthisinstallationmanualistoprovidegeneric descriptionsandillustrationsallowingthereadertounderstand thebasicprinciplesforechosoundertransducerinstallation.

Abouttheinformationprovidedinthisdocument

Theinformationinthisdocumentmustberegardedasgeneral guidelinesandrecommendationsonly.Theinstallationshipyard mustdesignandmanufactureinstallationhardwaretoteach individualtransducerandvessel.

Approvalbymaritimeauthorities

Wheneverrequired,theinstallationshipyardmustalsohavethe installationapprovedbytheapplicablemaritimeauthorities.

Additionalinformation

Foradditionaldetailedinformationaboutthetransducerto beinstalled,refertothedocumentationprovidedwiththe transducer.Drawingsanddescriptionscanalsobeobtainedfrom

h

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

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SimradES70-7C

SIMRADES70-7C

Thepurposeofthismanualistheprovidethebasicinformation requiredtoinstalltheSimradES70-7CSplit-beamtransducer.

Transduceranddocuments

•SimradES70–7C:KSV -203678

•Productspecication:855–164385

•Drawings:

–Outlinedimensions:834–204603

–Mountingring:871–204716

–Clampingring:871–204718

–Mountingarrangement:820-204678

Note

Althoughdrawingsareprovidedtoexplaintheinstallation principles,theinstallationshipyardmustprovidethenal drawingsrequiredtotthetransducertoeachindividual vessel.Also,whenapplicable,theinstallationshipyard musthavethedrawingsandinstallationapprovedbythe propermaritimeauthorities.Thedrawingsspecicfor theES70-7CtransducerarelocatedintheDrawingle onpage36.

Technicalspecications

RefertotheES70-7Cproductspecication.

Additionalpartsprovidedforinstallation

ThefollowingitemscanbesuppliedbySimradtofacilitate installation:

•Mountingring:ES7–203680

•Clampingring:ES7–203679

•Transducercable(forextension):642–078215

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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.

Mountthetransducermidwaybetweenthebow andthesterntoavoidheaveeffects

Heaveistheupanddownmovementofthevessel.Itdisturbsthe echotracesintheechogram,sothataatbottomisdisplayed asawave.Atransducerlocationinthemiddleofthevessel minimisestheinuenceofvesselrollandpitch.

Mountthetransducerawayfromprotruding objectsonthehull

Objectsprotrudingfromthehull,suchaszincanodes,sonar transducersoreventhevessel’skeel,generateturbulenceand ownoise.Holesandpipeoutletsarealsoimportantnoise sources.Theymayactasresonantcavitiesamplifyingtheow

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noiseatcertainfrequencies.Donotplaceanechosounder transducerinthevicinityofsuchobjects,andespeciallynot closebehindthem.Forthesamereason,itisveryimportant thatthehullareaaroundthetransducerfaceisassmoothand levelaspossible.Eventracesofsealingcompound,sharpedges, protrudingboltsorboltholeswithoutllingcompoundwill createnoise.

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.

Figure1Boundarywaterlayer

ATurbulentow

BLaminarow

CAirbubblesinthewater

Furthermore,airbubblesintheseawaterarepresseddownbelow thehullandmixedintotheboundarylayer.Theboundarylayer isthinunderneaththeforwardpartofthevessel,andincreasesin thicknessasitmovestowardsaft.Ifthesidesofthehullaresteep, someoftheairbubblesintheboundarylayermayescapetothe seasurfacealongthevesselsides.Itisourexperiencethatawide

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Wheretomountthetransducer

andatbottom,witharisinganglelessthanaround13degrees, ispronetogivingairproblemsforthetransducer.Inanycasea transducerlocationintheforwardpartofthehullispreferredin ordertominimisetheinuenceoftheboundarylayer.

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

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beamangleyourtransducerhas,thesmallertheinclinationangle canbe.Ensurethatyoudonotmountthetransducerwitha negativeinclinationangle.Thismaycauseturbulenceunderthe transducerface,andreducedechosounderperformance.

Summaryandgeneralrecommendations

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

Figure2Generalrecommendationfortransducerlocation

ATransducer

BInclinationangle

CHulllengthatwaterline

DMaximum1/3ofthehulllengthatwaterline(C)

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Wheretomountthetransducer

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

Figure3Recommendedlocationofthetransduceronabulbous hull

AThruster

BTransducerlocation

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HOWTOINSTALLTHETRANSDUCER

Therearemanydifferentwaystomountthetransducer.These aretherecommendedmethodstomountacirculartransducer.

Transducerinstallationinblister

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

Usemountingandclampingringswhenever provided

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.

Useahorizontalsupportbaronlargetransducers

Werecommendthatlargetransducersarettedwithahorizontal supportbar.Thepurposeofthissupportbaristoprotectthe transducerfromdamageintheeventofslamming.Thishappens ifthevesselhullclimbsoutofthewaterinheavyseas.Theforce ofthewaterwhenthehullfallsdownmaypushthetransducer upandcausedamagetoitsmounting.Thesupportbarcanbe securedtothemountingringusingthreadedrods.

[1]

1.Slammingistheimpactofthebottomstructureofashipontotheseasurface.Itismainlyobserved whilesailinginwaves,whenthebowraisesfromthewaterandsubsequentlyimpactsonit.Slamming inducesextremelyhighloadstoshipstructuresandistakenunderconsiderationwhendesigningships. (Wikipedia)

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Howtoinstallthetransducer

Example:Largetransducer

Theillustrationbelowshowsatypicaltransducerblisterdesigned foralargetransducer.Notethatduetothephysicalsizeof thetransducer,aU-shapedsupportbar(E)isusedtosupport thetransducer.Thepurposeofthissupportistopreventthe transducerfrombeingpushedupintotheblisterinheavyseas.

(CD017010A)

H

E

K

G

B

D

A

C

F

J

I

AStreamlinedblister

BStiffeningrib

CDrainageholes

DInclinationangle

EU-shapedsupportbar(onlargetransducers)

FForward

GCableserviceloop

HStufngtube

IMinimum400mm

JRoundedcorners

KAiroutlet

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Example:Smalltransducer

Theillustrationbelowshowsatypicaltransducerblisterdesigned forasmalltransducer.Thesameblisterdesignprinciplesasfora largetransducerapply .

E

A

C

G

D

F

B

(CD017010B)

AStreamlinedblister

BMountingring

CClampingring

DGuide

EAiroutlet

FForward

GTransducercable

Notethatthetransducercablemustbeprovidedwithacableloop insidetheblister.Observetheverticalforwardedgeoftheblister. Thiswillguidethewatertoeachsideoftheblister.

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Howtoinstallthetransducer

Example:Mediumsizedtransducerwithout clampingring

Theillustrationbelowshowsatransducerblisterdesignedfora mediumsizedtransducers.Thesameblisterdesignprinciples apply.Notethatthetransducerismountedwithoutaclamping ring,whichmakesitnecessarytouseadifferentmountingring design.

A

B

C

H

F

E

G

D

I

(CD017010E)

AStreamlinedblister

BMountingring

CBolt

DSelf-lockingthreads

EAiroutlet

FForward

GTransducercable

HTransducer

Notethatthetransducercablemustbeprovidedwithacableloop insidetheblister.Observetheverticalforwardedgeoftheblister. Thiswillguidethewatertoeachsideoftheblister.

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Commonguidelines

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

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.

(CD17010C)

A

B

C

AKeel

BBlister

CToe-inangle

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Howtoinstallthetransducer

Physicallocation

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

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

AKeel

BTransducer

blister

CHorizontal

distance betweenkeel andblister

DV ertical

distance betweenthe blistersurface andthekeel

Transducerinstallationinboxkeel

Vesselswithaboxkeelmayusethisfortransducerinstallation.

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

Usemountingandclampingringswhenever provided

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

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thetransducerbody .Boltsthroughtheclampingringintothe mountingringwillsecurethetransducerbetweenthem.Note thatseveraltransducersusedirectionguidestoallowcorrect mounting.

Smoothsurfaceisimportant

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

Useahorizontalsupportbaronlargetransducers

Werecommendthatlargetransducersarettedwithahorizontal supportbar.Thepurposeofthissupportbaristoprotectthe transducerfromdamageintheeventofslamming.Thishappens ifthevesselhullclimbsoutofthewaterinheavyseas.Theforce ofthewaterwhenthehullfallsdownmaypushthetransducer upandcausedamagetoitsmounting.Thesupportbarcanbe securedtothemountingringusingthreadedrods.

[2]

Example:Boxkeelinstallation

Thegurebelowillustratesasymmetricalboxkeelinstallation.

ABoxkeel

BU-shaped

supportbar (onlyrequired onlarge transducers)

CStufngtube

DCableinsteel

conduit

ECableservice

loop

(CD1701

1A)

A

B

D

C

E

2.Slammingistheimpactofthebottomstructureofashipontotheseasurface.Itismainlyobserved whilesailinginwaves,whenthebowraisesfromthewaterandsubsequentlyimpactsonit.Slamming inducesextremelyhighloadstoshipstructuresandistakenunderconsiderationwhendesigningships. (Wikipedia)

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Howtoinstallthetransducer

Transducerushmountedinasteeltank

Flushmountingisusedonverylargevesselswithahullsodeep thatnoairbubblesarefoundbelowthehull,andonvessels operatinginshallowharboursorwaters,whereaprotruding blistercannotbeaccepted.

Thestandardprocedureforushmountingonasteelvesselis toweldasteeltankinsidethehull,andmountthetransducer intothistank.

Usemountingandclampingringswhenever provided

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.

Useahorizontalsupportbaronlargetransducers

Werecommendthatlargetransducersarettedwithahorizontal supportbar.Thepurposeofthissupportbaristoprotectthe transducerfromdamageintheeventofslamming.Thishappens ifthevesselhullclimbsoutofthewaterinheavyseas.Theforce ofthewaterwhenthehullfallsdownmaypushthetransducer upandcausedamagetoitsmounting.Thesupportbarcanbe securedtothemountingringusingthreadedrods.

[3]

Waterlled

Asforablister,theinteriorofthetankmustbelledwithwater. Thiscanbeaccomplishedbyairreleasethroughasteeltube, whichisextendedeithertoopenair1.5mabovethewaterline ortothewateroutsidethehullatapointhigherthanthetank

3.Slammingistheimpactofthebottomstructureofashipontotheseasurface.Itismainlyobserved whilesailinginwaves,whenthebowraisesfromthewaterandsubsequentlyimpactsonit.Slamming inducesextremelyhighloadstoshipstructuresandistakenunderconsiderationwhendesigningships. (Wikipedia)

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SimradES70-7C

interior.Ifthetubeisextendedtoopenair,drainagemustbe providedwithleakageatthetransducerangeoraseparatehole inthetankbottom.

Example:Flushmountinginasteeltank

Transducermountinginasteeltankisshowninthegurebelow.

ASteeltank

BWater

CDrainagehole

DCableservice

loop

ESteeltubefor

airoutlet

FStufngtube

GCableinsteel

conduit

(CD17012A)

B

A

G

C

D

E

F

Transducerwithacousticwindow

Vesselsoperatinginarcticwatersneedspecialattentionon transducerinstallation.Floatingblocksoficemaydamageeven aushmountedtransducerface.ForthissituationSimradoffers arctictanksindifferentsizes.

Usemountingandclampingringswhenever provided

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

Smoothsurfaceisimportant

Mountingscrewsorboltsmustnotbeextrudingfromthe transducerortheareaimmediatelyaroundit.Makesurethatthe surfaceofthetransducerface,theinstallationhardwareusedto

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Howtoinstallthetransducer

mountit,thehullplatingandtheputtyaroundthetransduceris asevenandsmoothaspossible.Obstructionsonthesesurfaces willcreateproblemswithturbulentow.

Example:Acousticwindow

Thetransducershowninthegurebelowismountedinsidethe tankbehindastrongacousticwindowwhichcouldbemadeof polycarbonate.Thetankislledwithoil.

ASteeltank

BOil

CAcoustic

window

DCableservice

loop

EStufngtube

FCableinsteel

conduit

GOilinlet

(CD017012B)

B

A

C

G

D

E

F

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.

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Usemountingandclampingringswhenever provided

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.

Example:Mountinginsidethehull

Thetransducershowninthegurebelowismountedinsidethe hull.Thetankislledwithoil.

ASteeltank

BOil

CHullplating

DCableservice

loop

EStufngtube

FCableinsteel

conduit

GHoleforoil

lling

HAiroutlet

(CD017012C)

B

A

C

D

E

F

G

H

22

307324/B

Howtoinstallthetransducer

Transducermountedonadropkeel

Theuseofadropkeelwiththepurposeofstabilisingthevessel iswellknown.

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

(CD017012D)

B

C

A

AInstrumentkeelshaft

BLoweredposition

CBottomview

307324/B

23

SimradES70-7C

Retractabletransducer

Hullunitsallowingthetransducertobeloweredandhoistedare commonlyusedforhorizontallookingsonars.Whennotinuse, thetransducerisretractedintoatrunk.

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

Vesselswithoutakeelandwithawide,atbottomisanexample wherearetractablehullunitcanbetheonlyacceptablemethod forbringingtheechosoundertransducerbelowtheboundary layer.

(CD017012E)

B

E

C

D

A

ATransducer

BTrunk

CTransducer

shaft

DTransducer

shaftsleeve

EKeel

24

307324/B

Transducercableglandsandsplicing

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.

307324/B

25

SimradES70-7C

Cableglandforsteelhulls

Thiscableglandkitisdesignedforsteelvessels.Itmustbe weldedtothehullplates.

(CD17008A)

ø35

ø65

A

B

C

D

E

F

ASteelconduit

BStufngtube,DNVapprovedcarbonsteelst52.3

CWashers

DRubbergasket

EPackingnipple.Makesurethatyoudonotdamagethe

transducercablebytighteningthepackingnippletoohard!

FCabletotheechosounder(orajunctionbox)

Thecableglandkitincludesallofthenecessarypartsneededto installtheunitexceptscrews.

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

26

307324/B

Transducercableglandsandsplicing

CableglandforwoodenandGRPhulls

AbronzecableglandkitisavailableforwoodenandGRP vessels.

A

B

C

D

E

F

APackingnipple.Makesurethatyoudonotdamagethe

transducercablebytighteningthepackingnippletoohard!

BW ashers

CRubbergaskets

DHolediameter28mm

ESteelconduit

FCabletotheechosounder(orajunctionbox)

Thecableglandkitincludesallofthenecessarypartsneededto installtheunitexceptscrews.

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

307324/B

27

SimradES70-7C

Cableglandsforsmallhulls

Thiscableglandsmadeofplasticisdesignedforthosesmaller vesselsthatdonotneedtobeclassied.

(CD17008C)

A

J

B

C

D

G

E

F

H

I

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.

28

307324/B

Transducercableglandsandsplicing

Transducercablesplicing

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

u s t n o t beconnectedtovessel’sground.

Note

D o n o t solderthewirestogetherwithonlyelectricaltapefor insulation.Thiswillresultinelectricalnoiseandreduced operationalperformance.

D

o n o t connectthecablescreentothevessel’ sground.

Ordernumbers

Thecableglandsdescribedinthischapterareavailableaskits fromSimrad.Observethefollowingordernumbers.

HulltypeItem

Ordernumber

SteelCableglandkit,steel,

8to15mmcables

499–037763

SteelCableglandkit,steel,

17to18,5mmcables

305609

Wood/GRPCableglandkit,

bronze

119-038200

SmallCableglandkit,

plastic

599-202182

307324/B

29

SimradES70-7C

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.

30

307324/B

Transducerhandlingandmaintenance

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-foulingpaintsonpage31.

Cleaningthetransducerface

Wheneveropportunityarise,forexamplewhenthevesselisdry docked,thetransducerfacemaybecleanedforshellsandother marinefouling.B

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

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.

Approvedanti-foulingpaints

ThisisSimrad’slistofapprovedantifoulingpaintson polyurethanetransducerhousing.

307324/B

31

SimradES70-7C

Jotun

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

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

Wesite: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/HKA571Y ellow

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

2Intersmooth360EcoloexSPC

3MicronEkstra

HempelIFACoatings

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.

Usingself-lockingtaps

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

IntroductiontoEmugeself-lockingthreads

Emugeself-lockisatapdesignwithanintegratedlockingfeature.

Standardmetricboltsareused.Theinternalthreadprovidesa self-lockingconnection,whichcanbeusedrepeatedly .Itisnot

32

307324/B

Transducerhandlingandmaintenance

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.

Figure4Example,internalandexternalthreads

A B C

2

1

(CD017020B)

AEmuge’ ssaw-toothproleuptopitchP≤0.7mm

BEmuge’ssaw-toothproleuptopitchP≥0.7mm

CStandardthread

1Externalthread

2Internalthread

TheadvantagesofusingEmugeself-lockthreadinclude:

•Thethreadlockingfeatureisintegratedintheinternalthread

•Modiedprolewithrampsurfaceinthedirectionofstress

•30degreerampsurfaceprovidesself-lockingeffect

•Easyassembly

•Noassemblyerrors(forgettingthelockingdevice)possible

•Useofstandardexternalthreads(screws)withtoleranceclass “medium”

•Evendistributionofstressoverthewholethreadlength

•Nostrippingofthreads

•Economicallyefcientlockingsystem,noadditional componentsarenecessary

•Undiminishedholdingpowerevenunderdynamicstress

•Repeatedlooseningandre-tighteningwithoutlossoffunction

307324/B

33

SimradES70-7C

•InternalthreadscanbeproducedwithEmugetaps,cold formingtapsorthreadmills

•Largerthreadholediameters,i.e.increasedtoollifefor threadingtools

•Largertolerancesforthreadholediameters

Drawingstandard

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

Figure5Drawingexamples,self-lockingthread

M8SL*

M10SL*

(CD017020A)

Thedrawingisnormallyprovidedwiththefollowingtext(or similar):

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

Taps

Thepretensionlockingthreadself–lock(taps)frommanufacturer

Emugemustbeused.

34

307324/B

Transducerhandlingandmaintenance

Figure6Exampleofuse

(CD017020C)

Note

Inthecaseoftappingthroughholesitisimportantthatthe proleoftheEmugeself-lockthreadsisinthecorrectdirection comparedwiththeenteringdirectionofthebolt.

Gauge

UseEmugeself-lockgauges.Notethatthegaugemustbeused inthecorrectdirection.

Self-locktapsprovidedbySimrad

Thefollowingself-locktapsareonstockatSimrad,andcanbe orderedfromus.

Threads

Drilldiameterfor threads

Part.no

M6ø5.2700-078838

M8ø7.0700-078531

M10ø8.8700-078408

M12ø10.7700-078409

M16ø14.5700-078410

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

307324/B

35

SimradES70-7C

DRAWINGFILE

Thischaptercontainsrelevantdrawingsrelatedtotheelectrical andphysicalinstallationoftheES70-7CSplit-beamtransducer.

Note

Themechanicaldrawingsareforinformationandguidanceonly. Theyarenotinscale.Alldimensionsareinmmunlessotherwise isnoted.

TheoriginalinstallationdrawingsareavailableonPDFand/or AutoCadformat.Visitw

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

Topics

•Echosounderconnectionsonpage36

•Outlinedimensionsandinstallationdrawingsonpage39

Echosounderconnections

Observethefollowinginformationrelatedtoelectrical connectionoftheES70-7CSplit-beamtransducer.

Topics

•Splicingthetransducercableonpage36

•GeneralPurposeTransceiver(GPT)wiringonpage37

•GeneralPurposeTransceiver(GPT)transducerplug

assemblyonpage38

Splicingthetransducercable

Ifyouneedtosplicethetransducercable,itisveryimportant tousethecorrectcable,andtoavoidgroundloops.W estrongly recommendtheuseofajunctionbox.Wealsorecommendthat youinstallthetransducercableinasteelconduit.

Relatedtopics

•Transducercablesplicingonpage29

•Steelconduitonpage30

•GeneralPurposeTransceiver(GPT)transducerplug

assemblyonpage38

36

307324/B

Drawingle

GeneralPurposeTransceiver(GPT)wiring

M

E

F

J

H

D

C

K

L

A

B

N

Transducer cable

E

H

D

C

F

J

A B

JunctionBox(1:1)

(Optional)

GPT Transducer

socket

Channel1

Channel2

Channel3

Channel4

Connecttoplughousing

W802-4

Rev.E

Singlefrequency ,splitbeamtermination

Forward

Starboard

Port

Sectionsseenfromtop

ofthetransducer

2

1

3

4

2 1

3

4

White

Blue

White

Blue

Orange

Green

Brown

White

Blue

White

Blue

Black

Screen

Alternativecable

colours

307324/B

37

SimradES70-7C

GeneralPurposeTransceiver(GPT) transducerplugassembly

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.

38

307324/B

Drawingle

Outlinedimensionsandinstallationdrawings

Note

Observethe32Nmtorquewhenthetransducerismountedusing themountingandclampingrings.

Observethe17Nmmaximumtorquewhenthetransduceris mountedusingthethreadedinsertsonthetransducerbody.

Topics

•Outlinedimensions[204603]onpage40

•Recommendedarrangement[204678]onpage41

•Mountingring[204716]onpage43

•Clampingring[204718]onpage45

307324/B

39

SimradES70-7C

Outlinedimensions[204603]

ø250

125

80

ø24

ø280

85,2

R1

M8,depth12mm

70,2

R1

R5

Guidecam

Forward

ø130

CD017019EPage1of1

834-204603Rev .A

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

Maximumtighteningtorque(M8):17nM

Radiiwithoutdimensionsare2.5mm

Weightwithcable:9kg

40

307324/B

Drawingle

Recommendedarrangement[204678]

307324/B

41

SimradES70-7C

42

307324/B

Drawingle

Mountingring[204716]

30°

60°

ø0.2

M10 Selflocking

(6holes)

298

A

CD017019DPage1of2

871-204716Rev .A

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

Material: Steeltube,ST .52-3N(DIN17121),ø343/ø164

Surfacetreatment: SandblastedtoSA 2.5,onecoatingofredferricoxideprimer

M10Self-locktaps: Refertospecificdescription.Self-locktapscanbeprovidedbySimrad.

307324/B

43

SimradES70-7C

R0.75

(max)

R0.5

Chamfer 3x45°

45°

95±1

ø340±1

ø164±1

ø326±1

20±2

30±1

0.075

6.3

70+0.1/-0

ø322+0.5/-0

ø281+0.5/-0

15+0.3/-0

A- A

CD017019DPage2of2

871-204716Rev .A

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

44

307324/B

Drawingle

Clampingring[204718]

125±0.1

298

R5.5

A

R1

ø11

ø0.2

30°

60°

CD017019CPage1of2

871-204718Rev .A

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

307324/B

45

SimradES70-7C

R0.5

R1.5

ø18

15

10

6.3

ø320+0.5/-0

ø251+0.5/-0

A-A

CD017019CPage2of2

871-204718Rev .A

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

46

307324/B

Index

A

About,5

informationinthis

manual,5

Acousticwindow

example,21

installation,20 Additionalinformation,5 Airoutlet

example,13,15 Anti-fouling

paint,31 Approval

maritimeauthorities,5 Arrangement

drawing,41

B

Blister

Commonguidelines,16

installation,12

physicallocation,17

toe-in,16 Boundarywaterlayer,8 Bowthrusters

noise,9 Boxkeel

example,18

installation,17

C

Cable

transducer,splicing,29 Cablegland

about,25

GRPhull,27

smallhull,28

steelhull,26

woodenhull,27 Clampingring

blister,12

drawing,45

example,13 Clampingrings,12,17,

19–20,22

Commonguidelines

blister,16 Conduit

steel,30

D

Diameter

steelconduit,30

Dimensions

drawing,40

Drawing

arrangement,41 Clampingring,45 GPTTransducerplug,38 mountingarrangement,41 Mountingring,43

outlinedimensions,40 Drawingle,36 Dropkeel

installation,23

E

EMCinterference,30 Emuge,32 Example

Acousticwindow,21

Airoutlet,13,15

boxkeel,18

Clampingring,13

ushmounting,20

Insidethehull,22

Mountingring,13,15

Streamlinedblister,13,15

F

Flushmounting

example,20

steeltanl,19

G

GPTTransducerplug

drawing,38 GRPhull

cablegland,27

H

Handling,31 Handlingrules,31 Heat,excessive

doNOTexpose,31 Hullunit

installation,24

I

Inclination

angle,9 Insidethehull

example,22

installation,21

Installation

drawings,6,36 hardware,6 responsibility,6

Installationmethod

Acousticwindow,20 Blister,12 Boxkeel,17 Dropkeel,23 Flushmounting,19 Hullunit,24 Insidethehull,21 Retractable,24 Steeltank,19

Introduction,6

L

Lifting,31 Location

recommendation,10

M

Maintenance,31 Maritimeauthorities

approval,5

Mountingarrangement

drawing,41

Mountingring

blister,12 drawing,43 example,13,15

Mountingrings,12,17,

19–20,22

N

Noise

boundarywaterlayers,8 bowthrusters,9 propeller,9 protrudingobjects,7

O

Ordernumber

transducer,6

Outlinedimensions

drawing,40

P

Paint

anti-fouling,31

Physicaldimensions

307324/B

47

SimradES70-7C

drawing,40

Physicallocation

blister,17

Propeller

noise,9 Protrudingobjects,7 Purpose

thismanual,5

R

Retractable

installation,24

S

Self-lockingtaps,32 Shielding

steelconduit,30 Simradwebsite,5 Smoothsurface,12,18–20,22 Splicing

transducercable,29 Steelconduit

diameter,30

qualities,30

shielding,30

why,30 Steelhull

cablegland,26 Steeltank

ushmounting,19 Streamlinedblister

example,13,15 Sunlight

doNOTexpose,31 Supportbar,12,18–19 Surface

smooth,12,18–20,22

T

Taps,self-locking,32 Toe-in

blister,16 Transducer

lifting,31

ordernumber,6

recommendedlocation,10 Transducercable

splicing,29 Transducerplug

drawing,38

W

Woodenhull

cablegland,27

48

307324/B

Index

307324/B

49

ISBN-13:978-82-8066-080-0

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2009KongsbergMaritimeAS

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