Installation manual

SimradES70
rule.Certainthrusterdesignscombinedwithitsphysicallocationonthehullmaystill
offersuitabletransducerlocationsnearthethruster.Ifyouareindoubt,consultanaval
architect.
Mountthetransducerwithaslightlyinclinedtransducerface
Ideally,thetransducerfaceshouldbemountedinparallelwiththeseasurfacewhen
thevesselisinnormaltrim,asthiswillprovidethemostaccurateechoinformation.
However,itisalsoveryimportantthatthew
a t e r  o w overthetransducerfaceislaminar.
Inordertoensurelaminarow,thetransducerfacemaybetiltedslightlyupwardsin
relationtothewaterow.Thisallowstheowingwatertomeetthefacedirectly,and
assureslaminarow.Theinclinationanglemusthoweverbedeterminedcarefully.The
anglemustbesmallontransducerswithnarrowbeamangles.Asaruleofthumb,mount
transducerswithbeamanglessmallerthansevendegreeswithminimuminclination
angle.Thesmallerbeamangleyourtransducerhas,thesmallertheinclinationanglecan
be.Ensurethatyoudonotmountthetransducerwithanegativeinclinationangle.This
maycauseturbulenceunderthetransducerface,andreducedechosounderperformance.
Summaryandgeneralrecommendations
Someoftheaboveguidelinesareconicting,andeachcasehastobetreatedindividually
inordertondthebestcompromise.Generallythepropellernoiseisthedominantfactor,
andarecommendedtransducerlocationisintheforepartofthehull,withmaximum
distancefromthebowequaltoonethirdofthetotallengthofthehullatthewaterline.
Figure22Generalrecommendationfortransducerlocation
ATransducer
BInclinationangle
CHulllengthatwaterline
DMaximum1/3ofthehulllengthatwaterline(C)
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