Installation manual

Towedbodydesign
TOWEDBODYDESIGN
ThetowedbodyusedtoholdtheES333-7CDSplit-beam
transducerisn
o t providedbySimrad.Thedesignand
manufacturingofsuchabodymustbemadebyyourown
organisation,orbyathirdpartyyouwishtoengagetodothis.
Duringthedesignphase,thefollowingconsiderationsmustbe
made.
Figure1Example,towedbody
A
B
C
D
E
(CD017201C)
ATransducermountedthroughthebodyplatingbymeansof
amountingring
BWatertightcompartmentwithtransceiverelectronics
CTailn
DTowlinewithbuilt-incablesforpowersupply,controland
datatransfer(ethernet)
EFairings
Locationoftransceiverelectronics
Ifyourtowedbodydesigncomprisesawatertightcompartment,
youmaychoosetoinstallthetransceivercircuitryinsidethe
towedbody.Inordertodoso,youmustinstallwatertightsockets
onthebulkheadinordertoconnectthetransducercable(s),
controlanddatatransfer(Ethernet)andoperatingpower.By
usingathisarrangement,youavoidthesignallossyoumay
experienceusingalongtransducercable.
Depth
Theupperwaterlayersoftheseacontainamyriadofsmall
airbubblescreatedbythebreakingwaves.Inheavyseasthe
uppermost5to10metresmaybeair-lled,withthehighest
concentrationsnearthesurface.Airbubblesabsorbandreect
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