Simrad TRANSDUCER - INSTALLATION GENERIC REV H Installation Manual page 17

Ways of mounting the transducer
Toe-in
The primary consideration must be to allow laminar water flow.
In most cases this is achieved by placing the transducer (A)
parallel with the keel (C). However, if the transducer is located
close to the bow, the front of the transducer may have a few
degrees (5 to 8°) toe-in towards the bow. If you have a planing
hull, the toe-in must be 0°.
F
C
A
B
(CD017007D)
(A) = Transducer
(B) = 5 to 8° on deplacement hulls, 0° on planing hulls
(C) = Keel
(F) = Forward
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