External Mounting - Simrad TRANSDUCER - INSTALLATION GENERIC REV H Installation Manual

External mounting

851-160164/H
Certain transducers have a streamlined housing, and these are
designed for installation outside the hull.
These transducers are mainly used on smaller vessels. A location
approximately 0.5 m aside from the keel may be adequate for
the passage of water between the keel and the transducer. The
figures illustrate external mounting of transducers on steel hulls
and on wood or polyester hulls respectively.
Smooth surface
Ensure that the surface of the transducer face, the hull plating
and putty around the transducer is as even and smooth as
possible. Obstructions on these surfaces will create problems
with turbulant flow.
Mounting screws must not be extruding from the transducer, and
the space around the screws must be filled with a compound (C)
and/or a locking ring.
Ways of mounting the transducer
11