Raymarine 465 - Manual (Page 23)

12 Installation
8. It is very important to seal the opening around the transducer using
a high-quality marine sealant suitable for underwater use. After
installation, do not leave your boat in the water for any amount of
time without checking for leaks.
Installation Notes – In-Hull Transducer
Detailed instructions for this installation will be included with the trans-
ducer. In this section, we will note just a few important points.
1. Choose the best mounting location:
For outboard powerboats – Install as far aft as possible
For inboard/outboard powerboats – Install close to the engine(s)
For inboard powerboats – Install forward of the propeller(s) and
shaft(s)
For sailboats – Install near the centerline of the hull and forward of
the leading edge of the keel
2. An in-hull transducer may only be installed in a fiberglass hull which
is no more than 1" (25 mm) thick. The in-hull transducer may not be
installed in wood or aluminum hulls.
3. Use the standard in-hull transducer if it will be installed in a flat part
of the hull, or a section with no more than 10° of deadrise. Use the
angled in-hull transducer if the mounting location has up to a 22° of
deadrise.
4. Do not try to compensate for the angle of the hull by fairing the
epoxy adhesive on the face of the transducer.
5. Use the epoxy supplied with the in-hull transducer, or an equivalent
epoxy glue. Do not use any other type of adhesive, including silicone
or RTV adhesive.
Installation Notes – Trolling Motor Transducer
Detailed instructions for this installation will be included with the trans-
ducer. This type of transducer is attached to the horizontal gear case of
the trolling motor. The installation is simple, but is important to keep the
transducer away from the wash from the propeller, and from turbulence
caused by parts of the hull.