Interphase Advantage User Manual page 17

DANGER: If the boat is kept in saltwater or in an area with
excessive marine growth it is recommended that the transducer
be coated with an anti-fouling paint. USE ONLY WATER
BASED ANTI-FOULING PAINT. DO NOT USE
KETONE BASED PAINTS. Ketone based anti-fouling paint
will attack the plastic materials used in the transducer. See
page 42 for a list of tested paints. This is not an exhaustive
list. If you are using other paints, verify with the paint
manufacturer that the paint does not react with urethane
plastic.
Bronze Hex Nut
Boat's
Hull
Outer part of
fairing block
Wood or
Plastic
Fairing
Block (Add
sealing
compound
between
fairing block
& hull).
Transducer
17