Marine GPS System User Manual

1-17

Installing the transom mount transducer

This type of mounting is very commonly employed, usually on

relatively small I/O or outboard boats. Do not use this method on

an inboard motor boat because turbulence is created by the propel-

ler ahead of the transducer.

There are two methods of installation: flush with hull (for flat hulls)

and projecting from hull (for deep V-hulls).

Flat Hull Deep V-hull

>50 cm

Figure 1-23 Transom mount transducer mounting locations

Installing the transom mount transducer flush with hull (for

flat hulls)

A suitable mounting location is at least 50 cm away from the en-

gine and where the water flow is smooth.

1. Drill four pilot holes in the mounting location.

2. Attach the transducer to the bracket with tapping screws (sup-

plied).

3. Adjust the transducer position so the transducer faces right to

the seabed.

Note: If necessary, to improve water flow and minimize air

bubbles staying on the transducer face, incline the transducer

about 5° at the rear. This may require a certain amount of

experimentation for fine tuning at high cruising speeds.

4. Fill the gap between the wedge front of the transducer and tran-

som with epoxy material to eliminate any air spaces.