Furuno CH-37 manual Soundome Painting, Measuring ship’s semi-permanent inclination angle

4.By using a clinometer or other means, measure ship’s semi-permanent incli- nation angle. Take the polarity of the angle as follows:

+ 0 – + 0 –

ROLL: Starboard up: +, Starboard down: -

PITCH: Stern up: +, Stern down: -

Figure 3-5 Measuring ship’s semi-permanent inclination angle

5.Adjust the potentiometers R35 (ROLL) and R36 (PITCH) on the SNR Board (06P0228) in the display unit so angle readouts on the screen agree with the angles measured at step 4.

3.5Soundome Painting

When the soundome is painted to keep marine life off the transducer, observe the following precautions:

•Use only anti-fouling paint type MARINE STAR 20 (Manufacturer: Chugoku Marine Paint Co., Ltd., Japan).

•Paint only the plastic portion of the dome. Painting the metal parts causes cor- rosion.

Paint area

Figure 3-6 Where to paint the soundome

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