Furuno CI-35, Installation Manual

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2-4
2.4 Hull (Transducer) Unit for CI-35H
Steel Hull Vessels (See page D-4)
1. Select a mounting place on the hull bottom, referring to chapter 1. (Since the
transducer cable is comparatively thick, select a mounting place for the thru-hull
pipe where the cable can be easily led into the cable gland.).
2. If necessary, weld a doubling plate (shipyard supply) to the hull bottom.
3. Unpack the transducer casing and determine the projecting length, making it 350
mm or cut it considering the rising angle of the ship’s hull.
Weld the casing in parallel with ship’s fore-aft line with an accuracy of better than
+1°.
The transducer face should be horizontal at cruising speed.
4. Make a hole for the thru-hull pipe in the hull bottom. Before welding the thru-hull
pipe, remove the rubber packing from the thru-hull pipe. Weld the thru-hull pipe.
Replace the rubber packing.
5. Make a hole of 10 to 20 mm diameter on the stern side of the casing to allow water
to penetrate the transducer casing.
6. Weld the casing to the hull bottom. Do not remove the transducer fixing flange to
prevent the casing from being deformed.
Transducer casing
Bow
Dimple to bow
Transducer Fixing Flange
Fig.2-5 Fixing Transducer Casing
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