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INBOARD TRANSDUCER HOUSING KIT
This kit contains the necessary parts and materials to install a transducer within the hull of a glassfibre vessel. It should be noted
that whilst the accuracy of the Seafarer echo sounder will in no way be affected by installing the transducer inboard, the deep-
water range will be restricted. The loss of deep-water performance can vary from between 15 and 50%, and is dependent not
only upon the thickness but also the quality of the glassfibre hull.
It is not recommended that the transducer be installed where it is known the thickness of glassfibre exceeds ¾”, nor is it
recommended for use on hulls of steel, aluminium or wood, although this method of installation has been known to operate on
these materials with acceptable results.
CONTENTS OF KIT
1. Tube 4” long.
2. Housing cap with self tapping screw.
3. Bottle or sachet of oil
4. Adhesive filler kit.
METHOD OF INSTALLATION
1. With the boat in 2030 feet of water, determine a position from inside the hull where the Seafarer gives a reading of the
correct depth with the transducer-face pushed hard against the inside of the hull and the instrument gain-control turned to
maximum (it will be necessary to wet the face of the transducer with water during this test to provide a good interface
between the transducer and the hull). Operate the engine(s) during the test to see that there is no electrical interference,
keeping the co-axial transducer cable away from the engine(s) and associated electrical equipment. If minimal or no
interference is displayed by the Seafarer, mark the chosen transducer position inside the hull.
2. The preparation of the chosen position to fix the transducer is most important. The surface must be clean and dry, and it is
essential to remove dirt, oil, grease, paint etc. Only then can assembly commence. To prepare, take a sharp, hard tool (the
sharp edge of a hand file or pointed knife is ideal). Scratch into the surface of the hull in all directions until rough, and then
sand with coarse emery cloth, sandpaper or similar. Remove the dust particles formed. See illustration 1
3. Next take the tube supplied, and with a rule or straight edge, holding the tube upright, mark the tube to match the angle of the
hull. See illustration 2. The tube can then be cut with a fine blade saw to the required angle. See illustration 3.
4. Take the tube and with the side of the sawblade, or with coarse sandpaper, roughen all around the tube on the end you have
cut for 1½ inches (40 mm) along the tube. See illustration 4.
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  • Is it possible to buy a replacement face dial for my Seafarer 700 echo sounder? and if yes, where?
    Thanks, Mike FitzG Submitted on 16-11-2021 at 15:47

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