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1. MOUNTING
1.2.2
How to mount a transducer inside the hull
This installation method affects the ability to detect the bottom,
fish and other objects because the ultrasound pulse is weakened
when it passes through the hull.
Therefore, refrain from this mounting method for a transducer
that supports the RezBoost™ (Enhanced Mode), ACCU-FISH™
and/or bottom discrimination display feature.
Remarks on installation
This method is useful when mounting a transducer inside the hull of FRP ship, how-
ever, it affects the ability to detect the bottom, fish and other objects.
• Do the installation with the ship moored at a dock, etc. The water depth should be
6.5 to 32 feet (2 to 10 meters).
• Turn off the engine.
• Do not power the unit with the transducer in the air, to prevent damage to the
transducer.
• Do not use this method on a double layer hull.
• Before attaching the transducer to the hull, check that the site is suitable, by following
steps 1 to 3 in the installation procedure below.
Necessary tools
The following tools are required:
• Sandpaper (#100)
• Marine sealant
• Water-filled plastic bag
Selecting a location to install the transducer
Install the transducer on the hull plate inside of the engine room. The attenuation of
the ultrasound pulse varies with the thickness of the hull. Select a location where at-
tenuation is the lowest.
Select 2-3 locations considering the four points mentioned below.
• Mount the transducer at a location 1/2 to 1/3 of the length of your boat from the
stern.
• The mounting location is between 15 to 50 cm from the centerline of the hull.
• Do not place the transducer over hull struts or ribs which run under the hull.
• Avoid a location where the rising angle of the hull exceeds 15°, to minimize the
effect of the boat's rolling.
1-10
NOTICE
1/2
Centerline
50 cm
15 cm
15 cm
50 cm
1/3
Transducer mounting location
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