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Inside the Hull Transducer Installation
In-hull mounting generally produces good results in single thickness fiberglass-
hulled boats. Humminbird cannot guarantee depth performance when
transmitting and receiving through the hull of the boat, since some signal loss
occurs. The amount of loss depends on hull construction and thickness, as
well as the installation position and process.
NOTE: In-hull mounting requires an installed and operational control head.
NOTE: The integral temperature probe will not work with in-hull mounting, so you
may either want to consider purchasing a Temp Sensor or obtaining a different
transducer. See the FAQ (Frequently Asked Questions) section of our Web site at
humminbird.com or call Customer Service at 1-800-633-1468.
This installation requires slow-cure two-part epoxy. Do not use silicone
or any other soft adhesive to install the transducer, as this material
reduces the sensitivity of the unit. Do not use five-minute epoxy, as it
has a tendency to cure before all the air bubbles can be purged, thus
reducing signal strength.
Determine the Transducer Mounting Location
Decide where to install the transducer on the inside of the hull. Consider the
following to find the best location:
• Observe the outside of the boat hull to find the areas that are mostly free
from turbulent water. Avoid ribs, strakes and other protrusions, as these
create turbulence (Figure 27).
• As a general rule, the faster the boat can travel, the further aft and closer
to the centerline of the hull the transducer has to be located in order to
remain in contact with the water at high speeds (Figure 28).
Inside the Hull Transducer Installation
18
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