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Transom Mount

TRANSOM MOUNT

The transom installation, which is the most widely used, places the transducer on the outside of

the boat hull. This technique produces the least signal loss, and provides a way to adjust the

transducer after installation. The mounting hardware included is designed to protect both the

boat and the transducer should the boat strike debris in the water or when trailering.

Turbulence

It is very important to locate the transducer in an area that is relatively free of turbulent water. As the boat moves through the

water, turbulence is generated by the weight of the boat and the thrust of the propeller(s) – either clockwise or counterclockwise.

Consider the following to ﬁnd the best location with the least amount of turbulence:

Avoid areas where there is turbulent water ﬂow. Turbulent water is normally conﬁned to areas immediately aft of ribs, strakes,

or rivets on the bottom of the boat, and in the immediate area of the propeller(s). The best way to locate turbulence-free water

is to view the transom while the boat is moving. This method is recommended if maximum high-speed operation (up to 65 mph)

is a high priority. If this is not possible, select a location on the transom where the hull forward of this location is smooth, ﬂat,

and free of protrusions or ribs.

Observe your propeller’s direction of rotation (in forward, as you're facing the stern of the boat from behind). Clockwise

propellers create more turbulence on the port side. Counterclockwise propellers create more on the starboard side.

Ensure there is adequate distance from the propeller(s). On outboard or inboard/outboard boats, it is best to locate the

transducer at least 15" (38.1 cm) to the side of the propeller(s). See the Side Imaging section for additional Side Imaging

mounting requirements.

The ideal mounting location (right of the propeller[s]). It is important to note that if you plan to trailer your boat, do not mount

the transducer too close to trailer bunks or rollers to avoid moving or damaging the transducer during loading and unloading

of the boat.

For boats with stepped hulls, it may be possible to mount the transducer on the step. Do not mount the transducer on the

transom behind a step to avoid popping the transducer out of the water at higher speeds. The transducer must remain in the

water for the control head to maintain the sonar signal.

The transducer must be mounted so that it is parallel with the waterline, but fully submerged in the water during operation.

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Transom Mounted Transducer