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Installing a Transom Mount Transducer

When installing a transom mounted transducer it is very important that you closely follow the installation instructions provided within each transducer kit. With that said, there are some basic guidelines to consider when mounting this type of transducer:


Transom Mounted Depth Transducer

  • The location should be as close to the center of the boat as possible, but on the side of the downward swing the propeller. On the majority of boats, this will be on the starboard (right) side.
  • On boats with outboard or inboard/outboard motors, the location should be at least 15 in. (38 cm) away from the propeller.
  • The location should not be in the path of the propeller on single-drive boats. The transducer can cause cavitation that can degrade the performance of the boat and damage the propeller.
  • The location should not be downstream of any strakes, struts, fittings, water intake or discharge ports, or anything that creates air bubbles or causes the water to become turbulent.
  • On twin-drive boats, the location should be between the drives, if possible.
  • Avoid locations where the transducer might be jarred when launching, hauling, or storing.
  • The transducer should be oriented so that it is parallel with the waterline

Below is an image of a sample installation and isn't applicable to every boat.


Speed Sensor

The speed sensor's installation is not as critical as the depth transducer installation. The guidelines will be similar to those above but there are other considerations:

  • Take care to avoid mounting it too close to a transom mounted depth transducer, as it can potentially cause cavitation that will degrade sonar performance.
  • If you have the room, it's advisable to mount the speed sensor on the port (left) side of the engine propeller.

Below is an image of a sample installation and isn't applicable to every boat.

If you follow closely the packaged manuals and the tips outlined above, you will have the best opportunity to have an easy installation and optimal performance from your transducer.