Operation performance

Satisfactory echo sounder performance depends primarily on the transducer installation.
The most common transducer installation is a transom mount.
The transducer should be mounted at the bottom of the hull as close to the keel as possible and 1/3rd aft so that turbulent water from the bow and propeller noise do not affect its performance.
The transducer should preferably be mounted on the side of the boat where the propeller chops down into the water to avoid aeration and turbulence.
Performance can also be negatively affected if the transducer is mounted near engines, alternators, or seawater inlets and outlets.