Through-Hull Transducers

Through-hull transducers are mounted through a hole drilled in the bottom of the boat and protrude directly into the water. This type of transducer generally provides the best performance.

Through-hulls are recommended for displacement hulls and boats with straight-shaft inboard engines. You'll also need a fairing block that allows the transducer to be mounted properly. Through-hull transducers must be installed with a fairing to ensure proper alignment and a secure fit.

Through-hull transducers must be positioned in front of the propeller, rudder, keel or anything else that may create turbulence. They must be mounted in a position that is always underwater and angled straight down.

Tilted Element Transducers

Tilted Element transducers are mounted through a hole drilled in the bottom of the boat and protrude directly into the water. Tilted Element transducers offer performance similar to through-hulls.

Tilted Element transducers are mounted flush against the hull. Unlike traditional Through-Hull transducers, Tilted Elements do not need a fairing block. The element inside the transducer acts as a leveling agent, working with the deadrise (angle) of your hull to ensure the transducer's beam is directed straight down.

These transducers will generally come in two configurations based on your hull type, a 12º and 20º version. Select a 12º tilt when the deadrise of your hull falls in the 8º to 15º range. Select the 20º tilt if your hull's deadrise is in the 16º to 24º range.

When installing a Tilted Element transducer make sure to position it in front of the propeller, rudder, keel or anything else that may create turbulence. They also must be mounted in a position that is always underwater and angled within the appropriate deadrise range.