Sensors and transducers

A sonar system uses sound waves to detect depth, fish, and seabed structure.

At the heart of every system is the transducer, the sensor that sends and receives sound pulses underwater, converting them into electrical signals. These signals are then processed by a sonar module — either built into your fishfinder or chartplotter, or as a separate “black box” — which turns the raw data into clear images and readings on your screen.

Explore the underwater world with sonar systems from Raymarine and Humminbird. Choose from in-hull, through-hull, or transom-mounted transducers and modern sonar systems with CHIRP, DownVision, and Side Imaging technology. Perfect for fishing, cruising, or seabed mapping, these systems provide precise and reliable underwater insight.