The Garmin GT23M-TH is a powerful transducer for coastal and offshore fishing, developed for sailors and anglers who want precise fish arches, high target separation, and clear structure imaging even at greater depths. The transducer combines traditional CHIRP Mid-Band sonar with CHIRP ClearVü™ scanning sonar, providing a detailed and easy-to-interpret view of what is happening under the boat.
The traditional CHIRP Mid-Band sonar (80–160 kHz) delivers excellent depth performance and stable readings in both coastal and offshore environments. ClearVü™ CHIRP (260/455 kHz) provides photo-like images of the bottom, reefs, wrecks, and structures, making it easy to distinguish fish from their surroundings.
The GT23M-TH is an 8-pin through-hull transducer with integrated temperature sensing, designed for boats where robustness, range, and reliability are essential. It supports hull deadrise angles of up to 25° and is an ideal choice for larger boats fishing in demanding conditions.
Key features
CHIRP Mid-Band traditional sonar for coastal and offshore
CHIRP ClearVü™ scanning sonar with high detail
600 W traditional power and 500 W ClearVü power
Sharp fish arches and clear structure imaging
Through-hull mounting with support for deadrise angles up to 25°
Built-in temperature sensor
