The Garmin GT23M-TM is a versatile transom-mount transducer for coastal and offshore anglers who want reliable traditional CHIRP sonar combined with CHIRP ClearVü™ scanning sonar. It provides crisp fish arches, high target separation, and a clear view of the bottom and structures, even under demanding conditions.
The traditional CHIRP Mid Band sonar (80–160 kHz) provides stable depth readings and good penetration in both shallow and deep water, while the ClearVü™ CHIRP (260/455 kHz) produces photo-like images of reefs, wrecks, and bottom structure, making it easy to distinguish fish from their surroundings.
The GT23M-TM is designed for highly flexible transom mounting, supports transom angles from 0 to 70°, and comes with an integrated temperature sensor. This makes it an ideal choice for both recreational and serious fishing in both coastal and offshore waters.
Key features
CHIRP Mid Band traditional sonar for coastal and offshore
High-detail CHIRP ClearVü™ scanning sonar
600 W traditional power and 500 W ClearVü power
Crisp fish arches and clear structure viewing
Transom mount with support for 0–70° transom angles
Built-in temperature sensor
