The Garmin GT56UHD-THP is an advanced all-in-one plastic through-hull (THP) transducer that combines Ultra HD ClearVü™ and Ultra HD SideVü™ scanning sonar with a traditional high/wide CHIRP sonar. It is designed for anglers who want maximum image clarity, excellent target separation, and high versatility – regardless of water depth or fishing method.
With Ultra HD scanning sonar, you get extremely detailed images of structures and fish directly below and off the sides of the boat, while the traditional high/wide CHIRP sonar (150–240 kHz) provides clear fish arches and precise depth readings down to 244 meters (800 ft) in freshwater.
The GT56UHD-THP supports 455 kHz, 800 kHz, and 1,000 kHz, so you can always choose the optimal frequency for your fishing spots. The transducer can be mounted on the transom, trolling motor, or through-hull, and comes with the necessary mounting hardware. The built-in fast-response temperature sensor ensures accurate, real-time temperature readings.
Key features
Ultra HD ClearVü™ – crystal-clear details directly below the boat
Ultra HD SideVü™ – see structures and fish far out to the sides
Traditional high/wide CHIRP sonar with superior target separation
Multiple frequencies: 455, 800, and 1,000 kHz for all depths
Vivid, high-contrast color palettes
Flexible mounting: transom, trolling motor, or through-hull (plastic)
