Garmin GT56UHD-TM Transom Mount Transducer with Ultra High-Definition Scanning Sonar

Marine transducer delivering ultra high-definition ClearVü and SideVü scanning sonar alongside traditional CHIRP sonar, enabling anglers to see fish and structure with exceptional clarity down to 800 ft. The transom mount design ensures stable performance at speed, while the built-in temperature sensor provides real-time water temperature data for a complete fishing picture.

Advantages

The GT56UHD-TM combines three sonar technologies in one compact unit. UHD ClearVü and SideVü operate at 800 kHz and 1000 kHz, producing near-photographic images of the underwater environment. Traditional CHIRP sonar sweeps a wide 150-240 kHz range, delivering crisp fish arches and bottom detail. With 500 W of power per element, this transducer maintains signal clarity even in deep or murky water. The 12-pin orange connector plugs directly into compatible Garmin chartplotters, eliminating the need for adapters.

Suitable for

• Freshwater and saltwater anglers targeting fish in depths up to 800 ft
• Boaters requiring high-resolution side imaging to scan large areas quickly
• Users of Garmin ECHOMAP UHD, ECHOMAP Ultra, and GPSMAP series chartplotters
• Transom-mounted installations on fiberglass or aluminum boats

Key specifications

• Transducer type: Transom mount
• Traditional sonar: CHIRP High-Wide (150-240 kHz), 500 W, max depth 800 ft (244 m)
• ClearVü/SideVü: UHD 800 kHz and 1000 kHz, plus 455 kHz; 500 W; max depth 400 ft (122 m) for ClearVü, max range 250 ft (76 m) per side for SideVü
• Beamwidths: Traditional 24-16 degrees; UHD ClearVü/SideVü 0.6°x105° (800 kHz), 0.9°x75° (1000 kHz); ClearVü/SideVü 1.4°x53° (455 kHz)
• Connector: 12-pin orange Garmin connector
• Cable length: 20 ft (6 meters)
• Temperature sensor: Yes
• Mounting options: Transom mount, trolling motor mount (with optional adapter)
• Housing material: Plastic
• Waterproof rating: IPX7
• Compatibility: Garmin ECHOMAP UHD, ECHOMAP Ultra, GPSMAP series (compatible models)

Recommendations

For anglers who demand the clearest possible view of what lies beneath, the GT56UHD-TM is an essential upgrade. Its triple-sonar capability and powerful 500 W output make it a top choice for serious freshwater and saltwater fishing.