GT36UHD-TM Sonar - UHD ClearVü/SideVü Transom Mount
In stock
Technical specifications
Technical specifications
| Supported sonar technologies | ClearVü UHD, SideVü UHD |
| Operating voltage | 10-35 |
| Fishfinder frequencies | 350, 800, 1200 |
| Peak power | 4000.0 |
| Max depth reading | 244.0 |
| Transducer material | Plastic |
| Sonar connector type | Garmin 12-pin |
| Cable length | 6.0 |
| Integrated temperature sensor | Yes |
| Compatible displays | Garmin chartplotters compatible with UHD (ECHOMAP UHD, ECHOMAP Ultra, GPSMAP series) |
| Mounting type | Transom panel |
| Certifications | CE |
| Antifouling Recommended | Water-based antifouling paint |
| Beam coverage angle | Traditional: 24-16°, ClearVü UHD: 0.9x52°, SideVü UHD: 0.5x52° |
| Breakaway Mount Feature | Yes |
| Cable Cutting Restriction | Voids warranty |
| Diamètre de découpe pour entrée de câble | 25 |
| CHIRP high frequency | 760-880, 1060-1170 |
| CHIRP low frequency | 340-440 |
| Drill Bit Sizes Required Mm | 4, 3.2, 25 |
| Engine Configuration Mounting Guidance | Install between engines for twin-engine boats; avoid prop wash for single-engine boats |
| Fiberglass Installation Precaution | Countersinking of the gelcoat recommended to prevent cracks |
| Hull Material Compatibility | All (fiberglass, aluminum, wood, etc.) |
| Hull Type Restriction | Not recommended for stepped hulls |
| Integrated speed sensor | No |
| Integrated Spray Guard | Yes |
| Marine Sealant Required | Yes |
| Max Extension Cable Length | 9 |
| Max Optimal Speed Kph | 55 |
| Mounting Distance From Propeller Cm | 38 |
| Mounting hardware included | Screws, washers, nuts, bolts |
| Mounting Location Avoidance | Avoid behind strakes, frames, fittings, through-hulls, or turbulence zones |
| Multi Transducer Spacing Cm | 60 |
| Propeller Rotation Mounting Guidance | Starboard side for clockwise propeller, port side for counter-clockwise propeller |
| Release year | 2021.0 |
| Simultaneous Transducer Operation | Ability to use multiple depth sounders with different frequencies simultaneously |
| Trailered Boat Suitability | Yes |
| Transducer Extension Below Hull Mm | 3.5 (fiberglass), 10 (aluminum) |
| Vessel Type Restriction | Not recommended for sailboats (excessive heel) |
| Warranty | 2.0 |
Detailed description
Detailed description
The Garmin GT36UHD-TM sonar represents an advanced solution for underwater detection, offering ClearVü and SideVü capabilities in ultra high definition (UHD). Designed for transom mounting, this sonar is optimized to deliver exceptionally clear images, enabling users to accurately identify structures and fish beneath and alongside their vessel. It serves as a high-performance alternative to Garmin’s through-hull models (GT-TH), while providing greater installation flexibility for hulls that do not require full penetration. Compared to LiveScope™ (LVS-TH) transducers, which offer real-time forward and downward views, the GT36UHD-TM excels in delivering detailed UHD still images for bottom mapping and lateral detection.
Optimal Installation and Performance
The Garmin GT36UHD-TM transducer is designed for transom mounting, a method favored for its simplicity and compatibility with all hull materials. For optimal performance, the sonar must maintain constant contact with non-turbulent water and is recommended for speeds below 34 mph (approximately 55 km/h). It is particularly well-suited for trailerable boats, especially when paired with a foldable bracket. To ensure the best signal quality, the transducer must be mounted at least 38 cm (15 inches) from the propeller and away from turbulence sources such as chines, strakes, or prop wash. Correct positioning, parallel to the waterline and slightly below the hull (3.5 mm for fiberglass, 10 mm for aluminum), is essential.
Compatibility and Technical Considerations
The Garmin GT36UHD-TM sonar features an integrated spray shield to minimize water spray. For long-term installations in aquatic environments, it is recommended to apply water-based antifouling paint to the transducer and mounting hardware. It is critical to update the Garmin display’s software when installing this transducer to ensure full compatibility and functionality. To avoid electromagnetic (EMI) and acoustic interference, the transducer cable must be routed away from ignition wires, batteries, electric motors, radar, or any other equipment generating electrical noise or sound waves. A minimum spacing of 60 cm (24 inches) between multiple transducers is advised to prevent acoustic interference. This model is not recommended for sailboats due to excessive heel, nor for stepped hulls that may create turbulence harmful to the signal.
Expert opinion
Expert opinion
Pol CONIN
Digital Manager
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