Sonda GT56UHD-TH - transversal UHD ClearVü/SideVü

Yes, the Garmin GT56UHD-TH transducer is designed to be compatible with Garmin chartplotters. However, it is imperative to update your Garmin chartplotter’s software when installing this transducer to ensure compatibility and optimal performance. Update instructions are typically found in your chartplotter’s user manual on support.garmin.com.

Anti-rotation bolts are crucial for the safety and performance of the GT56UHD-TH depth sounder. They are included with the device and must be installed to prevent the transducer from rotating when the boat is underway. Failure to install them could result in damage to your vessel and compromise the reliability of sonar readings by altering the transducer's orientation.

Location is critical for optimal performance and must be chosen carefully. Key considerations:

Non-turbulent water: The transducer must be mounted in an area with clean water, free of air bubbles or turbulence caused by strakes, reinforcements, fittings, scuppers, or water discharges.Distance from engine/propeller:For outboard and sterndrive boats: forward and near the engine(s).For inboard boats: forward and away from the propeller and engine shaft.For single-propeller boats: do not mount in the propeller’s path to avoid cavitation.For twin-propeller boats: if possible, between the propellers.Specific hull types:Planing hulls: forward of the first chine.Displacement hulls: approximately 1/3 of the waterline length from the bow, and 150 to 300 mm to the side of the centerline.Long-keel hulls: slightly angled toward the bow, parallel to the centerline.Fin-keel hulls: 25 to 75 cm forward of the keel and max 10 cm to the side of the centerline.Avoid impacts: Do not mount in an area where it could be struck during launching, beaching, or storage.The transducer must be mounted parallel to the bow-stern axis of your vessel.

A fairing block is an accessory that allows you to position the transducer parallel to the waterline, improving the accuracy of sonar data. You must measure the deadrise angle of your boat's hull at the installation location. If this angle exceeds 5°, using a fairing block is recommended for optimal transducer mounting.

Hole dimensions to drill in the hull vary slightly depending on hull type:

For the stem hole (central hole for the transducer stem):
Fiberglass hulls (with or without core): 25 mm (1 inch) diameter.
Metal hulls: 32 mm (1 1/4 inch) diameter.
For the anti-rotation bolt holes:
Fiberglass hulls (with or without core): 9 mm (3/8 inch) diameter.
Metal hulls: 13 mm (1/2 inch) diameter.
It is recommended to use the mounting template provided in the product box to mark hole locations precisely.

The main advantage of a through-hull transducer like the Garmin GT56UHD-TH is its ability to provide optimal and reliable sonar readings. By being installed directly through the hull, it sits in clean, non-turbulent water, minimizing interference and ensuring better clarity and accuracy of sonar images. This is particularly beneficial for ultra-high-definition scanning functions.

For installing the GT56UHD-TH transducer, it is recommended to use a flexible, fast-curing marine sealant specifically designed for below-waterline applications. This type of sealant ensures a solid and durable watertight seal between the transducer (or fairing block, if used) and your boat's hull, protecting against water infiltration.