GT30-TH - Sonde traversante inox ClearVü™/SideVü™ 500W (455/800 kHz) pour inclinaisons de coque inférieures à 5° + température - (12 broches) - Garmin

Sonde GT30-TH - traversante inox ClearVü/SideVü - visuel officiel Garmin 2

Sonde GT30-TH - traversante inox ClearVü/SideVü - visuel officiel Garmin 3

Sonde GT30-TH - traversante inox ClearVü/SideVü - visuel officiel Garmin 4

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Garmin

010-01961-10

GT30-TH Transducer - In-Hull Stainless Steel ClearVü/SideVü

The Garmin GT30-TH transducer is a 500W through-hull stainless steel solution, featuring ClearVü™ and SideVü™ technologies (455/800 kHz) with a temperature sensor. Designed for hulls with an inclination of less than 5°, it delivers detailed and reliable underwater imaging. The kit includes the transducer, anti-rotation bolts, rubber and nylon washers, and M8 and 35 mm hull nuts.

Configuration: Depth sounder only

Depth sounder only Through-deck fitting

Retail priceBenefit from the professional rate

£438.70 GBP

£438.70 GBP ~~£544.38 GBP~~

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In stock

Free pickup point from €150 in France
Pickup at Skysat possible

Custom installation

Trust Skysat to install the equipment on board

Request a quote

Installers near you

thanks to our network of approved installers

Find an installer

Support service

Opt for additional installation assistance

Technical specifications

Supported sonar technologies	ClearVü, SideVü
Fishfinder frequencies	455/800 kHz
Peak power	500.0
Transducer material	Stainless steel
Sonar connector type	12-pin
Product width	110 mm
Integrated temperature sensor	Yes
Product height	50 mm
Compatible displays	Garmin chartplotters with 12-pin connector
Product depth	30 mm
Bus compatibility	Garmin Owner
Wired network	Garmin Owner
Wireless connectivity	No
Mounting type	Transom
Certifications	CE
Integrated speed sensor	No
Release year	2022.0

Detailed description

The Garmin GT30-TH transducer is an in-hull stainless steel solution designed to provide advanced sonar imaging capabilities for demanding boaters. Integrating ClearVü™ and SideVü™ technologies, it operates on 455/800 kHz frequencies with 500W power, enabling detailed and precise visualization of underwater structure and fish. This transducer is specifically suited for hulls with inclines under 5°, ensuring optimal performance without requiring a tilt compensating block. For hulls with an incline greater than 5°, using a tilt compensating block is recommended to maintain the sonar beam perpendicular to the waterline.

Performance and technical integration

The GT30-TH stands out from transom-mount transducers with its permanent through-hull installation, delivering excellent signal quality even at high speeds and greater depths, without turbulence or dropout issues. It also includes a temperature sensor, enriching the data available to the chartplotter. Compatible with Garmin chartplotters via a 12-pin connection, it requires a software update on the chartplotter for seamless integration and operation. This transducer is ideal for powerboats and sailboats, offering a robust alternative to transom-mount models like the GT20-TM or GT22-TM, which are more prone to external damage and turbulence interference at high speeds. For more sophisticated imaging needs, Garmin offers LVS-TH transducers with LiveScope™ or PS51 multibeam, positioning the GT30-TH as a high-performance and durable option for side and down imaging.

Installation and durability

The stainless steel in-hull design of the Garmin GT30-TH ensures increased durability in the marine environment. While installation requires precise hull drilling for the main through-hull fitting and included anti-rotation bolts, it is detailed for various hull types (fiberglass with or without core, metal). Anti-rotation bolt installation is critical to prevent device rotation during navigation. Strategic positioning is essential, away from propellers, chines, keels, and any source of turbulence or electromagnetic interference, to maximize SideVü signal clarity. Optimal performance is achieved in non-turbulent water, and the transducer must be mounted parallel to the boat’s fore-aft axis. Marine-grade materials and mounting method ensure long-term reliability even under intensive use conditions.

Documentation

Type	Nom
	Mounting template - Mounting template for Garmin GT30-TH transducer (EN)
	Installation manual - Garmin GT30-TH thru-hull transducer installation (EN)
	Installation Guide - Marine Transducer Placement Guide for Garmin (EN)

Expert opinion

Pol CONIN

Digital Manager

« Expert analysis: GT30-TH through-hull transducer for ClearVü/SideVü »

The Garmin GT30-TH transducer is a critical component for any navigation system requiring detailed underwater mapping via ClearVü and SideVü technologies. Its through-hull stainless steel design delivers superior robustness and operational reliability in demanding marine environments, outperforming transom-mount transducers in signal retention at high speeds and physical protection. With 500W power and 455/800 kHz frequencies, it produces remarkably clear images essential for identifying structures and fish schools.

Integration is straightforward thanks to its 12-pin compatibility with Garmin chartplotters. It is essential to update the host device’s software to ensure seamless interoperability and access to all features. Installation requires careful attention, including hull drilling and use of the included anti-rotation bolts, which are critical for device stability in motion. For hulls with a deadrise angle exceeding 5°, adding a fairing block is recommended to optimize beam angle and sonar return quality, though the GT30-TH is specifically designed for angles under 5° without one. Its integrated temperature sensor provides valuable data for analyzing fishing or navigation conditions. As an installer, I confirm the GT30-TH as a reliable and high-performance solution for enhanced and stable underwater vision.

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GT30-TH Transducer - In-Hull Stainless Steel ClearVü/SideVü

£438.70 GBP

£438.70 GBP ~~£544.38 GBP~~

Frequently Asked Questions

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Which Garmin devices is the GT30-TH transducer compatible with?

The GT30-TH transducer is compatible with Garmin chartplotters featuring a 12-pin connector. For seamless integration and operation, a software update of the chartplotter is required.

What are the main features of the Garmin GT30-TH transducer?

The Garmin GT30-TH transducer is a through-hull stainless steel transducer that integrates ClearVü™ and SideVü™ sonar imaging technologies. It operates at frequencies of 455/800 kHz with 500W power and includes a temperature sensor. It is designed for permanent installation through the hull of your boat.

For which hull angle is the GT30-TH transducer suitable?

The GT30-TH transducer is specifically suited for hulls with angles of drift (hull angle) under 5°, ensuring optimal performance without requiring a fairing block. For hulls with an angle exceeding 5°, using a fairing block is recommended. This maintains the sonar beam perpendicular to the waterline and ensures optimal signal quality.

Where is the best location to install the GT30-TH transducer on my boat?

For optimal performance, the GT30-TH transducer must be installed in an area of clean, non-turbulent water. Here are some general considerations:

On outboard and sterndrive boats: Install the transducer in front of and near the engine or engines.

On inboard boats: Install the transducer in front of and away from the propeller and propeller shaft.

On vee-hull boats: Install the transducer in front of the first chine.

On full-keel hulls: Install the transducer with a slight angle pointing forward, parallel to the centerline.

On fin-keel hulls: Install the transducer 25 to 75 cm (10 to 30 in) in front of the keel and no more than 10 cm (4 in) to the side of the centerline.

On displacement hulls: Install the transducer approximately one-third of the waterline length from the bow, and 150 to 300 mm (6 to 12 in) to the side of the centerline.

Avoid installing the transducer behind strakes, frames, fittings, through-hulls, or any other features that may create air bubbles or cause turbulent water.

How can I reduce interference with the sonar signal of my GT30-TH transducer?

To reduce interference with your GT30-TH sonar transducer signal, take the following steps:

Electromagnetic Interference (EMI): Ensure proper grounding of devices. If the transducer cable must cross a power cable, route the cables at 90 degrees to each other. You can also install a ferrite bead on the transducer cable and keep it away from other powered cables.

Interference from turbulence: Mount the transducer as far as possible from any hull equipment or features (planking, chines, propeller) that could agitate the water. Areas of eroded paint on the hull often indicate turbulent zones to avoid.

Acoustic interference: Mount the transducer away from propellers, shafts, cables, other machinery, and other transducers. If using multiple transducers, space them at least 60 cm (24 in) apart.

Does the Garmin GT30-TH transducer measure water temperature?

Yes, the Garmin GT30-TH transducer is equipped with an integrated sensor that measures and displays water temperature on compatible chartplotters.

Can the GT30-TH transducer be installed on a metal hull?

Yes, the GT30-TH transducer can be installed on a metal hull. Specific instructions are provided for preparing a metal hull, requiring the use of a file, a 13 mm (1/2 in) drill bit, and a 32 mm (1 1/4 in) hole saw for the shaft hole to ensure proper and secure installation.