Sonde GT17M-THF 12° - traversante CHIRP moyenne fréquence - visuel officiel Garmin 2

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Garmin

010-02930-01

GT17M-THF 12° through-hull CHIRP mid-frequency fishfinder

The Garmin GT17M-THF through-hull transducer, 12 degrees, is a robust stainless-steel solution designed for broad compatibility with fiberglass, wood, composite, aluminum, or steel hulls. Its integrated 12-degree angle optimizes sonar performance by compensating for hull drift. The product includes essential galvanic isolation components for installations on metal hulls and requires a software update on the Garmin chartplotter.

Retail priceBenefit from the professional rate

1.014,42€

1.014,42€ ~~1.166,66€~~

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Prices shown excluding VAT for Türkiye. If your delivery address is in the European Union, the VAT of the destination country will be added at checkout.

Available 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	CHIRP mid-band
Fishfinder frequencies	CHIRP 150-240 kHz, CHIRP 40-75 kHz
Transducer material	Stainless steel
Integrated temperature sensor	Yes
Compatible displays	Garmin chartplotters and fishfinders compatible
Wireless connectivity	No
Mounting type	Through-hull
Certifications	CE
CHIRP high frequency	150-240
CHIRP low frequency	40-75
Integrated speed sensor	No
Release year	2024.0

Detailed description

The Garmin GT17M-THF 12° through-hull fishfinder is a robust and versatile detection solution designed for reliable integration across a wide range of vessels. Its stainless steel housing ensures increased durability in marine environments, allowing installation on fiberglass, wood, composite, aluminum, or steel hulls.

Installation and versatility of the GT17M-THF fishfinder

This model features a 12° internal angle, specifically designed to compensate for hull drift angles ranging from 6° to 16°, ensuring optimal transducer orientation for precise sonar performance. When installing on aluminum or steel hulls, the use of the included galvanic isolation components is mandatory to prevent corrosion and maintain hull watertight integrity. Installation requires specific tools, such as 98 mm (3 7/8 in) hole saws for fiberglass and 101 mm (4 in) for metal, as well as a flexible, fast-curing marine sealant for underwater sealing.

Recommendations and maintenance for the Garmin GT17M-THF fishfinder

Garmin recommends installation by a qualified professional to ensure optimal performance and avoid damage to the device or vessel. A software update of the Garmin chartplotter is required after installing this device. Cable routing must be carefully planned, away from potential interference sources such as engines and other wiring, using cable glands to protect the cable when passing through bulkheads. For maintenance, applying a water-based antifouling paint is an option to prevent fouling, and it is critical to check for leaks before leaving the boat in the water for an extended period. The Garmin GT17M-THF 12° fishfinder stands as a reliable technical choice for demanding navigators, requiring careful installation but offering robustness and extended compatibility compared to transom-mounted or internal transducers, which are less suited to all hull configurations and marine conditions.

Documentation

Type	Nom
	Notice d'installation - Instructions d'installation de la sonde GT17M-THF (12 degrés)

Expert opinion

Pol CONIN

Digital Manager

« Robustness and integration of the Garmin GT17M-THF transducer »

The Garmin GT17M-THF through-hull transducer, with a 12-degree angle, stands out for its stainless steel design, ensuring robustness and longevity in the most demanding marine environments. Its extensive compatibility with fiberglass, wood, composite, aluminum, and steel hulls makes it a versatile solution for many types of vessels. The internal 12-degree angle is a major technical advantage, enabling effective correction of hull drift angle for optimized sonar performance, particularly between 6 and 16 degrees. For metal hulls, the inclusion of galvanic isolation components is essential, preventing electrolytic corrosion and preserving the structural integrity of the mounting point. While installation requires technical expertise, including precise hull drilling and application of appropriate marine sealant, the provided documentation is comprehensive. The need for a software update to the Garmin chartplotter after installation highlights the system integration of the device, ensuring compatibility and optimal performance with existing equipment. This transducer is a reliable investment for stable and accurate sonar data acquisition.

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GT17M-THF 12° through-hull CHIRP mid-frequency fishfinder

1.014,42€

1.014,42€ ~~1.166,66€~~

Frequently Asked Questions

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With which hull materials is the Garmin GT17M-THF transducer compatible?

The Garmin GT17M-THF transducer is designed to be installed on a wide range of hull materials. Its stainless steel housing makes it compatible with fiberglass, wood, composite, aluminum, or steel hulls.

It is important to note that when installing on aluminum or steel hulls, the included galvanic isolation components must be installed to prevent corrosion.

For which hull leeway angle is the GT17M-THF 12-degree depth sounder designed?

The Garmin GT17M-THF transducer with a 12-degree internal angle is specifically designed to compensate for hull drift angles ranging from 6 to 16 degrees. For optimal performance, the angle of the purchased transducer should be as close as possible to the measured drift angle at the installation location.

Is it recommended to have the GT17M-THF transducer installed by a professional?

Yes, Garmin strongly recommends that installation of the GT17M-THF transducer be performed by a qualified marine installer. This ensures not only the best possible performance of the device but also helps prevent potential damage to the transducer or the vessel.

What tools are required to install the Garmin GT17M-THF transducer?

For installing the Garmin GT17M-THF transducer, you will need the following tools:

A drill with a 3 mm (1/8 in) bitA wrench suitable for nuts up to 108 mm (4 1/4 in)A 4.5 mm (3/16 in) Allen keyMarine sealant (flexible, fast-curing, for below the waterline)Sandpaper and masking tapeFor fiberglass hulls: a 98 mm (3 7/8 in) hole sawFor metal hulls: a 101 mm (4 in) hole saw and a file

What is the diameter of the hole to drill in the hull to install the GT17M-THF transducer?

The size of the hole to drill in the hull depends on the hull material:

For a solid or laminated fiberglass hull: a 98 mm (3 7/8 in) hole saw is required. For a metal hull (aluminum or steel): a 101 mm (4 in) hole saw is required. It is critical to verify your hull material before drilling.

Are galvanic isolation components required when installing on a metal hull?

Yes, installing the GT17M-THF transducer in an aluminum or steel hull absolutely requires the use of the included galvanic isolation components. Failure to install these components will result in galvanic corrosion, which could cause water infiltration around the transducer and damage the hull.

How should I maintain and clean my Garmin GT17M-THF transducer?

For maintenance and cleaning of your Garmin GT17M-THF transducer, follow these recommendations:

Never use solvents such as mineral spirits, acetone, methyl ethyl ketone (MEK), or similar products, as they can permanently damage the transducer surface. Do not use an electric sander or pressure washer to clean the transducer. Always ensure the transducer is submerged when operating, as operation in air can cause heat damage.