{"product_id":"garmin-gt17m-thf-sonde-traversante-20-degres","title":"GT17M-THF 20° Through-Hull CHIRP Mid-Frequency Sonde","description":"\u003cp\u003e\n    The \u003cstrong\u003eGarmin GT17M-THF 20° through-hull transducer\u003c\/strong\u003e is designed to provide reliable and stable CHIRP sonar performance, specifically suited for vessels with a deadrise angle between 17 and 24 degrees. Made of stainless steel, this transducer ensures enhanced durability and broad compatibility with various hull materials, including fiberglass, wood, composites, aluminum, and steel.\n\u003c\/p\u003e\n\u003ch3\u003eHull Material Installation and Compatibility\u003c\/h3\u003e\n\u003cp\u003e\n    Installing the GT17M-THF transducer requires careful attention to the hull material. For aluminum or steel hulls, the use of the included galvanic isolation components is mandatory to prevent galvanic corrosion and water intrusion around the transducer. This requirement highlights Garmin's thoughtful design for secure and durable integration, unlike simpler transducers that may lack this essential protection on metal hulls. Installation is recommended by a qualified marine professional to ensure optimal performance and avoid damage.\n\u003c\/p\u003e\n\u003ch3\u003ePerformance Optimization and Positioning\u003c\/h3\u003e\n\u003cp\u003e\n    The GT17M-THF 20° model distinguishes itself from the 0° or 12° versions by its ability to precisely compensate for the specific deadrise angle, ensuring the transducer element is correctly oriented toward the bottom for maximum detection. For fiberglass hulls, a 98 mm hole is required, while metal hulls require a 101 mm hole. The transducer must be installed in a clean water area, free from turbulence created by propellers, keels, water intakes, or other equipment. Optimal positioning is critical: ahead of the engine for outboards, away from the propeller for inboards, or between engines for twin-engine setups. A software update for the Garmin chartplotter is required after installation to ensure compatibility and maximum performance. Regular maintenance with water-based antifouling paint and cleaning with non-aggressive solvents will extend the transducer's lifespan.\n\u003c\/p\u003e","brand":"Garmin","offers":[{"title":"20 degrees","offer_id":55860453704020,"sku":"010-02930-02","price":1155.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0988\/3274\/4788\/files\/main_1169427e-a0d3-48be-b7fb-2e781a94aa98.jpg?v=1779193703","url":"https:\/\/skysat.fr\/en\/products\/garmin-gt17m-thf-through-hull-sonde-20-degrees","provider":"Skysat","version":"1.0","type":"link"}