{"product_id":"garmin-gt15m-thf-20-degres-sonde-traversante-inox","title":"GT15M-THF 20° Through-Hull CHIRP Mid-Frequency Sonar","description":"\u003cp\u003e\n    The \u003cstrong\u003eGarmin GT15M-THF 20° through-hull sonar\u003c\/strong\u003e is a robust and versatile sonar detection solution designed for compatibility with a wide range of hull materials. Made of stainless steel, it differs from the GT12M-THF, which is made of brass and limited to fiberglass, wood, or composite hulls. The GT15M-THF model, however, is fully compatible with fiberglass, wood, composite, aluminum, and steel hulls, provided the supplied galvanic isolation components are installed for metal hulls to prevent corrosion. This transducer is optimized for deadrise angles of 17 to 24 degrees, ensuring optimal sonar performance within this range.\n\u003c\/p\u003e\n\u003ch3\u003eAdvanced Installation and Compatibility\u003c\/h3\u003e\n\u003cp\u003e\n    Installing the \u003cstrong\u003eGarmin GT15M-THF 20°\u003c\/strong\u003e requires careful attention to the hull’s deadrise angle, which must be measured precisely to match the transducer’s preconfigured 20° angle. For optimal performance, the transducer must be mounted in an area of clean water, free of turbulence caused by propellers, keels, or other hull appendages. Specific tools are required for installation, including 73 mm (2 7\/8 in) hole saws for fiberglass and 75 mm (3 in) for metal, as well as marine sealant to ensure a watertight seal. Correct alignment of the transducer’s arrow toward the keel is critical for internal angle alignment. It is also necessary to update the Garmin display’s software after installation to ensure full integration and functionality.\n\u003c\/p\u003e\n\u003ch3\u003eDurable Design and Targeted Performance\u003c\/h3\u003e\n\u003cp\u003e\n    The stainless steel construction of the \u003cstrong\u003eGarmin GT15M-THF 20°\u003c\/strong\u003e transducer ensures enhanced durability in marine environments, resisting corrosion and mechanical stress. The need for galvanic isolation on aluminum and steel hulls highlights Garmin’s thoughtful engineering to protect the vessel’s integrity. Compared to transducers with fixed or less specific angles, the GT15M-THF 20° offers a targeted solution for boats where the deadrise angle at the chosen location matches this specification, maximizing the efficiency of seabed and underwater target detection. This transducer integrates seamlessly with compatible Garmin displays, providing clear and reliable sonar data for navigation and fishing.\n\u003c\/p\u003e","brand":"Garmin","offers":[{"title":"20 degrees","offer_id":55860435222868,"sku":"010-02868-02","price":720.7,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0988\/3274\/4788\/files\/main_4fad0544-db81-4388-a834-09aef22ce97f.jpg?v=1779193368","url":"https:\/\/skysat.fr\/en\/products\/garmin-gt15m-thf-20-degrees-through-hull-stainless-steel-sonar","provider":"Skysat","version":"1.0","type":"link"}