{"product_id":"garmin-gt12m-thf-12-degres-sonde-traversante-laiton","title":"GT12M-THF 12° Through-Hull CHIRP Mid-Frequency Sonar","description":"\u003cp\u003e\n    The Garmin GT12M-THF \u003cstrong\u003ethrough-hull sonar\u003c\/strong\u003e is specifically designed for vessels with a deadrise angle of 12 degrees. Made of brass, it is optimized for installation in fiberglass, wood, or composite hulls. This brass design distinguishes it from the GT15M-THF, which is made of stainless steel and includes galvanic isolation components for aluminum or steel hulls. Installation of the GT12M-THF is strictly not recommended on metal hulls (aluminum or steel) to avoid galvanic corrosion.\n\u003c\/p\u003e\n\n\u003ch3\u003eTechnical specifications and installation\u003c\/h3\u003e\n\u003cp\u003e\n    Installing the Garmin GT12M-THF requires a 73 mm (2 7\/8 in) hole saw for fiberglass, wood, or composite hulls. A fast-curing flexible marine sealant is essential to ensure watertight integrity below the waterline. It is critical to ensure the preconfigured 12-degree angle of the transducer matches the measured deadrise angle at the installation point to guarantee optimal sonar performance. Garmin recommends updating the chartplotter software after installing the transducer for full compatibility and enhanced performance.\n\u003c\/p\u003e\n\n\u003ch3\u003ePositioning and usage recommendations\u003c\/h3\u003e\n\u003cp\u003e\n    The GT12M-THF transducer must be mounted in an area of clean, non-turbulent water, away from propellers, keels, water intakes, or any element likely to create air bubbles. On outboard or inboard\/sterndrive motorboats, it should be installed forward of the engine. For full-keel sailboats, a slight forward-facing angle parallel to the longitudinal axis is recommended. The transducer must only operate when fully submerged to prevent overheating damage. The brass construction ensures durability suited to its target installation environment.\n\u003c\/p\u003e","brand":"Garmin","offers":[{"title":"12 degrees","offer_id":55860429750612,"sku":"010-02867-01","price":380.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0988\/3274\/4788\/files\/main_b89a93b2-85ea-464c-9d39-5cad984ae67b.jpg?v=1779193279","url":"https:\/\/skysat.fr\/en-us\/products\/garmin-gt12m-thf-12-degree-through-hull-brass-sonar","provider":"Skysat","version":"1.0","type":"link"}