{"product_id":"garmin-gt12m-thf-sonde-traversante-0-degre","title":"GT12M-THF 0° Through-Hull CHIRP Mid-Frequency Sonar","description":"\u003cp\u003e\n    The \u003cstrong\u003eGarmin GT12M-THF\u003c\/strong\u003e 0-degree through-hull transducer is designed for installation on fiberglass, wood, or composite hulls. Made of brass, this model is specifically suited for vessels where the hull deadrise angle at the installation point is between 0 and 5 degrees. It is critical not to install the GT12M-THF on aluminum or steel hulls to prevent galvanic corrosion, which could lead to water ingress and damage to the vessel.\n\u003c\/p\u003e\n\u003ch3\u003eDesign and Material Compatibility\u003c\/h3\u003e\n\u003cp\u003e\n    Unlike the GT15M-THF model, which is made of stainless steel and compatible with all hull types (including aluminum and steel with provided galvanic isolation components), the \u003cstrong\u003eGT12M-THF\u003c\/strong\u003e in brass offers a robust solution for specified hull materials. Installation requires standard tools such as a drill, a 73 mm (2 7\/8 in) hole saw for solid fiberglass hulls, marine sealant, and an adjustable wrench. A software update of the Garmin chartplotter is required after installation to ensure optimal performance.\n\u003c\/p\u003e\n\u003ch3\u003eInstallation Considerations and Angle Precision\u003c\/h3\u003e\n\u003cp\u003e\n    For optimal hydrodynamic and sonar performance, the \u003cstrong\u003eGT12M-THF\u003c\/strong\u003e must be mounted in a non-turbulent water zone, away from propellers, keels, water intakes, or any source of air bubbles. The hull deadrise angle must be measured accurately to select the 0-degree transducer. The arrow orientation on the transducer toward the boat's keel is critical to align the internal angle with the hull deadrise angle, ensuring precise and reliable sonar readings. Installation requires careful hull preparation, including core sealing for foam-core fiberglass hulls.\n\u003c\/p\u003e","brand":"Garmin","offers":[{"title":"0 degree","offer_id":55860427391316,"sku":"010-02867-00","price":279.43,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0988\/3274\/4788\/files\/main_5e834737-6922-4712-bfc1-2451cfb8e001.jpg?v=1779193255","url":"https:\/\/skysat.fr\/en-gb\/products\/garmin-gt12m-thf-through-hull-0-degree-sonar","provider":"Skysat","version":"1.0","type":"link"}