The Garmin GT15M-THF is a stainless steel thru-hull medium CHIRP transducer designed for near-offshore fishing and cruising, delivering crisp sonar with a 0° Tilted Element and a clean, drag-reducing installation.
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Transducer type: Stainless steel thru-hull medium CHIRP transducer with a 0° Tilted Element
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CHIRP power and frequency: 600-watt midband CHIRP (85–165 kHz)
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Beamwidth: 16–24 degrees for broad coverage and clear fish arches
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Durability and design: Thru-hull flush-mount with stainless steel housing and stem to withstand demanding marine conditions while maintaining clean hull lines and reducing drag
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Installation and compatibility: Plug-and-play operation with transducer ID auto-identification; configurable for fiberglass, composite, steel, aluminum, and wood hulls
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Depth range: Up to 1,200 feet in saltwater and 1,900 feet in freshwater
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In the box: GT15M-THF 0° Tilted Element transducer; jam nut; thread isolator; hull isolator; documentation
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0° Tilted Element performance: Crisp returns and sharp target separation to help distinguish small baitfish from larger targets
Designed for reliable depth and sonar performance across both saltwater and freshwater environments, the GT15M-THF delivers durable, high-definition readings while preserving hull efficiency. Its plug-and-play setup and broad compatibility simplify installation on a wide range of vessel hulls, making it a practical choice for serious anglers and coastal cruisers alike.
