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The GT17M-THF transducer is designed for reduced drag and optimum sonar performance on near-coastal and offshore fishing and cruising boats. It features high-definition 1 kW medium band CHIRP (80-165 kHz) sonar that clearly defines fish targets down to depths of 1,800' in saltwater and 2,400' in freshwater. Ideal for installation on all hull materials, the transducer is available in 0-, 12- and 20-degree tilt versions to accommodate a wide range of deadrise angles without a fairing block. The thru-hull transducer offers a beamwidth of 9-18 degrees and comes in a durable flush-mount stainless steel housing. 1 kW medium-band CHIRP (80-165 kHz) transducer with beamwidths of 9-18 degreesThru-hull flush mounting with durable stainless steel housing and stemAvailable in 0-, 12- and 20-degree tilt versions for a range of deadrise angles - without a fairing blockAn excellent choice for near/offshore fishing and cruisingDistinguish between large fish around schools of baitfish, or notice the large fish sitting on the bottom with excellent target separationOffers excellent sensitivity for clear structure definition and fish identificationSimple plug-and-play operation with Garmin transducer ID auto-identification technologyCompatible with a wide range of hull materials, including fiberglass, composite, steel, aluminum and wood