Airmar SS175C-20-L 20d Tilt Low CHIRP with Raymarine 11-Pin

The Airmar SS175C-20-L 20d Tilt Low CHIRP with Raymarine 11-Pin is a professional-grade marine transducer engineered for tactical and law enforcement maritime operations, search and rescue missions, and high-precision hydrographic surveys. Built for operators who demand accurate subsurface imaging in demanding conditions, this transducer delivers the real-time sonar intelligence required for underwater threat assessment, evidence recovery, and environmental reconnaissance. Its compact, low-profile design makes it ideal for rigid-hull inflatable boats, patrol craft, and specialized marine platforms where weight and mounting flexibility are operational constraints.

This transducer features CHIRP (Compressed High Intensity Radar Pulse) sonar technology, which transmits a continuous sweep of frequencies for superior target definition, clutter rejection, and depth penetration—critical for identifying submerged objects, structural anomalies, and subsurface hazards that single-frequency units miss. The 20-degree beam angle provides focused imaging at moderate ranges, reducing interference from adjacent water columns and enabling precise bottom mapping. The low-profile, tilted mounting bracket allows flush installation on hull or transom surfaces while maintaining optimal transducer orientation, and the Raymarine 11-pin connector ensures seamless integration with compatible Raymarine multifunction displays and networked chartplotters without adapter complexity. Weighing 11 lbs, the unit balances durability with minimal added vessel weight.

Law enforcement maritime units, coast guard auxiliaries, and professional salvage operations benefit most from this transducer's reliability and imaging clarity. Installation requires a compatible Raymarine 11-pin-equipped chartplotter or multifunction display; verify your existing system's sonar module supports CHIRP operation before purchase. The tilted low-profile housing is engineered for high-speed craft where conventional through-hull designs introduce drag or cavitation; verify hull material and thickness to confirm proper bracket mounting before final installation. For tactical teams conducting harbor security, underwater search, or maritime surveillance, this transducer transforms standard nav systems into actionable intelligence platforms.