Raymarine B175M (A80046) is a 1kW single-channel Medium-band CHIRP bronze thru-hull transducer featuring a fixed internal 12° tilted ceramic element. Engineered specifically for moderate deadrise hulls (8° to 15°), the internal tilt compensates for hull deadrise to project the sonar beam vertically downward without requiring an external fairing block. Its low-profile housing sits virtually flush against the hull, eliminating drag and water turbulence for clean sonar performance at high speeds. Operating across Medium CHIRP frequencies (80 kHz to 130 kHz) with a 24° to 16° beam width, the B175M delivers an exceptional balance of depth penetration down to 1,500 ft and broad coverage under the vessel for detailed bottom tracking and fish targeting.