Raymarine B75M (A80034) is a 600W 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. The low-profile housing sits virtually flush against the hull, reducing drag and water turbulence. Operating across Medium CHIRP frequencies (80 kHz to 130 kHz) with a 24° to 16° beam width, the B75M delivers an ideal balance of depth penetration down to 900 ft and wide coverage under the boat for target resolution in shallow to mid-water depths.