Raymarine B765LM (A80015) is a compact, dual-channel CHIRP bronze thru-hull transducer designed for coastal and offshore vessels up to 9 m (30 ft) in length. Combining Low-frequency CHIRP (40 to 75 kHz at 300W) for deep-water tracking down to 1,200 ft with Medium-frequency CHIRP (80 to 130 kHz at 600W) for wider beam coverage and enhanced mid-water target identification, it delivers exceptional versatility for both inshore structure scanning and deep-water fishing. Supplied with a high-performance fairing block, its bronze stem cuts through turbulence for smooth, clear sonar performance at speeds over 30 knots.