Get superior sonar clarity with the Raymarine RV-312 RV 3D T/H Transducers. Ideal for inboard or outboard boats, this 4-channel system includes Wide Spectrum CHIRP, DownVision, SideVision, and RealVision 3D. Built-in AHRS stabilizes imagery in all sea conditions. Quick temperature readings. Fits 6°-18° hulls without fairing blocks. Low-drag, 33ft cable, suitable for various hull materials.