Raymarine RV-212P RealVision 3D Bronze Thru-Hull Transducer Port 12 Degree (2M Cable)Raymarines RV 200 Bronze All In One Through Hull Transducer is designed for inboard and outboard powerboats. The RV 200 lets you easily identify structures and locate fish with the life like clarity of RealVision 3D sonar. The RV 200 is a 4 channel, wide spectrum CHIRP transducer with DownVision, SideVision, high frequency CHIRP fish targeting, and RealVision 3D sonar inside. The transducer has a built in attitude and heading reference system (AHRS)