Raymarine RV-300 RealVision 3D Plastic Through Hull Transducer 0°, Direct connect to AXIOM (8m cable)Raymarine RV 300 RealVision 3D Plastic Through Hull Transducer 0, Direct connect to AXIOM (8m cable) Raymarine's RV 300 Plastic All In One Through Hull Transducer is designed for inboard and outboard powerboats. The RV 300 lets you easily identify structures and locate fish with the life like clarity of RealVision 3D sonar. The RV 300 is a 4 channel, Wide Spectrum CHIRP transducer with DownVision, SideVision, high frequency CHIRP fish targeting and