Raymarine RVM1600 RealVision Black Box Sonar with 1kW Sonar, DownVision, SideVision and RealVision 3D SonarSee Clearer and Go Deeper Than Ever Success in fishing is never guaranteed. Enhance your chances by getting the full picture of what lies below and ensuring that they can run, but they cant hide. The RVM1600 for Axiom chartplotters takes multi channel fishfinder performance to new depths. The next generation of CHIRP DownVision, SideVision, 3D, and traditional CHIRP sonar, RealVision MAX fishfinder technology delivers more power so you can fish at the