Garmin GCV 20 Ultra HD Scanning Sonar Black Box w/GT34UHD-TM Ultra HD Transom Mount Transducer [010-02055-00] Sailing | Shackles/Rings/Pins The arm of the GRF

The arm of the GRF 10 is connected to the rudder of the boat and relays position information through the sensor to the mariner so they know where the rudder is - giving them an added peace of mind when starting from a stopped position

Accuracy down to 3

Digital Sonar Module

Steering Type: Hydraulic

Garmin GCV 20 Ultra HD Scanning Sonar Black Box w/GT34UHD-TM Ultra HD Transom Mount Transducer [010-02055-00] Sailing | Shackles/Rings/Pins The arm of the GRFGCV 20 Ultra HD Scanning Sonar Black Box with GT34UHD TM Ultra HD Transom Mount Transducer Add Ultra High Definition Scanning Sonar to Your Compatible Chartplotter The easy to install, networkable GCV 20 sonar black box allows you to redefine clarity and detail. Add any of the 3 GT34UHD transducer models to see stunningly clear Ultra High Definition ClearV and Ultra High Definition SideV scanning sonars with frequencies ranging from 0. 8 MHz (800 kHz)