Garmin Shadow Drive f/GHP GHP 12 & GHP 20 Communication | VHF - Handheld or when sudden fog and

or when sudden fog and storms make the visibility poor

An excellent choice for fiberglass and wood hulls

Box Dimensions: 6"H x 14"W x 17"L WT: 8

Bronze Thru-hull Wide Beam Transducer w/Depth & Temp - 20° Tilt

Garmin Shadow Drive f/GHP GHP 12 & GHP 20 Communication | VHF - Handheld or when sudden fog andShadow Drive The GHP 10's patented Shadow Drive technology gives boaters the security of knowing they maintain control even when relying upon the autopilot. Use this Shadow Drive attachment to automatically disengage the autopilot if the helm is turned, allowing the helmsman to maneuver the boat. 1 4" Female NPT Fittings Compatible Devices: GHP 10 Marine Autopilot System GHP 12 Autopilot System GHP 20 for Hydraulic Steering Corepack GHP 20 Marine