Garmin Sonar Transom Mount GT51M-TM - 010-01966-00Garmin Sonar Transom Mount GT51M TM 010 01966 00 Perfect for the coastal and offshore fisherman who want CHIRP traditional sonar, CHIRP ClearV and CHIRP SideV scanning sonar, this transom mounted transducer consistently displays clear and crisp fish arches with superior target separation as well as clear pictures of objects, structure and fish that pass below and to each side of your boat and is optimized for rough sea conditions. The CHIRP ClearV