This plastic Garmin P79 In-Hull transducer with an adjustable deadrise angle makes installation a snap.
The NMEA 2000 100 W transducer has a depth of 500 ft; an operating frequency of 235 kHz; a beamwidth of 6 degrees; and a 0 to 22 degree deadrise.
Transducer kit comes with installation instructions. Follow the instructions carefully to avoid damaging your boat.