The DST-800MSF offers depth, speed and temperature in a single, 51 mm (2 in) fitting. Only one hole through the hull simplifies the installation – an attractive feature for boat builders and boat owners alike. Patented, speed signal processing enhancements provide excellent paddlewheel accuracy below 5 knots (6 mph) and smooth linear output at all vessel speeds. The transducer’s wide, fan-shaped, fore-aft beam is able to find bottom even when installed on steep deadrise hulls or heeling sailboats. You also get true water temperature readings with the DST-800MSF’s reliable temperature sensor.