The RD Instruments Acoustic Doppler Log is the choice of the majority of ROV and AUV’s where a DVL is specified, often integrated with other navigation systems. Small, lightweight and highly accurate, the DVL is the underwater contractor’s first choice for fast and precise velocity and altitude updates for every type of underwater task. If you need your vehicle to hover with no deviation or to maintain high-accuracy station on a survey line, the Workhorse Navigator Doppler Velocity Log is an essential element of your precise positioning system.