The SonTek/YSI product line includes acoustic Doppler current profilers (ADP, ADCP, PCADP), velocimeters (ADV, MicroADV, ADVOcean), 3D current meters (Argonaut, FlowTracker, Triton), and Doppler velocity logs (DVL). These sensors and integrated systems are made for measuring water velocity and flow in oceans, rivers, lakes, streams, canals, harbors, estuaries, and laboratories.