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Acoustic Doppler Current Profiler (ADCP)

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Two ADCPs are often lowered together, one facing the surface and the other facing the bottom, to double the length of the current profile. The metal cage around the ADCPs that Senior Engineering Assistant Scott Worrilow of the Woods Hole Oceanographic Institution is helping overboard holds the instruments in place and protects them from accidental bangs against the ship's hull. (Claudia Cenedese)