In areas where it is not practical to tow snorkelers and when there are large areas to be covered, the diver propulsion vehicle (DPV) is an extremely useful tool. Light, agile, and similar to a small motor scooter, it can be run at various speeds to accommodate changing conditions. Image courtesy of JF Chabot, The Search for Trouvadore 2008, NOAA-OER.
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The Search for Trouvadore 2008