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Getting Ready to Cut the Umbilical

WHOI researchers secure harness lines and observe a test of the new Sentry autonomous underwater survey vehicle in April 2008, a day before heading out into the North Atlantic for deep-sea trials. Sentry is in the final stages of testing and refinement, and it is expected to be added to the National Deep Submergence Facility later this year. From left to right stand engineering assistant Andy Billings, engineer Rod Catanach, chief scientist for deep submergence Chris German, and engineer Al Duester.
(Photo by Tom Kleindinst, Woods Hole Oceanographic Institution)