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HOV Alvin
The U.S. Navy’s human occupied vehicle (HOV) Alvin being launched from the Office of Naval Research’s Research Vessel Atlantis. Alvin can reach depths of 6,500 meters (approximately 4 miles), carrying two scientists and one pilot for about eight hours per dive. Owned by the U.S. Navy, Alvin has been in operation since 1964 through Woods Hole Oceanographic Institution.