171215-N-AX559-061 ATLANTIC OCEAN (Dec. 15, 2017). The R/V Atlantis, a U.S. Navy owned research vessel, deploys the cable-controlled Undersea Recovery Vehicle (CURV-21) during night operations. The CURV is designed to meet the U.S. Navy’s deep ocean recovery requirements down to a maximum depth of 20,000 feet, and is being used to support the Argentine Navy’s search for the ARA San Juan (S-42). (U.S. Navy photo by Lt. Alex Cornell du Houx/Released)