151001-N-ZZ999-301 PACIFIC OCEAN (March 7, 2016) An underwater photo taken by an unmanned underwater vehicle shows the boiler compartment at the shipwreck site of the U.S. Navy tugboat USS Conestoga (AT 54) in the Farallones National Marine Sanctuary. Conestoga left from Mare Island Naval Shipyard, Caif. on March 25, 1921 and was declared lost with all 56 crew members on June 30, 1921. (U.S. Navy photo courtesy of NOAA/Released)