USS O-10 (SS-71)

USS "O-10" (SS-71) was an "O"-class submarine of the United States Navy. Her keel was laid down on 27 February 1917 by the Fore River Shipbuilding Company in Quincy, Massachusetts. She was launched on 21 February 1918 sponsored by Mrs. John E. Bailey, and commissioned on 17 August 1918 with Lieutenant Sherwood Picking in command.

"O-10" served during World War I operating out of Philadelphia, Pennsylvania, on coastal patrol against U-boat until 2 November, when she departed Newport, Rhode Island, with other submarines for service in European waters. The Armistice with Germany was signed before the ships reached the Azores, however, and the ships returned to the United States.

In 1919, "O-10" joined others of her class at New London, Connecticut, to train sub crews at the submarine school there. In 1924, "O-10" steamed to Coco Solo, where she was reclassified as a second line submarine 25 July 1924. Returning to operations at New London, she reverted to first line 6 June 1928. She continued at New London until January 1930, when she sailed north to Portsmouth, New Hampshire, returning to New London in February. She continued training duties until February 1931, when she sailed to Philadelphia, decommissioning there 25 June.

With the approach World War II, there was a recognized need for numerous training subs. "O-10" recommissioned at Philadelphia on 10 March 1941 and went to New London in May. She departed on a trial run to Portsmouth, New Hampshire, on 19 June 1941, the day before
"O-9" (SS-70)failed to return. "O-10" joined in the search for her sister ship but found no trace of her. At 1655 on 22 June,
"Triton" (SS-201),with Secretary of the Navy Frank Knox on board, fired a 21-gun salute for the crew lost on the ill-fated vessel.

Returning to New London, "O-10" trained crews there until war's end. She then sailed to Portsmouth, New Hampshire and decommissioned there 10 September 1945. Struck from the Naval Vessel Register on 11 October 1945, she was sold to John J. Duane Company of Quincy on 21 August 1946.

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