USS John Sealy (SP-568), and NavSource Online: Section Patrol Craft Photo Archive: John Sealy (SP 568) also spelled John Sealey,Per the Dictionary of American Naval Fighting Ships at http://www.history.navy.mil/danfs/j4/john_sealey.htm; the spelling John Sealy probably is an update and correction of the Dictionary of American Naval Fighting Ships spelling. was a United States Navy minesweeper in commission during 1917.
John Sealy was built as a commercial steam tug of the same name in 1910 at West Lake, Louisiana. On 25 April 1917, the U.S. Navy acquired her from her owner, D. M. Picton, for use as a minesweeper on the section patrol during World War I. She was commissioned as USS John Sealy (SP-568).
After brief service as a minesweeper, John Sealy was returned to her owner on 10 August 1917. and NavSource Online: Section Patrol Craft Photo Archive: John Sealy (SP 568); theDictionary of American Naval Fighting Ships at http://www.history.navy.mil/danfs/j4/john_sealey.htm states that John Sealy was returned to her owner in "early 1918," but the 10 August 1917 date appears to be an update and correction of that assertion.
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