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P553

Build Group: US S Class
Fate: Returned to USN 11 July 1944 and sunk as a target, 23 March 1945.

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USS S-21 was decommissioned from the USN in 1942 and simultaneously transferred to United Kingdom where she was renamed HMS P553. She remained in American waters, based at Halifax, Canada, as an anti-submarine warfare training boat.

Events

19-12-1918 : Laid down
18-08-1920 : Launched
24-08-1921 : Commissioned
14-09-1942 : Transferred to the Royal Navy as HMS P553
14-07-1944 : Returned to USN
23-03-1945 : Sunk as target
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