| Navy | The Royal Navy |
| Type | Submarine |
| Class | S-1 |
| Pennant | P 556 |
| Built by | Bethlehem Steel Corp. (Quincy, Massachusetts, U.S.A.) |
| Ordered | |
| Laid down | 17 Apr 1919 |
| Launched | 9 Nov 1922 |
| Commissioned | 5 Jun 1942 |
| End service | 6 Mar 1944 |
| History | USS S-29 was transferred to the Royal Navy at New London on 5 June 1942. She arrived at Gibraltar, via Bermuda, in August 1942 to refit, nominally as part of 8th Flotilla. She moved to Plymouth in February 1943, for anti-submarine training role. In November 1943 she moved to Portsmouth for service in the same role. She was damaged by a battery explosion on 27 January 1944, and was decommissioned into reserve on 6 March 1944. She was returned to the United states Navy on 26 January 1945. Sold for scrap to Messrs Pounds, Portsmouth on 24 January 1947. |
| Former name | S-29 |
Commands listed for HMS P 556 (P 556)
Please note that we're still working on this section
and that we only list Commanding Officers for the duration of the Second World War.
| Commander | From | To | |
| 1 | Lt. Stewart Armstrong Porter, RN | Apr 1942 | 6 Oct 1942 |
| 2 | Lt. Laurence Edward Herrick, RN | 6 Oct 1942 | 23 Nov 1942 |
| 3 | Lt. Frederick Melbourne Piggott, RNR | 23 Nov 1942 | 26 Feb 1943 |
| 4 | Lt. Arthur Connuch Halliday, RN | 26 Feb 1943 | 17 Mar 1943 |
| 5 | Lt.Cdr. Frederick Henry Sherwood, RCNVR | 17 Mar 1943 | 19 Jun 1943 |
| 6 | Lt. Rudland Dallas Cairns, RN | 19 Jun 1943 | 27 Aug 1943 |
| 7 | Lt. John Renwick Haig Haddow, DSC, RN | 27 Aug 1943 | Dec 1943 |
| 8 | Lt. John Leslie Watkinson, RN | 28 Dec 1943 |
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