| Navy | The Royal Navy |
| Type | Submarine |
| Class | A |
| Pennant | P 414 |
| Built by | Devonport Dockyard (Plymouth, U.K.) |
| Ordered | 4 May 1943 |
| Laid down | 3 Dec 1943 |
| Launched | 14 Mar 1945 |
| Commissioned | |
| End service | |
| History | Not completed. Hulk used for explosives tests. Scrapped at Port Glasgow in June 1950. |
We don't have any commands listed for HMS Ace (P 414)
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