| 1905 | A 11 (I 01) | Completed |
| 1906 | B 11 (I 00) | Completed |
| 1943 | Saracen (P 247) | HMS Saracen torpedoes and sinks the German merchant Tell about 25 nautical miles east of Corsica. |
| 1943 | Unshaken (P 54) | HMS Unshaken torpedoes and sinks the Italian troop transport Asmara 3 nautical miles east of Brindisi, Italy. |
| 1944 | Unruly (P 49) | HMS Unruly fires four torpedoes at the German merchant Pelikan south-west of Kos, Greece. The torpedoes miss. |
| 1944 | P 554 | Returned to the US Navy |
| Class: | 1935 - 1970: T Class |
| Built By: | Vickers (Barrow) |
| Build Group: | T 1 |
| Fate: | |
| The boat was mined on or around 21st January 1942. She had earlier struck a mine in December 1940 but miraculously survived. There were no miracles the second time. | |
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