| 1894 | 1882 - 1919: Hebe | Completed |
| 1940 | Regent (N41) | HMS Regent torpedoes and damages the Italian merchant Antonietta Costa about 20 nautical miles west of Durazzo, Albania. |
| 1940 | O23 (Dutch) | Grounded at 70 feet. She immediately surfaced and it was noticed that she was much nearer to the coast than thought due to the current. She dived again and remained close inshore during the day. No major damage was caused to the submarine. |
| 1941 | Untamed (P58) | Laid Down |
| 1942 | Unbending (P37) | HMS Unbending torpedoes and sinks the Italian merchant Alga near Djerba, Tunisia. |
| 1942 | Traveller (N48) | HMS Traveller attacks the Italian tanker Proserpina that is escorted by the Italian torpedo boats Castore and Ciclone, with four torpedoes west of Crete. None of the torpedoes fired hit the target. |
| 1943 | Stratagem (P234) | Completed |
| 1944 | Sturdy (P248) | HMS Sturdy sinks a small Japanese vessel with gunfire in the Gulf of Boni, Celebes, Netherlands East Indies. |
| 1944 | Virtue (P75) | HMS Virtue sinks the Greek sailing vessel Aghios Matthaios with gunfire west of Cape Stavros, Crete. |
| 2000 | Unseen (S41) | HMCS Victoria (ex-HMS Unseen) departed UK for Canada |
