| 1911 | D3 | Completed |
| 1915 | E20 | Completed |
| 1940 | Unbending (P37) | Laid Down |
| 1941 | Talisman (N78) | HMS Talisman claims the sinking of two sailing vessels with gunfire north of Benghazi, Libya. |
| 1941 | Trident (N52) | HMS Trident torpedoes and sinks the German merchants Donau II and Bahia Laura in Lopphavet, Norway. |
| 1941 | Unbeaten (N93) | HMS Unbeaten torpedoes and sinks the Italian sailing vessel V51/Alfa about 25 nautical miles south of Capo dell'Armi, Italy. |
| 1942 | Rorqual (N74) | HMS Rorqual lays 50 mines south-east of Corfu. She also torpedoes and sinks the Italian merchant Monstella in the Ionian Sea off Corfu Island. |
| 1942 | Traveller (N48) | HMS Traveller departed Beirut for her 3rd war patrol. She was ordered to patrol off the North-African coast in the Tobruk area. Later she was ordered to patrol North of Crete. |
| 1943 | Viking (P69) | Completed |
