| 1913 | E1 | Completed |
| 1940 | Snapper (N39) | HMS Snapper attackes the German armed merchant cruiser Schiff 21/Widder with 2 torpedoes east of Denmark. However the torpedoes miss their target. |
| 1940 | Sealion (N72) | HMS Sealion attacks the German merchant Moltkefels with 3 torpedoes about 19 nautical miles south-west of Vaderob. However the torpedoes miss their target. |
| 1940 | Seal (N37) | The German merchant Vogesen hits a mine and sinks. The mine was laid by the British submarine HMS Seal in the Kattegat on 4 May 1940. |
| 1941 | Taku (N38) | HMS Taku torpedoes and sinks the Italian merchant Cagliari in the Tyrrhenian Sea about 20 nautical miles north-north-west of Stromboli Island, Italy. |
| 1941 | Truant (N68) | HMS Truant torpedoes sinks the Italian passenger/cargo ship Bengasi about 3 nautical miles south-east off the Cavoli lighthouse, Sardinia, Italy. |
| 1941 | Ursula (N59) | HMS Ursula attacks the German transport ships Brook and Tilly L.M. Russoff Tripoli, Libya but the ships escape. |
| 1941 | Sea Nymph (P223) | Laid Down |
| 1943 | Safari (P211) | HMS Safari torpedoes and sinks the Italian auxiliary minesweeper R 106/Onda off Asinara Island, Italy. |
| 1943 | Unrivalled (P45) | HMS Unrivalled attacks the Italian sailing vessel Albina with a torpedo off Cape Vaticano, Calabria, Italy. The torpedo misses. |
