| 1913 | E4 | Completed |
| 1915 | C31 | C31 sailed from Dover to patrol off Zeebrugge. The submarine was due to arrive at Harwich on 7th January, which she failed to do. No further contact was made and a search conducted by the Destroyers Lercher and Firedrake and the Royal Navy Air Service failed to locate the submarine or any survivors. |
| 1942 | Thunderbolt (N25) | HMS Thunderbolt sinks the Italian auxiliary minesweeper R 195/Nuovo San Pietro with gunfire west off Keffalonia Island, Greece. |
| 1942 | Upholder (N99) | HMS Upholder torpedoed and damaged the Italian steamer Sirio 4 nautical miles north-west of Cefal, Sicily. |
| 1945 | Rorqual (N74) | HMS Rorqual lays 10 mines (minefield ML 023) off Phuket, Siam. These mines were laid from the torpedo tubes. |
