| 1917 | K15 | Completed |
| 1934 | Salmon (N65) | Launched |
| 1940 | Seal (N37) | HMS Seal departed Immingham for her 11th war patrol. she was ordered to lay a minefield south of the Swedish island of Vinga in the Kattegat, across a German convoy route to Norway. |
| 1940 | Uproar (P31) | Laid Down |
| 1943 | Rorqual (N74) | HMS Rorqual lays 50 mines off Isola Marettimo, to the west of Sicily, Italy. |
| 1945 | Torbay (N79) | HMS Torbay sinks two Japanese sailing vessels with scuttling charges in the Strait of Malacca. |
| 1986 | Vanguard (S28) | Order announced by Norman Lamount, Secretary of State for Defence Procurement |