| 1917 | Panama Canal | Submarines HMCS CC 1 and CC 2 along with depot ship HMCS Shearwater become first ships flying the White Ensign to transit the Panama Canal |
| 1918 | R9 | Launched |
| 1919 | L53 | Launched |
| 1922 | C16 | The previously recovered and refitted submarine was sold for scrap to C A Beard of Upnor |
| 1941 | Torbay (N79) | HMS Torbay attacks an Italian convoy 4 nautical miles west of Benghazi, Libya. The four torpedoes fired against the Italian merchants Bosforo and Iseo all miss their targets and Torbay is heavily depth charged following this attack. |
| 1941 | O24 (Dutch) | Attacked the Italian auxiliary patrol vessel V 111 / Eraldo with gunfire about 20 nautical miles south-southwest of Cagliary Bay, Sardinia, Italy. The action had to be broken off when 24 ran out of ammunition for the deck gun. |
| 1942 | Unshaken (P54) | HMS Unshaken sinks the German merchant Georg L.M. Russ off Norway |
| 1942 | Porpoise (N14) | HMS Porpoise lays a minefield (46 mines) off Ras el Tin, Libya and torpedoes and sinks the Italian transport Ogaden 9 nautical miles from Ras el Tin, Libya. |
| 1945 | Thorough (P324) | HMS Thorough sinks the Malaysian sailing vessel Palange with gunfire off Bali. |
| 2000 | Kursk | The Russian nuclear submarine Kursk and its 118-man crew were lost during naval exercises in the Barents Sea |
