| 1912 | Pactolus 1886 - 1912 | Commissioned at Chatham |
| 1926 | Oberon (N 21) | Launched |
| 1939 | Spearfish (N 69) | HMS Spearfish was heavily damaged by German warships off Horns Reef. She was unable to submerge but nevertheless managed to escape. A rescue mission was undertaken by the British Humber force and Home fleet. Spearfish safely put in Rosyth on the 26th. Repairs to Spearfish were completed in early March 1940. |
| 1940 | Tuna (N 94) | HMS Tuna torpedoes and sinks the German catapult ship Ostmark in the Bay of Biscay about 35 nautical miles south-west of St. Nazaire, France. |
| 1940 | Cachalot (N 84) | HMS Cachalot attacks a submarine with torpedoes in the Bay of Biscay. The target is not hit. |
| 1941 | Triumph (N 18) | HMS Triumph damages the Italian tanker Poseidone and the Italian merchant Sidamo off Ortona, Abruzzi, Italy. |
| 1941 | Urge (N 17) | An attack was made a 2,500 ton Merchant Vessel. All torpedoes missed. |
| 1941 | P 36 | Completed |
| 1942 | Sea Dog (P 216) | Completed |
| 1942 | Usurper (P 56) | Launched |
| 1943 | Ultor (P 53) | HMS Ultor torpedoes and damages the German tanker Champagne 11 nautical miles east of Bastia, Corsica, France. |
| 1944 | Tudor (P 326) | HMS Tudor lays mines off the west coast of Siam. |
| 1944 | Vigorous (P 74) | HMS Vigorous claims the sinking of a sailing vessel south-east of Cape Drepano, Sithonia Peninsula, Greece. |
| 1944 | Visigoth (P 76) | HMS Visigoth damages two sailing vessels with gunfire in Strati harbour, Crete, Greece. |
| 1944 | Vox (P 73) | HMS Vox sinks a sailing vessel with gunfire about 15 nautical miles south of the Kassandra Peninsula, Greece. |
| 1945 | Ambush (P 418) | Launched |
| 1952 | Sportsman (P 229) | She was lost off Toulon on 24 September 1952. The entire crew of 47 officers and men went down with the ship. |
| 1960 | Onslaught (S 14) | Launched |