| 1908 | D1 | Launched |
| 1911 | E4 | Laid Down |
| 1917 | L52 | Laid Down |
| 1933 | Sealion (N72) | Laid Down |
| 1940 | Porpoise (N14) | HMS Porpoise lays minefield FD 11 (48 mines) off Kalvag, Norway. |
| 1940 | O9 (Dutch) | Arrived at Portsmouth along with HrMs O10, HrMs O23 and HrMs O24. |
| 1940 | O20 (Dutch) | Arrived at Portsmouth along with HrMs O9, HrMs O23 and HrMs O24. |
| 1940 | O23 (Dutch) | Arrived at Portsmouth along with HrMs O9, HrMs O10, HrMs O23 and HrMs O24. |
| 1940 | O24 (Dutch) | Arrived at Portsmouth along with HrMs O9, HrMs O10 and HrMs O23 |
| 1943 | Unruly (P49) | HMS Unruly torpedoed & damaged the Italian merchant Nicolo Tommaseo |
| 1945 | Statesman (P246) | HMS Statesman torpedoes and sinks the Japanese heavy cruiser Haguro. |
