| 1913 | S2 | Laid Down |
| 1915 | 1903 - 1946: Ambrose (F08) | Sold to the Admiralty |
| 1917 | H21 | Launched |
| 1937 | P552 | Decommissioned |
| 1939 | Seal (N37) | HMS Seal arrived at Portsmouth |
| 1942 | Safari (P211) | The Titania (under tow following a previous attack by HMS Unbroken) is sunk early by HMS Safari east of Tunisia. |
| 1942 | Thrasher (N37) | HMS Thrasher torpedoes and sinks the Italian merchant Lero between Symi and Rhodos Islands, Greece. |
| 1944 | Sceptre (P215) | HMS Sceptre torpedoes and sinks the German auxilary submarine chaser UJ 1111 off Lister, Norway. |
