Events
On This Day - April 3
| 1907 | C 9 (I 39) | Launched |
| 1918 | E 9 (I 89) | Deliberately scuttled in the Baltic off Helsingfors to prevent their capture by the German Army. The Care and Maintenance Party (under Lieutenant Downie) who carried out the scuttling also destroyed all of the stores and torpedoes of the Baltic Flotilla before returning home safely via Petrograd & Archangel. |
| 1918 | E 19 (I 99) | Deliberately scuttled in the Baltic off Helsingfors to prevent their capture by the German Army. The Care and Maintenance Party (under Lieutenant Downie) who carried out the scuttling also destroyed all of the stores and torpedoes of the Baltic Flotilla before returning home safely via Petrograd & Archangel. |
| 1918 | E 1 (I 81) | Deliberately scuttled in the Baltic off Helsingfors to prevent their capture by the German Army. The Care and Maintenance Party (under Lieutenant Downie) who carried out the scuttling also destroyed all of the stores and torpedoes of the Baltic Flotilla before returning home safely via Petrograd & Archangel. |
| 1943 | Safari (P 211) | HMS Safari sinks the Italian sailing vessel Nasello and the Italian fishing vessel S. Francisco di Paola A. with gunfire off the Gulf of Orosei, Sardinia, Italy. |
| 1943 | Trident (N 52) | HMS Trident fires 6 torpedoes against a submarine off La Spezia, Italy. All torpedoes missed their target. |
| 1943 | Upstart (P 65) | Completed |
| 1943 | Varne (P 66) / Ula (Norwegian) | Completed and commissioned into the Royal Norwegian Navy as Ula |
| 1944 | Ultor (P 53) | HMS Ultor sinks four sailing vessels off Kythira Island, Greece. |
| 1945 | Thule (P 325) | HMS Thule sinks two Japanese sailing vessels with gunfire of the west coast of Siam |
