Events
On This Day - April 5
| 1917 | C 7 (I 37) | C7 torpedoed and sank UC-68 off Schowen, Holland. |
| 1917 | C 7 (I 37) | Attacked with torpedo and sank a U-boat near the Zeebrugge channel, At the time of the attack C7 was on the surface but trimmed right down with only the top of her conning tower visible. |
| 1942 | Una (N 87) | HMS Una torpedoes and sinks the Italian merchant Ninetto G. about 12 nautical miles south of Capo dell'Armi. |
| 1943 | Thor (P 349) | Laid Down |
| 1943 | Viking (P 69) | Launched |
| 1944 | Ultimatum (P 34) | HMS Ultimatum sinks a German sailing vessel with gunfire off Suda Bay, Crete, Greece. |
| 1944 | Saga (P 257) | Laid Down |
| 1945 | Statesman (P 246) | HMS Statesman sinks seven small Japanese landing craft with gunfire and demolition charges in the Strait of Malacca. |
| 1946 | Teredo (P 338) | Completed |
| 1982 | Falklands War | The first ships of the Royal Navy task force sailed for the South Atlantic, only three days after the Argentine invasion of the Falklands |
