Events
On This Day - December 4
| 1906 | C 14 (I 44) | Laid Down |
| 1913 | W 2 | Laid Down |
| 1915 | J 3 | Launched |
| 1916 | M 3 | Laid Down |
| 1918 | HMCS CC-1 | HMCS CC-1 paid off Halifax NS. |
| 1928 | Ambrose (F08) 1903 - 1946 | Paid off into the Maintenance Reserve at Rosyth on 4 December 1928. |
| 1939 | Salmon (N 65) | The German submarine U-36 was torpedoed and sunk in the North Sea south-west of Kristiansand, Norway, by a torpedo from the British submarine HMS Salmon. The first U-boat to be sunk by a British submarine. |
| 1941 | Trusty (N 45) | HMS Trusty makes a torpedo attack on Italian torpedo boat Orsa west of Zakynthos island, Greece. All torpedoes missed. |
| 1941 | Truculent (P 315) | Laid Down |
| 1942 | Traveller (N 48) | HMS Traveller sunk On 28th November HMS Traveller was carrying out a reconnaissance patrol of the coast of Taranto as part of operation Portcullis (an attack on Italian battleships in Taranto Harbour using chariots) The submarine did not return from the operation and was probably mined on or about 4th December. |
| 1942 | Seraph (P 219) | HMS Seraph fires 4 torpedoes against a convoy about 20 nautical miles west of Marettimo Island, Italy, missing the German transport ship Ankara. |
| 1944 | Shalimar (P 242) | HMS Shalimar sinks a Japanese sailing vessel with gunfire in the Strait of Malacca. |
| 1969 | Revenge (S 27) | Completed |
| 1987 | Victorious (S 29) | Laid Down |
| 2009 | Trafalgar (S 107) | Decommissioned. The first vessel of her class to be taken out of service. Trafalgar became the ninth decommissioned submarine to be stored in Plymouth while an ongoing MoD study decides how to dispose of them. |
| 2016 | Audacious (S 122) | Naming ceremony held in the Devonshire Dock Hall at Barrow where Audacious is officially named by her sponsor Lady Elizabeth Jones |
