Events
On This Day - June 12
| 1912 | Fearless 1912 - 1921 | Launched |
| 1915 | E 20 (I 69) | Launched |
| 1933 | Shark (N 54) | Laid Down |
| 1940 | Narwhal (N 45) | HMS Narwhal lays minefield FD 19 (50 mines) off Haugesund, Norway. |
| 1941 | Taku (N 38) | HMS Taku torpedoes and sinks the Italian merchant Silvio Scaroniin the Gulf of Syrte 70 nautical miles off Benghazi, Libya. |
| 1941 | Torbay (N 79) | HMS Torbay sinks the Italian sailing vessel Gesu E Maria with gunfire off Skyros, Greece. |
| 1941 | Unshaken (P 54) | Laid Down |
| 1941 | O 24 (Dutch) | Sank the Italian tanker Fianona off Vada, Toscana, Italy with torpedoes and gunfire. Also sank the Italian auxiliary patrol vessel V 121 / Carloforte with gunfire and ramming 36 nautical miles northwest of Gorgona. |
| 1943 | Tarn (P 336) / Tijjerhai (Dutch) | Laid Down |
| 1944 | Sickle (P 224) | Sickle signalled that she had spotted a convoy in the approach to Steno Pass. The convoy suspected the presence of a submarine and dropped two depth charges and, although it seems unlikely that this attack accounted for the loss of the submarine, no further contact was made with her. |
| 1944 | Stoic (P 231) | HMS Stoic torpedoes and sinks the Japanese transport ship Kainan Maru off Phuket, Siam. |
| 1944 | Tiptoe (P 332) | Completed |
| 1959 | Dreadnought (S 101) | Laid Down |
| 2006 | Onyx (S 21) | Onyx arrives at Barrow where she will eventually become the main attraction at a new Submarine Heritage Centre |
| 2013 | Onyx (S 21) | After the planned Submarine Heritage Center failed to materialise. Onyx was towed away from her berth at Barrow to begin her journey to the scrapyard |
| 2018 | Talent (S 92) | HMS Talent began intensive training to re-join the frontline operational fleet after a major refit. The Trafalgar Class submarine had completed an extensive multi-million pound maintenance period in HM Naval Base Devonport in Plymouth. |
