1918 | H33 | Launched |
1921 | P553 | Commissioned |
1923 | P555 | Commissioned |
1925 | Otway (N51) | Laid Down |
1925 | Oxley (P55) | Laid Down |
1927 | Oberon (S09) | Completed |
1938 | Tetrarch (N77) | Laid Down |
1938 | Tetrarch (N77) | Launched |
1939 | Seahorse (S98) | HMS Seahorse departed Dundee to take up a patrol position to the south-west of Stavanger, Norway. When the war with Germany commenced this became her 1st war patrol. |
1941 | Upholder (N99) | HMS Upholder fires two torpedoes at the Italian light cruiser Luigi di Savoia Duca Delgi Abruzzi off the north-west tip of Sicily but miss the target. |
1943 | Unseen (P51) | An attack by HMS Unseen on the Italian merchantman Hermada, was unsuccessful. |
1944 | Tally-Ho (P317) | HMS Tally-Ho sinks three small Japanese sailing vessels with gunfire in the Strait of Malacca. |
1944 | Variance (P85) | Completed |
1945 | Otway (N51) | Scrapped at Inverkeithing by Thos W Ward Ltd. |
2003 | Unseen (S41) | HMCS Victoria arrives Esquimalt. First Canadian submarine on West Coast since 1974 |