| 1918 |
H 33
|
Launched |
|
| 1921 |
P 553
|
Commissioned |
|
| 1923 |
P 555
|
Commissioned |
|
| 1925 |
Otway (N 51)
|
Laid Down |
|
| 1925 |
Oxley (N 55)
|
Laid Down |
|
| 1927 |
Oberon (N 21)
|
Completed |
|
| 1938 |
Tetrarch (N 77)
|
Laid Down |
|
| 1938 |
Tetrarch (N 77)
|
Launched |
|
| 1939 |
Seahorse (S 98)
|
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 (N 99)
|
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 (P 51)
|
An attack by HMS Unseen on the Italian merchantman Hermada, was unsuccessful. |
|
| 1944 |
Tally-Ho (P 317)
|
HMS Tally-Ho sinks three small Japanese sailing vessels with gunfire in the Strait of Malacca. |
|
| 1944 |
Variance (P 85)
|
Completed |
|
| 1945 |
Otway (N 51)
|
Scrapped at Inverkeithing by Thos W Ward Ltd. |
|
| 1945 |
Oberon (N 21)
|
Sold for scrap |
|
| 2003 |
Unseen (S 41)
|
HMCS Victoria arrives Esquimalt. First Canadian submarine on West Coast since 1974 |
|
