| 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 |
| Class: | 1942 - 1946: X Class |
| Built By: | Vickers (Barrow) |
| Build Group: | X |
| Fate: | |
| Scuttled in North Sea after failed attack on Scharnhorst on 3 Oct 1943 | |
11 pages added or updated in the last 1 month
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| Class: | 1942 - 1946: X Class |
| Built By: | Vickers (Barrow) |
| Build Group: | X |
| Fate: | |
| Scuttled in North Sea after failed attack on Scharnhorst on 3 Oct 1943 | |
11 pages added or updated in the last 1 month
Please help to maintain this site by reporting any Errors, Broken Links, Information or Site Issues on this page using this button
If you find this site useful, please consider supporting my work with a small Donation. Or you can make a big one if you like :)
Please Note: Donations made using this option go directly to the site owner and not to the Submariners Association.
Thankyou for your support.