Oberon Class Overseas Patrol Submarines
Class Details:
| Submarine | Pennant | Builder | Laid Down | Launched | Commissioned |
| Oberon | S09 | Chatham Dockyard | November 28th 1957 | July 18th 1959 | February 24th 1961 |
| Onslaught | S14 | Chatham Dockyard | April 8th 1959 | September 24th 1960 | August 14th 1962 |
| Orpheus | S11 | Vickers (Barrow) | April 16th 1959 | November 17th 1959 | November 25th 1960 |
| Odin | S10 | Cammell Laird (Birkenhead) | April 27th 1959 | November 4th 1960 | May 3rd 1962 |
| Otter | S15 | Scotts (Greenock) | January 14th 1960 | May 15th 1961 | August 20th 1962 |
| Olympus | S12 | Vickers (Barrow) | March 4th 1960 | June 14th 1961 | July 7th 1962 |
| Oracle | S16 | Cammell Laird (Birkenhead) | April 26th 1960 | September 26th 1961 | February 14th 1963 |
| Ocelot | S18 | Chatham Dockyard | November 17th 1960 | May 5th 1962 | January 31st 1964 |
| Otus | S18 | Scotts (Greenock) | May 31st 1961 | October 17th 1962 | October 5th 1963 |
| Opossum | S19 | Cammell Laird (Birkenhead) | December 21st 1961 | May 23rd 1963 | June 5th 1964 |
| Opportune | S20 | Scotts (Greenock) | October 26th 1962 | February 14th 1964 | December 29th 1964 |
| Osiris | S13 | Vickers (Barrow) | January 26th 1963 | November 29th 1962 | January 11th 1964 |
| Onyx | S21 | Cammell Laird (Birkenhead) | November 16th 1964 | august 18th 1966 | November 20th 1967 |
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© Written and researched by Jeremy Olver. First uploaded 21st October 2000. Updated 10th November 2000. Disclaimer.