| Navy | The Royal Navy |
| Type | Submarine |
| Class | O |
| Pennant | N 35 |
| Built by | William Beardmore & Co. (Dalmuir, Scotland) |
| Ordered | 21 Dec 1926 |
| Laid down | 14 Apr 1927 |
| Launched | 11 Dec 1928 |
| Commissioned | 14 Jun 1930 |
| Lost | 8 May 1942 |
| Loss position | 35.55N, 14.35E |
| History | HMS Olympus (Lt.Cdr. Herbert George Dymott, RN) was mined and sunk off Malta in approximate position 35º55'N, 14º35'E. She had just left Malta on passage to Gibraltar with personnel including many of the crews of the sunken submarines HMS Pandora, HMS P 36 and HMS P 39. There were only 9 survivors out of 98 aboard. They had to swim 7 miles back to Malta. 89 crew and passengers were lost with the ship. The wreck of HMS Olympus was discovered in late 2011. |
Commands listed for HMS Olympus (N 35)
Please note that we're still working on this section.
| Commander | From | To | |
| 1 | Cdr. Hugh Valentine King, RN | 15 Sep 1937 | Oct 1939 |
| 2 | Lt.Cdr. Herbert George Dymott, RN | Oct 1939 | 8 May 1942 (+) |
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Noteable events involving Olympus include:
7 Jul 1940
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) was bombed and damaged by Italian aircraft while in dock in Malta. Repairs and refit were completed on 29 November 1940.
28 Jul 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) torpedoed and sank the Italian merchant Monteponi (742 GRT) about 10 nautical miles north of Cape Comino, Sardinia, Italy in position 40°40'N, 09°50'E. (see map)
29 Jul 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) is damaged by a near miss from an Italian aircraft east of Isola dei Cavoli, Italy (off the south-east corner of Sardinia). Lt.Cdr. Dymott is forced to abandon his patrol and return to Gibraltar where the submarine arrived on 2 August.
9 Nov 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) attacks the Italian merchant Mauro Croce (1049 GRT) with torpedoed and gunfire in the Gulf of Genoa. The target escapes without damage.