Allied Warships

HMS Olympus (N 35)

Submarine of the O class

NavyThe Royal Navy
TypeSubmarine
ClassO 
PennantN 35 
Built byWilliam Beardmore & Co. (Dalmuir, Scotland) 
Ordered21 Dec 1926 
Laid down14 Apr 1927 
Launched11 Dec 1928 
Commissioned14 Jun 1930 
Lost8 May 1942 
Loss position35° 55'N, 14° 35'E
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)

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CommanderFromTo
1Cdr. Hugh Valentine King, RN15 Sep 193725 Jan 1940
2Lt.Cdr. Herbert George Dymott, RN25 Jan 19408 May 1942 (+)

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Notable events involving Olympus include:


The page for this submarine is currently (July 2015 and onwards) being updated.

31 Aug 1939
HMS Olympus (Cdr. H.V. King, RN) departed Singapore for her 1st war patrol. She was ordered to patrol in the Malacca Strait. (1)

6 Sep 1939
HMS Olympus (Cdr. H.V. King, RN) ended her 1st war patrol at Singapore. (2)

19 Sep 1939
HMS Olympus (Cdr. H.V. King, RN) departed Singapore for her 2nd war patrol. She was ordered to patrol in the Sunda Strait. (2)

10 Oct 1939
HMS Olympus (Cdr. H.V. King, RN) ended her 2nd war patrol at Singapore. (3)

24 Oct 1939
HMS Olympus (Cdr. H.V. King, RN) departed Singapore for Colombo. (3)

30 Oct 1939
HMS Olympus (Cdr. H.V. King, RN) arrived at Colombo. (3)

3 Nov 1939
HMS Olympus (Cdr. H.V. King, RN) is docked at Colombo. (4)

12 Nov 1939
HMS Olympus (Cdr. H.V. King, RN) is undocked. (4)

17 Nov 1939
HMS Olympus (Cdr. H.V. King, RN) departed Colombo for her 3rd war patrol. She was ordered to patrol in the Indian Ocean. (4)

28 Nov 1939
HMS Olympus (Cdr. H.V. King, RN) arrived at Diego Saurez. She departed to continue her patrol later the same day. (4)

6 Dec 1939
HMS Olympus (Cdr. H.V. King, RN) arrived at Diego Saurez. (5)

10 Dec 1939
HMS Olympus (Cdr. H.V. King, RN) departed Diego Saurez to continue her patrol. (5)

29 Dec 1939
HMS Olympus (Cdr. H.V. King, RN) arrived at Durban, South Africa. (5)

8 Jan 1940
HMS Olympus (Cdr. H.V. King, RN) departed Durban, South Africa for her 4th war patrol. She was ordered to patrol in the Indian Ocean. (6)

14 Jan 1940
HMS Olympus (Cdr. H.V. King, RN) made a short call at Mauritius. (6)

22 Jan 1940
HMS Olympus (Cdr. H.V. King, RN) ended her 4th war patrol at Colombo. (6)

29 Jan 1940
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) departed Colombo for her 5th war patrol. She was ordered to patrol off the Maldives. (6)

4 Feb 1940
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) ended her 5th war patrol at Colombo. (7)

8 Feb 1940
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) is docked at Colombo. (7)

10 Feb 1940
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) is undocked. (7)

22 Feb 1940
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) conducted exercises off Colombo. These included a practice attack on the Australian light cruiser HMAS Hobart (Capt. H.L. Howden, RAN). (7)

23 Feb 1940
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) conducted exercises off Colombo together with HMS Widnes (Lt.Cdr. R.B. Chandler, RN). (7)

28 Feb 1940
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) departed Colombo for her 6th war patrol. She was ordered to patrol off the Chagos Archipaligo and the Maldives. (7)

27 Mar 1940
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) ended her 6th war patrol at Colombo. (8)

4 Apr 1940
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) conducted exercises off Colombo together with HMIS Ramdas (Lt.Cdr. M.H.St.L. Nott, RIN). (9)

16 Apr 1940
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) departed Colombo for Aden. (9)

24 Apr 1940
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) arrived at Aden. (9)

26 Apr 1940
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) departed Aden for Port Said. (9)

1 May 1940
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) arrived at Port Said. (10)

2 May 1940
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) departed Port Said for Malta. (10)

7 May 1940
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) arrived at Malta. (10)

9 May 1940
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) is taken in hand for refit at Malta. (10)

18 May 1940
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) is docked at Malta. (10)

29 May 1940
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) is undocked. (10)

5 Jun 1940
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) is docked at Malta. (11)

7 Jul 1940
At 0915 hours (zone -2), HMS Olympus (Lt.Cdr. H.G. Dymott, RN), was bombed and damaged by Italian aircraft while in dock in Malta. Repairs and refit were delayed and were only completed on 29 November 1940. (12)

9 Sep 1940
At 1225 hours (zone -2), HMS Olympus (Lt.Cdr. H.G. Dymott, RN), was bombed and damaged by Italian aircraft while in dock in Malta. She sustained some minor damage. (13)

18 Oct 1940
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) was undocked. (14)

11 Nov 1940
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) is docked at Malta. (15)

14 Nov 1940
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) is undocked. (15)

26 Nov 1940
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) conducted a basin dive at Malta. (15)

14 Dec 1940
During the night of 14/15 December 1940, HMS Olympus (Lt.Cdr. H.G. Dymott, RN), conducted trials and exercises off Malta. (16)

16 Dec 1940
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) departed Malta for a few days of exercises south of Malta.

19 Dec 1940
Having completed her exercise programme, HMS Olympus (Lt.Cdr. H.G. Dymott, RN), returned to Malta. (16)

22 Dec 1940
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) departed Malta for Gibraltar. (16)

29 Dec 1940
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) arrived at Gibraltar. (16)

2 Jan 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) departed Gibraltar for her 7th war patrol. She is ordered to patrol off the Azores. (17)

26 Jan 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) is ordered to patrol off Brest, France. (17)

29 Jan 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) ended her 7th war patrol at Portsmouth. At Portsmouth she was docked around mid-February for repairs. (17)

23 Feb 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) departed Portsmouth for Dartmouth.

24 Feb 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) arrived at Dartmouth for a short work-up period and A/S exercises.

28 Feb 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) departed Dartmouth for Gibraltar.

7 Mar 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) arrived at Gibraltar.

14 Mar 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) departed Gibraltar for her 8th war patrol. She was to provide escort for convoys HG 56 / OG 56.

2 Apr 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) ended her 8th war patrol at Gibraltar.

3 Apr 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) departed Gibraltar for her 9th war patrol. She was ordered to patrol off Oran as it is thought that the Vichy-French battleship Dunkerque might be leaving that port.

5 Apr 1941
Her patrol off Oran is cancelled, HMS Olympus (Lt.Cdr. H.G. Dymott, RN) is ordered to proceed to Malta.

9 Apr 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) arrived at Malta. She arrived at Malta with many defects.

21 May 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) departed Malta for Gibraltar.

28 May 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) arrived at Gibraltar.

14 Jun 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) departed Gibraltar for her 10th war patrol. She was to provide escort for convoys HG 65 / OG 65.

28 Jun 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) ended her 10th war at Gibraltar.

4 Jul 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) is docked at Gibraltar. (18)

11 Jul 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) is undocked. (18)

15 Jul 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) conducted exercises off Gibraltar. (18)

16 Jul 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) departed Gibraltar for her 11th war patrol (2nd in the Mediterranean). She was ordered to patrol in the Tyrrhenian Sea. (17)

21 Jul 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) twice attacked an Italian convoy with a single torpedo in the central Tyrrhenian Sea. Both torpedoes missed.

(All times are zone -1)
1327 hours - In position 39°53'N, 11°49'E sighted the masts and upperworks of a ship. On closing sighted that this was an armed merchant cuisers with two 2000 - 3000 ton freighters in convoy. Started attack. The convoy was on a steady course from Naples to Cagliary.

1358 hours - Fired one torpedo from 6000 yards. It missed.

1423 hours - Fired another torpedo from 5500 yards. This torpedo also missed. (17)

23 Jul 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) attacked a large passenger ship south-east of Ischia Island. No hits were obtained.

(All times are zone -1)
1327 hours - Fired two torpedoes (four were intended but two torpedo tubes misfired but of the torpedoes fired only one was heard to run) at a large passenger vessel escorted by a small sloop. Range was 3000 yards. Attack position was to the south-east of Ischia Island. No hits were obtained.
(17)

28 Jul 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) torpedoed and sank the Italian merchant Monteponi (742 GRT, built 1917) about 10 nautical miles north of Cape Comino, Sardinia, Italy in position 40°40'N, 09°50'E.

(All times are zone -1)
1055 hours - Sighted a small merchant ship. Started attack.

1155 hours - Fired one torpedo from 900 yards. It hit. The ship was seen to sink in about 40 seconds. (17)

29 Jul 1941
At 1130 hours (zone -1), in position 39°04'N 09°38'E, HMS Olympus (Lt.Cdr. H.G. Dymott, RN) is damaged by a near miss from an Italian aircraft east of Cavoli Island (off the south-east corner of Sardinia) while trying to attack an enemy convoy. Lt.Cdr. Dymott is forced to abandon his patrol and return to Gibraltar where the submarine arrived on 2 August. (17)

2 Aug 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) ended her 11th war patrol (2nd in the Mediterranean) at Gibraltar. At Gibraltar repairs to the damage were undertaken including the removal of the battery for repairs to it. (17)

23 Oct 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) conducted trials and exercises off Gibraltar. (19)

24 Oct 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) conducted exercises off Gibraltar. (19)

27 Oct 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) conducted exercises off Gibraltar. (19)

28 Oct 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) conducted exercises off Gibraltar. (19)

30 Oct 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) departed Gibraltar for her 12th war patrol (3rd in the Mediterranean). She was ordered to patrol off southern France near the Spanish - French border. (17)

9 Nov 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) attacks the Italian merchant Mauro Croce (1049 GRT, built 1898) with gunfire and later with a torpedo near the border between Spain and France. The target escapes without damage.

(All times are zone -1)
0325 hours - Off Rosas Bay sighted a darkened ship buring dimmed navigation lights bearing 190°, range 5 nautical miles. Closed to investigate.

0415 hours - The ship was identified as being our target, the Mauro Croce. Started shadowing her.

0545 hours - Closed up the gun crews and made ready the torpedo tubes.

0600 hours - Called Mauro Croce and ordered her to stop.

0605 hours - Having received no reply fired a shot across her bows.

0610 hours - Opened fire from 2500 yards. Fired 12 rounds but obtained no hits.

0615 hours - By now Mauro Croce was possibly in Spanisch waters. Ceased fire.

0617 hours - In position 130°, Cape Bear, 5 nautical miles, fired one torpedo from 1600 yards. It missed.

0642 hours - Dived as it was getting light. (17)

12 Nov 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) ended her 12th war patrol (3rd in the Mediterranean) at Gibraltar.

The commanding officer of the 8th Submarine Flotilla (Capt. G.A.W. Voelcker, RN) was ' not impressed ' by the failed attack on Mauro Crose. (17)

23 Nov 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) conducted A/S exercises off Gibraltar together with 19th Destroyer Flotilla. (20)

24 Nov 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) departed Gibraltar for her 1st storage trip to Malta. (20)

30 Nov 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) arrived at Malta. (20)

3 Dec 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) departed Malta for the return trip to Gibraltar. (20)

10 Dec 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) arrived at Gibraltar. (21)

15 Dec 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) departed Gibraltar for her 2nd storage trip to Malta. (17)

21 Dec 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) arrived at Malta. (17)

26 Dec 1941
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) departed Malta for the return trip to Gibraltar. (17)

2 Jan 1942
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) arrived at Gibraltar. Olympus returned to Gibraltar with engine defects that required about three weeks to repair. (17)

6 Feb 1942
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) conducted A/S exercises off Gibraltar with HMS Boadicea (Cdr. H.P. Henderson, RN) and HMS Convolvulus (T/Lt. R.C. Connell, RNR) and later with HMS Wivern (Cdr. M.D.C. Meyrick, RN) and HMS Coltsfoot (T/Lt. the Hon. W.K. Rous, RNVR). (22)

7 Feb 1942
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) conducted exercises off Gibraltar. (22)

12 Feb 1942
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) departed Gibraltar for her 3rd storage trip to Malta. (22)

20 Feb 1942
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) arrived at Malta. (22)

22 Feb 1942
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) departed Malta for the return trip to Gibraltar. (22)

1 Mar 1942
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) arrived at Gibraltar. (23)

4 Mar 1942
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) is docked at Gibraltar. (23)

7 Mar 1942
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) is undocked. (23)

12 Mar 1942
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) departed Gibraltar for her 4th storage trip to Malta. (17)

20 Mar 1942
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) arrived at Malta. (17)

22 Mar 1942
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) departed Malta for the return trip to Gibraltar. (17)

29 Mar 1942
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) arrived at Gibraltar. (17)

25 Apr 1942
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) departed Gibraltar for her 5th storage trip to Malta. (24)

3 May 1942
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) arrived at Malta. (24)

8 May 1942
HMS Olympus (Lt.Cdr. H.G. Dymott, RN) departed Malta for the return trip to Gibraltar. She was mined and sunk shortly after her departure. (25)

Sources

  1. ADM 173/15825
  2. ADM 173/15826
  3. ADM 173/15827
  4. ADM 173/15828
  5. ADM 173/15829
  6. ADM 173/16355
  7. ADM 173/16356
  8. ADM 173/16357
  9. ADM 173/16358
  10. ADM 173/16359
  11. ADM 173/16360
  12. ADM 173/16361
  13. ADM 173/16363
  14. ADM 173/16364
  15. ADM 173/16365
  16. ADM 173/16366
  17. ADM 199/1831
  18. ADM 173/16827
  19. ADM 173/16830
  20. ADM 173/16831
  21. ADM 173/16832
  22. ADM 173/17319
  23. ADM 173/17320
  24. ADM 199/2564
  25. ADM 199/1217

ADM numbers indicate documents at the British National Archives at Kew, London.


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