| Navy | The Royal Navy |
| Type | Submarine |
| Class | U |
| Pennant | P 35 |
| Built by | Vickers Armstrong (Barrow-in-Furness, U.K.) |
| Ordered | 11 Mar 1940 |
| Laid down | 19 Jul 1940 |
| Launched | 15 Mar 1941 |
| Commissioned | 2 Sep 1941 |
| End service | |
| History | HMS Umbra is not listed as active unit in the July and October 1945 Navy Lists Sold to be broken up for scrap on 9 July 1946 and scrapped at Blyth. |
Commands listed for HMS Umbra (P 35)
Please note that we're still working on this section.
| Commander | From | To | ||
| 1 | Lt. Stephen Lynch Conway Maydon, RN | 7 Jul 1941 | 19 May 1943 | |
| 2 | Lt. Philip Henry May, RN | 19 May 1943 | 27 Dec 1943 | |
| 3 | Lt. Ronald Alexander Alane Campbell Ward, DSC, RN | 27 Dec 1943 | ??? | |
| 4 | Lt. William David Stewart Scott, RN | 15 Aug 1944 | 29 Nov 1944 | |
| 5 | Lt.Cdr. Basil Tremayne Simons, RN | 29 Nov 1944 | 21 Mar 1945 | |
| 6 | T/Lt. Hubert Charles Parker, DSC, RNVR | 21 Mar 1945 | Apr 1945 ? | |
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Noteable events involving Umbra include:
17 Jan 1942
HMS P 35 (Lt. S.L.C. Maydon, RN) torpedoed and sank the Italian salvage vessel Rampino (301 GRT) north-north-east of Sousse, Tunisia in position 35°59'N, 10°46'E.
Umbra picks up the Rampino's sole survivor. (see map)
3 Feb 1942
HMS P 35 (Lt. S.L.C. Maydon, RN) torpedoed and damaged the Italian merchant Napoli (6142 GRT) about 30 nautical miles east of Sousse, Tunisia. The ship was beached and destroyed by aircraft on the 11th.
18 Apr 1942
HMS P 35 (Lt. S.L.C. Maydon, RN) attacked the Italian merchant Nino Bixio (7137 GRT) about 40 nautical miles south-west of Pantelleria Island in position
35°05'N, 11°49'E. All torpedoes fired missed their target. (see map)
19 Apr 1942
HMS P 35 (Lt. S.L.C. Maydon, RN) torpedoed and sank the Italian merchant Assunta De Gregori (4219 GRT) off Sfax, Tunisia in position 34°55'N, 11°42'E. (see map)
15 Jun 1942
At 0645 hours HMS P 35 (Lt. S.L.C. Maydon, RN) fired torpedoes at the Italian battleship Littorio. The torpedoes however miss their target. Position 35°47'N, 19°03'E.
At 1151 hours HMS P 35 torpedoes and sank the Italian heavy cruiser Trento in position 35°45'N, 19°04'E. Trento was already damaged by a torpedo from a British Beaufort aircraft (217. Sqn. RAF based at Malta). (see map)
27 Aug 1942
HMS P 35 (Lt. S.L.C. Maydon, RN) torpedoed and sank the Italian transport ship Manfredo Campiero (5463 GRT) about 35 nautical miles west of Cape Spada, Crete in position 35°41'N, 23°01'E. (see map)
27 Sep 1942
HMS P 35 (Lt. S.L.C. Maydon, RN) torpedoed and damaged the Italian merchant Francesco Barbaro (6343 GRT) about 35 nautical miles south of Cape Marathia, Zakynthos Island, Greece in position 37°04'N, 20°36'E. The tanker later sank some 50 nautical miles south-west of Cape Marathia, Zakynthos Island, Greece in position 37°15'N, 19°55'E after a second attack by HMS Umbra. (see map)
23 Oct 1942
HMS P 35 (Lt. S.L.C. Maydon, RN) torpedoed and destroys the grounded German supply ship Amsterdam (8670 GRT) off Khoms, near Tripoli, Libya. She also sank the Italian tug Pronta (182 GRT) that is trying to salvage the Amsterdam. The Amsterdam was grounder after being hit by a torpedo during an air attack.
17 Nov 1942
HMS P 35 (Lt. S.L.C. Maydon, RN) torpedoed and damaged the Italian troop transport Piemonte (15209 GRT) 4 nautical miles bearing 310 of Capo Rasocolmo, Sicily, Italy in position 38°21'N, 15°28'E. (see map)
2 Dec 1942
HMS P 35 (Lt. S.L.C. Maydon, RN) torpedoed and sank the Italian merchant Sacro Cuore (1097 GRT) about 15 nautical miles east of Mahdia, Tunisia in position 35°27N, 11°22E. (see map)
9 Dec 1942
HMS P 35 (Lt. S.L.C. Maydon, RN) torpedoed and sank the German merchant S?llberg (1663 GRT) south of Hammamet, Tunisia in position 36°14N, 10°32'E. (see map)
13 Dec 1942
HMS P 35 (Lt. S.L.C. Maydon, RN) torpedoed and damaged the German troop transport Macedonia (2875 BRT) about 5 nautical miles north of Sousse, Tunisia in position 35°54'N, 10°39'E. The damaged German ship is beached and abandoned. (see map)
9 Jan 1943
HMS P 35 (Lt. S.L.C. Maydon, DSO, RN) torpedoed and sank the Italian merchant Emilio Morandi (1523 GRT) about 35 nautical miles east-north-east of Sousse, Tunisia in position 35°59'N, 11°22'E. (see map)
11 Jan 1943
HMS P 35 (Lt. S.L.C. Maydon, DSO, RN) attacked the Italian sailing vessels Nuovo Domenico and (25 GRT) and Concetta Falco (152 GRT) with gunfire in the Gulf of Hammamet in position 36°24'N, 10°33'E. The Nuovo Domenico is damaged during the attack.