| Navy | The Royal Navy |
| Type | Submarine |
| Class | U |
| Pennant | P 43 |
| Built by | Vickers Armstrong (Barrow-in-Furness, U.K.) |
| Ordered | |
| Laid down | 30 Dec 1940 |
| Launched | 5 Nov 1941 |
| Commissioned | 19 Feb 1942 |
| End service | 26 Jun 1944 |
| Loss position | |
| History | HMS Unison was transferred on loan to the Soviet Union on 26 June 1944. Renamed V-3 by the Soviets. Returned in 1949 and scrapped at Stockton on 19 May 1950. Commanding Officers: Lt. Anthony Robert Daniell, DSC, RN Lt. Thomas Erasmus Barlow, RN T/Lt. Percy Clive Stanbury Pritchard, RNR |
| Career notes | Became the Soviet submarine V-3 |
Commands listed for HMS Unison (P 43)
Please note that we're still working on this section.
| Commander | From | To | |
| 1 | Lt. Arthur Connuch Halliday, RN | 12 Dec 1941 | 29 Dec 1942 |
| 2 | Lt. Anthony Robert Daniell, DSC, RN | 29 Dec 1942 | 20 Aug 1943 |
| 3 | Lt. Thomas Erasmus Barlow, RN | 20 Aug 1943 | 30 Nov 1943 |
| 4 | T/Lt. Percy Clive Stanbury Pritchard, RNR | 30 Nov 1943 | 26 Jun 1944 |
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Noteable events involving Unison include:
13 Jun 1942
HMS Unison (Lt. A.C. Halliday, RN) fires four torpedoes at the Italian light cruisers Raimondo Montecuccoli and Emanuelle Filiberto Duca d’Aosta south of Sardinia, Italy in position 38º56'N, 09º40'E. The torpedoes however miss their targets.
(see map)
17 Aug 1942
While on patrol in the Ionian Sea, HMS Unison (Lt. A.C. Halliday, RN) attacks the Italian merchant Chisone (6168 GRT) with torpedoes off Zante, Greece. All torpedoes fired missed their target.
21 Aug 1942
HMS Unison (Lt. A.C. Halliday, RN) torpedoes and damages the Italian tanker Pozarica (7751 GRT) off Sivota, Greece in position 38º57'N, 20º24'E. (see map)
10 Oct 1942
HMS Unison (Lt. A.C. Halliday, RN) torpedoes and sinks the Italian merchant Enrichetta (4652 GRT) about 12 nautical miles west-south-west of Kyparissia, Greece in position 37º11'N, 21º26'E. (see map)
16 Nov 1942
At 2250 hours HMS Unison (Lt. A.C. Halliday, RN) fires four torpedoes against ' what is identified as ' a medium-sized tanker east of Isola Marettimo, Italy in position 37º57'N, 11º56'E. All torpedoes fired missed their target.
See also this topic at the forum at warsailors.com (offsite link). (see map)
8 Feb 1943
HMS Unison (Lt. A.R. Daniell, DSC, RN) sinks the Italian sailing vessels Luigi Verni (58 GRT), Carlo P. (64 GRT) and Angela (56 GRT) with gunfire off Al Hammamat, Tunisia.
11 Feb 1943
HMS Unison (Lt. A.R. Daniell, DSC, RN) sinks the German coaster Jaedjoer (309 GRT) with gunfire off Ras Mahmur, Tunisia in position 36º26'N, 10º55'E. (see map)
23 Mar 1943
HMS Unison (Lt. A.R. Daniell, DSC, RN) torpedoes and sinks the Italian tanker Zeila (1835 GRT) off Cape Spartivento in position 37º57'N, 16º10'E. (see map)
21 Apr 1943
HMS Unison (Lt. A.R. Daniell, DSC, RN) torpedoes and sinks the Italian merchant Maria Foscarini (6406 GRT) about 40 nautical miles west of Favignana, Italy in position 37º50'N, 11º30'E. (see map)
16 Jun 1943
HMS Unison (Lt. A.R. Daniell, DSC, RN) torpedoes and sinks the Italian merchant Terni (2998 GRT, former french Azrou) off Catania, Sicily, Italy.