| Navy | The Soviet Navy |
| Type | Submarine |
| Class | M (Malyutka) |
| Pennant | |
| Mod | 3rd group (Type XII) |
| Built by | Sudomekh (Leningrad, U.S.S.R.) / Yard 196 |
| Ordered | |
| Laid down | 10 Sep 1936 |
| Launched | 10 Jul 1937 |
| Commissioned | 11 Dec 1937 |
| End service | |
| History | Northern fleet. Stricken on 30 June 1960. |
We don't have any commands listed for USSR M-171
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Notable events involving M-171 include:
13 Sep 1941
M-171 fires two torpedoes against ' what is identified as ' a merchant off Linakhamari. Both torpedoes missed their target.
2 Oct 1941
M-171 fires two torpedoes against the Norwegian merchant Mimona (1147 GRT, offsite link) and the Norwegian merchant Viator (3076 GRT, offsite link) off Linakhamari. Both torpedoes missed their target.
15 Nov 1941
M-171 fires two torpedoes against ' what is identified as ' a merchant of 8000 tons of Kirkenes. Both torpedoes missed their target.
5 Dec 1941
M-171 fires two torpedoes against ' what is identified as ' a merchant of 4000 tons north of Vardo, Norway in position 70°30'N, 30°58'E. Both torpedoes missed their target.
27 Jan 1942
M-171 fires two torpedoes against ' what is identified as ' a merchant of 4000 tons of the Syltefjord in position 70°60'N, 30°58'E. Both torpedoes missed their target.
20 Mar 1942
M-171 fires a torpedo against ' what is identified as ' a auxiliary minesweeper off the Varangerfjord in position 70°00'N, 30°67'E. The torpedo missed its target.
22 Mar 1942
M-171 fires a torpedo against ' what is identified as ' a submarine off the Varangerfjord in position 70°08'N, 30°67'E. The torpedo missed its target. The attack was most likely against U-456 that arrived at Kirkenes that day.
29 Mar 1942
M-171 fires two torpedoes against ' what is identified as ' a submarine in position 70°20'N, 31°25'E. Both torpedoes missed their target. The attack was most likely against U-585 that had departed Kirkenes the previous day.
29 Apr 1942
M-171 torpedoed and sank the German merchant Curityba (4969 GRT) off the Varangerfjord in position 70°12'N, 30°57'E.
Curityba had the auxiliary minesweepers M 5403 and M 5407 aboard, these were also lost when the ship sank.
23 May 1942
While on patrol of the Varangerfjord, M-171 fires two torpedoes against ' what is identified as ' a merchant of 11000 tons. The target was in fact the much smaller Norwegian merchant Vard? (860 GRT, offsite link). The target was not hit.
19 Jun 1942
M-171 fires two torpedoes against ' what is identified as ' a merchant of 4000 tons of the Varangerfjord, north of Kirkenes. Both torpedoes missed their target.
13 Dec 1942
M-171 fires two torpedoes against ' what is identified as ' a merchant of the Varangerfjord. Both torpedoes missed their target.
5 Jan 1943
M-171 fires two torpedoes against ' what is identified as ' a merchant of 12000 tons off the Syltefjord in position 70°67'N, 30°80'E. Both torpedoes missed their target.
29 Jan 1943
M-171 torpedoed and damaged the German transport Ilona Siemers (3243 GRT) off the Persfjord in position 70°52'N, 30°92'E.
18 Feb 1943
M-171 fires two torpedoes against ' what is identified as ' a auxiliary patrol vessel of the Syltefjord. Both torpedoes missed their target.
27 Feb 1943
M-171 fires two torpedoes against the German auxiliary patrol vessel Guschi II of the Varangerfjord. Both torpedoes missed their target.
5 Apr 1943
M-171 fires two torpedoes against ' what is identified as ' a merchant of 2500 tons off the Varangerfjord. Both torpedoes missed their target
12 Oct 1944
M-171 fires two torpedoes against ' what is identified as ' a auxiliary patrol vessel of the Syltefjord in position 70°39'N, 30°30'E. Both torpedoes missed their target.
16 Oct 1944
M-171 fires four (???) torpedoes against ' what is identified as ' a merchant of 8000 tons in the Persfjord / Syltefjord area. All torpedoes fires missed their target.