| Navy | TheSoviet Navy |
| Type | Submarine |
| Class | S (Stalinec) |
| Pennant | |
| Mod | 2nd group (Type IX-modified) |
| Built by | Dalzavod (Vladivostok, U.S.S.R.) / Yard 202 |
| Ordered | |
| Laid down | 24 Nov 1936 |
| Launched | 27 Nov 1939 |
| Commissioned | 25 Jul 1941 |
| Lost | Dec 1943 |
| History | Pacific fleet, later Northern fleet. Lost by unknown reasons with all hands (52 men). Possiby sunk during an attack by German submarine chasers near Gambiki on 4 December or mined. |
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29 Mar 1943
S-55possibly torpedoed and sank the German merchantAjax (2297 GRT) off the Kongsfjord in position 70°49'N, 29°30'E.
I have also seen this ship listed as being sunk by S-101.
29 Apr 1943
S-55 torpedoed and sank the German merchantSturzsee (708 BRT) off Nordkyn.
12 Oct 1943
S-55 torpedoed and sank the GermanAmmerland (5381 BRT) off the Porsangerfjord in position 70°59'N, 26°26'E.