Nummer: 21416
| Area : | Baltic Sea |
| Sea area : | Gulf of Finland |
| Date of attack : | 03.07.1941 |
| Nationality of U-boat : | Finnish |
| U-boat : | VESIKKO |
| Commander : | Aittola |
| Grid : | AO 3374 |
| presumed target type : | Steam Freighter |
| presumed tonnage : | 4000 BRT |
| presumed result : | sunk |
| Number of torpedoes/mines : | 2 |
| Used weapon(s) : | Torpedo(es) |
| Date of observation : | 03.07.1941 |
| Time of observation : | 14:31 |
| Nationality of target : | Soviet |
| Actual type of target : | Steam Freighter |
| Name of target : | Vyborg |
| Year of launch : | 1938 |
| Actual tonnage : | 3183 BRT |
| Actual result : | sunk |
| Position of target : | 60.05n 27.34e |
| Footnote : | Finnish sources claim that "Vyborg" was sunk by "Vesikko" with two torpedos (only the first one had been a hit). |
| related attacks : | Angriff 1 |
Steam Freighter Vyborg ex German Memel (bis 1940)
| updated on: | 12.12.2013 |
| Remark: | "target sunk 14.15" |
| Changes: | 1) Aromaa: 3.7.1941 Vessiko 13.25 (and 13.34) |