Nummer: 00803
| Area : | Western Area |
| Sea area : | North Sea |
| Date of attack : | 06.12.1939 |
| Time of attack : | 23:51 |
| Nationality of U-boat : | German |
| U-boat : | U 31 |
| Commander : | Habekost |
| Grid : | AN 4887 |
| presumed target type : | Steam Freighter |
| presumed tonnage : | 6000 BRT |
| presumed result : | sunk |
| Number of torpedoes/mines : | 1 |
| Used weapon(s) : | Torpedo(es) |
| Date of observation : | 06.12.1939 |
| Nationality of target : | Swedish |
| Actual type of target : | Steam Freighter |
| Name of target : | Vinga |
| Year of launch : | 1923 |
| Actual tonnage : | 1974 BRT |
| Actual result : | sunk |
| Position of target : | 56.25n 01.08e |
