Nummer: 03111
| Area : | Western Area |
| Sea area : | North Atlantic |
| Date of attack : | 06.10.1940 |
| Time of attack : | 22:04 |
| Nationality of U-boat : | German |
| U-boat : | U 103 |
| Commander : | Schütze |
| Grid : | AL 7191 |
| presumed target type : | Tanker |
| presumed tonnage : | 10000 BRT |
| presumed result : | sunk |
| Number of torpedoes/mines : | 4 |
| Used weapon(s) : | Torpedo(es) |
| Date of observation : | 06.10.1940 |
| Nationality of target : | Norwegian |
| Actual type of target : | Motor Tanker |
| Name of target : | Nina Borthen |
| Year of launch : | 1930 |
| Actual tonnage : | 6123 BRT |
| Actual result : | sunk |
| Position of target : | 54n 26w |
