Nummer: 04308
| Area : | Western Area |
| Sea area : | North Atlantic |
| Date of attack : | 18.02.1941 |
| Time of attack : | 21:33 |
| Nationality of U-boat : | German |
| U-boat : | U 103 |
| Commander : | Schütze |
| Grid : | AL 3488 |
| presumed target type : | Steam Freighter |
| presumed tonnage : | 4199 BRT |
| presumed result : | sunk |
| Number of torpedoes/mines : | 3- |
| Used weapon(s) : | Torpedo(es) |
| Date of observation : | 18.02.1941 |
| Time of observation : | 20:41 |
| Nationality of target : | British |
| Actual type of target : | Motor Freighter |
| Name of target : | Seaforth |
| Year of launch : | 1939 |
| Actual tonnage : | 5459 BRT |
| Actual result : | sunk |
| Position of target : | 58.48n 18.17w |
