Nummer: 00403
| Area : | Western Area |
| Sea area : | North Sea |
| Date of attack : | 04.10.1939 |
| Time of attack : | 04:45 |
| Nationality of U-boat : | German |
| U-boat : | U 23 |
| Commander : | Kretschmer |
| Grid : | AN 2679 |
| presumed target type : | Steam Freighter id |
| presumed tonnage : | 876 BRT |
| presumed result : | sunk |
| Number of torpedoes/mines : | 1 |
| Used weapon(s) : | Torpedo(es) + Gunfire |
| Date of observation : | 04.10.1939 |
| Time of observation : | 05:50 |
| Nationality of target : | British |
| Actual type of target : | Steam Freighter |
| Name of target : | Glen Farg |
| Year of launch : | 1937 |
| Actual tonnage : | 876 BRT |
| Actual result : | sunk |
| Position of target : | 58.52n 01.31w |
