Nummer: 03004
| Area : | Western Area |
| Sea area : | North Atlantic |
| Date of attack : | 22.09.1940 |
| Time of attack : | 17:55 |
| Nationality of U-boat : | German |
| U-boat : | U 31 |
| Commander : | Prellberg |
| Grid : | AM 2458 |
| presumed target type : | Trawler, Drifter |
| presumed result : | sunk |
| Used weapon(s) : | Gunfire |
| Date of observation : | 22.09.1940 |
| Nationality of target : | Faroerian |
| Actual type of target : | Trawler, Drifter |
| Name of target : | Union Jack |
| Year of launch : | .. |
| Actual tonnage : | 81 BRT |
| Actual result : | sunk |
| Position of target : | 100sm NWzN Butt of Lewis |