Nummer: 00906b
| Area : | Western Area |
| Sea area : | North Atlantic |
| Date of minelaying : | 27.10.1939 |
| Nationality of U-boat : | German |
| U-boat : | U 31 |
| Commander : | Habekost |
| Grid : | AM 3826 |
| presumed target type : | --- |
| presumed tonnage : | ---- --- |
| presumed result : | hit not ascertained |
| Used weapon(s) : | Sea mine(s) |
| Date of sinking : | 23.12.1939 |
| Nationality of target : | British |
| Actual type of target : | M/S Trawler |
| Name of target : | Promotive |
| Year of launch : | 1908 |
| Actual tonnage : | 78 BRT |
| Actual result : | sunk |
| Position of target : | Loch Ewe |
| related attacks : | Angriff 1 |
M/S Trawler Promotive ex British Trawler, Drifter (bis 1939)