Nummer: 23001a
| Area : | Mediterranean |
| Sea area : | North African Seaway |
| Date of attack : | 03.02.1942 |
| Time of attack : | 22:57 |
| Nationality of U-boat : | German |
| U-boat : | U 431 |
| Commander : | Dommes |
| Grid : | CO 6877 |
| presumed target type : | Tanker |
| presumed tonnage : | 5000 BRT |
| presumed result : | damaged ? |
| Used weapon(s) : | Torpedo(es) |
| Convoy : | b) |
| Footnote : | U-431 heard one torpedo hit without detonation (a dud). |
| related attacks : | Angriff 1 |
| Convoy : | b) |