Nummer: 23111
| Area : | Mediterranean |
| Sea area : | Eastern Mediterranean |
| Date of minelaying : | 14.04.1942 |
| Nationality of U-boat : | German |
| U-boat : | U 331 |
| Commander : | Tiesenhausen |
| Grid : | Beirut |
| presumed target type : | --- |
| presumed tonnage : | ---- --- |
| presumed result : | hit not ascertained |
| Used weapon(s) : | Sea mine(s) |
| Footnote : | U-331 laid a minefield off Beirut, three mines of which were swept on April 28th, 1942. - A ship inside the harbor was attacked while barges were alongside. A large fire- and smoke-column was seen. The Norwegian freighter "Lyder Sagen" (3.944 grt) was not damaged. |