Nummer: 17807
| Area : | Western Area |
| Sea area : | North Atlantic |
| Date of attack : | 13.02.1944 |
| Time of attack : | 20:20 |
| Nationality of U-boat : | German |
| U-boat : | U 518 |
| Commander : | Offermann |
| Grid : | DF 8567 |
| presumed target type : | Escort Carrier |
| presumed result : | sunk ? |
| Used weapon(s) : | Acoustic homing torpedo (gnat) |
| Actual tonnage : | ---- -- |
| Actual result : | hit not ascertained |
| Footnote : | U-518 heard a gnat end-of-run detonation after 13:45 min on a seaplane tender similar to the German "Friesenland". |