Nummer: 20021
| Area : | Arctic Ocean |
| Date of attack : | 22.09.1942 |
| Time of attack : | 10:16 |
| Nationality of U-boat : | German |
| U-boat : | U 408 |
| Commander : | Hymmen |
| Grid : | AA 9227 |
| presumed target type : | Destroyer |
| presumed tonnage : | 1870 ts |
| presumed result : | damaged |
| Used weapon(s) : | Torpedo(es) |
| Convoy : | QP.14 |
| Footnote : | U-408 heard one detonation on a destroyer of the Tribal-class after a run-time of 5:27 min and one more on a ship beyond. |
| Convoy : | QP.14 |
| Route of convoy : | Russia - Iceland |
| Remark to convoy : | Sep 1941 to Dec 1942, then RA (counter traffic = PQ) |