Nummer: 20817b
| Area : | Arctic Ocean |
| Sea area : | North Norway |
| Date of attack : | 24.08.1944 |
| Time of attack : | 03:11 |
| Nationality of U-boat : | German |
| U-boat : | U 363 |
| Commander : | Nees |
| Grid : | AC 5491 |
| presumed target type : | Destroyer |
| presumed result : | sunk |
| Number of torpedoes/mines : | 1 |
| Used weapon(s) : | Acoustic homing torpedo (gnat) |
| Convoy : | JW.59 |
| Actual tonnage : | ---- -- |
| Actual result : | hit not ascertained |
| Footnote : | U-363 heard gnat (end-of-run) detonations after 10:15 min and 11:01 min. |
| related attacks : |
| Convoy : | JW.59 |
| Route of convoy : | Loch Ewe - (Iceland) - Kola Fjord - (Arkhangelsk) |
| Remark to convoy : | Since Dec 1942, former PQ (counter traffic = RA) |