Nummer: 20814b
| Area : | Arctic Ocean |
| Sea area : | North Norway |
| Date of attack : | 24.08.1944 |
| Time of attack : | 02:01 |
| Nationality of U-boat : | German |
| U-boat : | U 668 |
| Commander : | Eickstedt |
| Grid : | AC 5477 |
| presumed target type : | Destroyer |
| presumed result : | sunk |
| Number of torpedoes/mines : | 1 |
| Used weapon(s) : | Acoustic homing torpedo (gnat) |
| Convoy : | JW.59 |
| Actual result : | hit not ascertained |
| Footnote : | U-668 heard two gnat detonations after 3:25 min and 1:35 min, possibly misinterpretations, as the noise may have been the result of several nearby attacks by U-997 or U-668 at the same time. |
| 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) |