Nummer: 20517
| Area : | Arctic Ocean |
| Date of attack : | 06.03.1944 |
| Time of attack : | 06:29 |
| Nationality of U-boat : | German |
| U-boat : | U 959 |
| Commander : | Weitz |
| Grid : | AB 8571 |
| presumed target type : | Destroyer |
| presumed result : | sunk |
| Number of torpedoes/mines : | 1 |
| Used weapon(s) : | Acoustic homing torpedo (gnat) |
| Convoy : | RA.57 |
| Actual tonnage : | ---- -- |
| Actual result : | hit not ascertained |
| Footnote : | U-959 heard a gnat (end-of-run) detonation after 13:28 min. |
| Convoy : | RA.57 |
| Route of convoy : | Kola Fjord - Iceland - Loch Ewe |
| Remark to convoy : | Since Dec 1942, former QP (counter traffic = JW) |