Nummer: 20418
| Area : | Arctic Ocean |
| Date of attack : | 30.01.1944 |
| Time of attack : | 03:54 |
| Nationality of U-boat : | German |
| U-boat : | U 957 |
| Commander : | Schaar |
| Grid : | AB 6381 |
| presumed target type : | Destroyer |
| presumed result : | damaged |
| Number of torpedoes/mines : | 1 |
| Used weapon(s) : | Acoustic homing torpedo (gnat) |
| Convoy : | JW.56B |
| Nationality of target : | British |
| Actual type of target : | Destroyer |
| Name of target : | Hardy (R.08) |
| Year of launch : | 1943 |
| Actual tonnage : | 1810 ts |
| Actual result : | hit not ascertained |
| Footnote : | U-957 heard two Gnat end-of-run detonations after 11:45 min and 12:00 min, and observed the hit by U-278 on "Hardy". U-472 claimed this hit. The damaged "Hardy" was sunk by a torpedo from HMS "Venus", which U-601 claimed as its Gnat-hit. |
| Convoy : | JW.56B |
| Route of convoy : | Loch Ewe - (Iceland) - Kola Fjord - (Arkhangelsk) |
| Remark to convoy : | Since Dec 1942, former PQ (counter traffic = RA) |