Nummer: 13301
| Area : | Western Area |
| Sea area : | North Atlantic |
| Date of attack : | 02.11.1942 |
| Time of attack : | 08:40 |
| Nationality of U-boat : | German |
| U-boat : | U 521 |
| Commander : | Bargsten |
| Grid : | AJ 8672 |
| presumed target type : | Steam Freighter |
| presumed tonnage : | 6000 BRT |
| presumed result : | sunk |
| Used weapon(s) : | Torpedo coup de grâce |
| Convoy : | SC.107 |
| Date of observation : | 02.11.1942 |
| Nationality of target : | British |
| Actual type of target : | Steam Freighter |
| Name of target : | Hartington |
| Year of launch : | 1932 |
| Actual tonnage : | 5496 BRT |
| Actual result : | sunk |
| Position of target : | 52.30n 45.30w |
| Footnote : | "Hartington", in position 73, was hit by U-522/Schneider and U-438/Franzius, before she was sunk by a coup de grâce from U-521. |
| Convoy : | SC.107 |
| Route of convoy : | Sydney (Nova Scotia) - United Kingdom |
| Remark to convoy : | Slow (Atlantic) Convoys since Aug 1940, fast ones = HX, counter traffic = ON. |