Nummer: 21012a
| Area : | Arctic Ocean |
| Sea area : | North Norway |
| Date of attack : | 20.12.1944 |
| Nationality of U-boat : | German |
| U-boat : | U 956 |
| Commander : | Mohs |
| Grid : | AC 8973 |
| presumed target type : | Steam Freighter |
| presumed tonnage : | 3000 BRT |
| presumed result : | sunk |
| Used weapon(s) : | Torpedo(es) |
| Footnote : | U-956 reported one ship and one patrol craft sunk. |
| related attacks : | Angriff 1 |