Nummer: 21009
| Area : | Arctic Ocean |
| Sea area : | North Norway |
| Date of attack : | 09.12.1944 |
| Time of attack : | 12:50 |
| Nationality of U-boat : | German |
| U-boat : | U 997 |
| Commander : | Lehmann |
| Grid : | AC 8856 |
| presumed target type : | Destroyer |
| presumed result : | damaged |
| Number of torpedoes/mines : | 1 |
| Used weapon(s) : | Torpedo with preset course |
| Convoy : | Task F. |
| Date of observation : | 09.12.1944 |
| Nationality of target : | Soviet |
| Actual type of target : | Destroyer |
| Name of target : | Zhivuchii ex Richmond |
| Year of launch : | 1917 |
| Actual tonnage : | 1190 ts |
| Actual result : | target visibly missed |
| Position of target : | off Kola |
| Footnote : | U-997 assumed a hit but missed in reality, and "Zhivuchii" and "Razumnyi" dropped D/Cs on her. |
Destroyer Zhivuchii ex Richmond ex British Richmond (bis 1941)
| Convoy : | Task F. |