Nummer: 20310
| Area : | Arctic Ocean |
| Sea area : | Northern Russia |
| Date of attack : | 01.10.1943 |
| Time of attack : | 13:10 |
| Nationality of U-boat : | German |
| U-boat : | U 703 |
| Commander : | Brünner |
| Grid : | AS 2426 |
| presumed target type : | Steam Freighter id |
| presumed tonnage : | 4200 BRT |
| presumed result : | sunk |
| Used weapon(s) : | Torpedo(es) |
| Convoy : | VA.18 |
| Date of observation : | 01.10.1943 |
| Time of observation : | 14:12 |
| Nationality of target : | Soviet |
| Actual type of target : | Steam Freighter |
| Name of target : | Sergei Kirov |
| Year of launch : | 1925 |
| Actual tonnage : | 4146 BRT |
| Actual result : | sunk |
| Position of target : | 75.48n 83.52e |
| Convoy : | VA.18 |
| Route of convoy : | Vilkitzky - Port Dikson (soviet) |
| Remark to convoy : | Since Jul 1943 - during summer only. Annual new numbering |