Nummer: 00424
| Area : | Western Area |
| Sea area : | Norway West Coast |
| Date of attack : | 20.10.1939 |
| Time of attack : | 07:32 |
| Nationality of U-boat : | German |
| U-boat : | U 34 |
| Commander : | Rollmann |
| Grid : | AF 7975 |
| presumed target type : | Steam Freighter id |
| presumed tonnage : | 935 BRT |
| presumed result : | sunk |
| Used weapon(s) : | Gunfire |
| Date of observation : | 21.10.1939 |
| Nationality of target : | Swedish |
| Actual type of target : | Steam Freighter |
| Name of target : | Gustaf Adolf |
| Year of launch : | 1920 |
| Actual tonnage : | 926 BRT |
| Actual result : | sunk |
| Position of target : | 61.00n 00.48e |
