Nummer: 00904
| Area : | Western Area |
| Sea area : | North Sea |
| Date of minelaying : | 20.12.1939 |
| Nationality of U-boat : | German |
| U-boat : | U 22 |
| Commander : | Jenisch |
| Grid : | AN 5461 |
| presumed target type : | --- |
| presumed tonnage : | ---- --- |
| presumed result : | hit not ascertained |
| Used weapon(s) : | Sea mine(s) |
| Date of sinking : | 23.12.1939 |
| Nationality of target : | British |
| Actual type of target : | Repair Ship |
| Name of target : | Dolphin ex Pandora |
| Year of launch : | 1902 |
| Actual tonnage : | 3099 BRT |
| Actual result : | sunk |
| Position of target : | 55.06n 01.27w |
| updated on: | 01.01.2005 |
| Remark: | uboat.net |