Ostpreussen
| Name | Ostpreussen |
| Type | Steamer |
| GRT | 1,779 tons |
| Country |  British |
| Built | 1901 |
| Builder | F. Schichau, Danzig |
| Operator | The Admiralty (Witherington & Everett), London |
| History |
U-boat attacks on Steamer Ostpreussen
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 25 Nov 1917 | UC 11 (Karl Dobberstein) | Sunk | Mined 1.5 miles E of the Shipwash LV | Sunderland - London | coal | 1 |
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