Anna Prosper
| Name | Anna Prosper |
| Type | Fishing vessel |
| GRT | 70 tons |
| Country |  Belgian |
| Built | 1906 |
| Builder | Louis Deweert, Ostende |
| Operator | Henri Steenkiste |
| History | Fishing registration: O 174 |
U-boat attacks on Fishing vessel Anna Prosper
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 5 Feb 1917 | UB 40 (Hans Howaldt) | Sunk | Stopped and sunk 3 miles of the NNE Smith’s Knoll Spar buoy | 52.47N, 02.15E | |||
| 52.45N, 02.16E per KTB, | ||||||||
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