Prosper
| Name | Prosper |
| Type | Fishing vessel (smack) |
| GRT | 45 tons |
| Country |  British |
| Built | 1907 |
| Builder | ?, Porthleven |
| Operator | Daniel Chipperfield, Lowestoft |
| History | Fishing registration: LT 1064 |
U-boat attacks on Fishing vessel (smack) Prosper
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 24 Jul 1915 | UB 12 (Hans Nieland) | Sunk | Stopped and scuttled 30 miles ENE of Lowestoft | 0 |
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