Fortuna
| Name | Fortuna |
| Type | Fishing vessel (smack) |
| GRT | 61 tons |
| Country |  British |
| Built | 1894 |
| Builder | Chambers & Colby, Oulton Broad, Lowestoft |
| Operator | Arthur Evans, Lowestoft |
| History | LT 547 |
U-boat attacks on Fishing vessel (smack) Fortuna
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 26 May 1918 | UB 40 (Hans Joachim Emsmann) | Sunk | Stopped and sunk 10 miles NExE of the Smith Knoll Spar buoy | 0 |
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