Marchiena
| Name | Marchiena |
| Type | Sailing vessel |
| GRT | 170 tons |
| Country |  Dutch |
| Built | 1912 |
| Builder | W. Mulder, Vierverlaten |
| Operator | H. van der Laan, Gromingen |
| History | Steel-hulled schooner. |
U-boat attacks on Sailing vessel Marchiena
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 9 May 1917 | UC 17 (Ralph Wenninger) | Sunk | Stopped and sunk by gunnery SW of Beachy Head | ||||
| Lifeboats not recovered vessel posted as missing. | ||||||||
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