Alcyon
| Name | Alcyon |
| Type | Sailing vessel |
| GRT | 59 tons |
| Country |  French |
| Built | |
| Builder | |
| Operator | |
| History |
U-boat attacks on Sailing vessel Alcyon
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 16 Nov 1916 | UC 17 (Ralph Wenninger) | Sunk | north of Ushant | ||||
| or 14/11/1916 | ||||||||
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