Lysi
| Name | Lysi |
| Type | Sailing vessel |
| GRT | 247 tons |
| Country |  Italian |
| Built | 1914 |
| Builder | B. Gino, Viareggio |
| Operator | A. Santoni, Viareggio |
| History | Wooden brigantine. |
U-boat attacks on Sailing vessel Lysi
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 28 Jan 1918 | UB 49 (Hans von Mellenthin) | Sunk | Stopped and scuttled east of Sardinia. | 40.44N, 09.50E |
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