Elsa
| Name | Elsa |
| Type | Sailing vessel |
| GRT | 165 tons |
| Country |  Italian |
| Built | 1902 |
| Builder | F. Terrizzano, Oneglia |
| Operator | G. Tomei, Viareggio |
| History | Wooden barkentine |
U-boat attacks on Sailing vessel Elsa
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 28 Jan 1918 | UB 49 (Hans von Mellenthin) | Sunk | Stopped and sunk off the west coast of Italy | 41° 23'N, 12° 37'E |
Position of attack on Elsa
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