Unione
| Name | Unione |
| Type | Sailing vessel |
| GRT | 25 tons |
| Country |  Italian |
| Built | |
| Builder | |
| Operator | |
| History |
U-boat attacks on Sailing vessel Unione
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 23 Nov 1915 | k.u.k. U16 (Orest Ritter von Zopa) | Sunk | 41° 46'N, 19° 32'E | 0 |
Position of attack on Unione
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