Onesta
| Name | Onesta |
| Type | Steamer |
| GRT | 2,674 tons |
| Country |  Italian |
| Built | 1896 |
| Builder | Russell & Co., Port Glasgow |
| Operator | Flli. Beraldo, Genoa |
| History |
U-boat attacks on Steamer Onesta
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 7 Aug 1917 | UC 63 (Karsten von Heydebreck) | Sunk | near Inner Dowsing LV | Newcastle - Genoa | coal | 0 |
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