Fido
| Name | Fido |
| Type | Sailing vessel |
| GRT | 1,459 tons |
| Country |  Norwegian |
| Built | 1895 |
| Builder | Russell & Co., Port Glasgow |
| Operator | A/S Fido (Mathias Hansen), Kristiansand |
| History | Steel-hulled bark. Built as Cloch. |
U-boat attacks on Sailing vessel Fido
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 20 Jun 1917 | U 19 (Johannes Spieß) | Sunk | Stopped and scuttled 12 miles SWxW1/2W of Udsire | Galvaston - Odesnse (or Copenhagen) | oilcake | 0 |
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