Porto
| Name | Porto |
| Type | Sailing vessel |
| GRT | 1,079 tons |
| Country |  Portuguese |
| Built | 1885 |
| Builder | A. McMillan & Son, Dumbarton |
| Operator | A. Gomes, Soc. en Cta., Oporto |
| History | Steel bark. Built as Gartmore. |
U-boat attacks on Sailing vessel Porto
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 27 Jul 1918 | U 140 (Waldemar Kophamel) | Sunk | Stopped and scuttled 550 miles off the American coast or 340 miles 318° bearing from Cape Sable | 39.18N, 60.40W | Savannah-Oporto | barrel staves and 600 bales of cotton |
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