Barreiro
| Name | Barreiro |
| Type | Steamer |
| GRT | 1,738 tons |
| Country |  Portuguese |
| Built | 1911 |
| Builder | Schiffsw. von Henry Koch, Lübeck |
| Operator | Transportes Maritimos do Estado, Lisbon |
| History |
U-boat attacks on Steamer Barreiro
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 1 May 1917 | UC 69 (Erwin Waßner) | Sunk | about 4 miles off Suances | Lisbon - Rouen | wine & cocoa |
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