Prateado
| Name | Prateado |
| Type | Sailing vessel |
| GRT | 24 tons |
| Country |  Portuguese |
| Built | |
| Builder | ?, Setubal |
| Operator | Vitorino M. Rodrigues and others, Setubal |
| History |
U-boat attacks on Sailing vessel Prateado
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 4 Sep 1918 | U 22 (Hinrich Hermann Hashagen) | Damaged | Off the Portuguese coast | Setubal - Lisbon | timber | 0 | |
| Sunk by artillery per KTB, Portuguese sources say vessel was towed in | ||||||||
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