Serra Do Pilar
| Name | Serra Do Pilar |
| Type | Trawler |
| GRT | 65 tons |
| Country |  Portuguese |
| Built | 1911 |
| Builder | ?, Vigo |
| Operator | Borges & Irmao, Oporto |
| History |
U-boat attacks on Trawler Serra Do Pilar
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 20 Aug 1917 | UB 48 (Wolfgang Steinbauer) | Sunk | Stopped and sunk off Portugal |
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