San Nicolao
| Name | San Nicolao |
| Type | Steamer |
| GRT | 2,697 tons |
| Country |  Portuguese |
| Built | 1905 |
| Builder | Akt. Ges. “Neptun”, Rostock |
| Operator | Transportes Maritimos do Estado, Lisbon |
| History |
U-boat attacks on Steamer San Nicolao
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 16 Nov 1916 | UC 26 (Matthias Graf von Schmettow) | Sunk | ENE of Isle de Batz | 49° 20'N, 3° 46'W | Lisbon - Havre |
Position of attack on San Nicolao
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