Portofino
| Name | Portofino |
| Type | Steamer |
| GRT | 1,754 tons |
| Country |  Italian |
| Built | 1912 |
| Builder | Akt. Ges. “Neptun”, Rostock |
| Operator | Ferrovie dello Stato, Genoa |
| History |
U-boat attacks on Steamer Portofino
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 3 Jun 1917 | UC 47 (Paul Hundius) | Sunk | Mined 3 miles ExN of the Pendeen Light | Penarth - Blaye | 3 | ||
| Mine laid on April 17, 1917. | ||||||||
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