Portia
| Name | Portia |
| Type | Steamer |
| GRT | 1,127 tons |
| Country |  Norwegian |
| Built | 1914 |
| Builder | Trondhjems Mek. Verks., Trondheim |
| Operator | A/S Portia (J. Lund & Co.), Bergen |
| History |
U-boat attacks on Steamer Portia
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 1 Feb 1917 | UC 47 (Paul Hundius) | Sunk | Mined off Flamborough Head | 53° 45'N, 0° 19'E | Sunderland - Bilbao | coal | 0 |
Position of attack on Portia
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