Portaritissa
| Name | Portaritissa |
| Type | Sailing vessel |
| GRT | 16 tons |
| Country |  Italian |
| Built | |
| Builder | |
| Operator | |
| History |
U-boat attacks on Sailing vessel Portaritissa
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 17 Sep 1918 | k.u.k. U27 (Josef Holub) | Sunk | 35° 39'N, 26° 08'E | 0 |
Position of attack on Portaritissa
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