Portbail
| Name | Portbail |
| Type | Steamer |
| GRT | 378 tons |
| Country |  French |
| Built | 1904 |
| Builder | R. Williamson & Son, Workington |
| Operator | Bretel frères, St. Vaast |
| History |
U-boat attacks on Steamer Portbail
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 30 Apr 1917 | UB 32 (Max Viebeg) | Sunk | NE of Cap Barfleur | 50° 05'N, 0° 55'W | Swansea - Le Havre | ||
| or late on April 29, 1917. | ||||||||
Position of attack on Portbail
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