Polkerris
| Name | Polkerris |
| Type | Steamer |
| GRT | 943 tons |
| Country |  French |
| Built | 1889 |
| Builder | Rostocker A.G. für Schiffs u. Maschinenbau, Rostock |
| Operator | Soc. Anon. Polkerris (Paul Mottard), Le Havre |
| History |
U-boat attacks on Steamer Polkerris
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 4 Mar 1918 | UB 80 (Max Viebeg) | Sunk | 10 miles SE of Portland Bill | Penarth - Rouen | coal | 0 |
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