Polynesien
| Name | Polynesien |
| Type | Passenger steamer |
| GRT | 6,373 tons |
| Country |  French |
| Built | 1890 |
| Builder | Messageries Maritimes, La Ciotat |
| Operator | Messageries Maritimes, Marseille |
| History |
U-boat attacks on Passenger steamer Polynesien
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 10 Aug 1918 | UC 22 (Eberhard Weichold) | Sunk | Torpedoed 7 miles off Grand Harbour, Valetta | Marseille & Bizerta - Salonica | Troops and general cargo | 13 | |
| Polynesien was torpedoed out of a convoy with 499 Serbian troops on board. | ||||||||
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