Yser
| Name | Yser |
| Type | Steamer |
| GRT | 3,545 tons |
| Country |  French |
| Built | 1900 |
| Builder | C. S. Swan & Hunter, Ltd., Newcastle |
| Operator | French Government |
| History |
U-boat attacks on Steamer Yser
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 6 Nov 1915 | U 38 (Max Valentiner) | Sunk | 20 miles NNW of Cap de Fer, Algeria | 37° 00'N, 7° 15'E | Cardiff - Bizerta | general cargo |
Position of attack on Yser
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