Iriston
| Name | Iriston |
| Type | Steamer |
| GRT | 3,221 tons |
| Country |  British |
| Built | 1916 |
| Builder | R. Duncan & Co., Ltd., Port Glasgow |
| Operator | Iriston SS. Co., Ltd. (W. S. Miller & Co.), Glasgow |
| History |
U-boat attacks on Steamer Iriston
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 24 Sep 1917 | U 32 (Kurt Hartwig) | Sunk | 7 miles SxW of Cape Camarat, near Toulon | 43.17N, 06.49E | Glasgow - Savona | coal | 0 |
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