Irma
| Name | Irma |
| Type | Steamer |
| GRT | 844 tons |
| Country |  French |
| Built | 1911 |
| Builder | Atel. & Chant. de la Loire, Nantes |
| Operator | E. Marcesche & Cie., Mortagne (Lorient) |
| History |
U-boat attacks on Steamer Irma
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 30 Sep 1916 | UB 38 (Erwin Waßner) | Sunk | Captured and then sunk by gunnery 28 miles S of Wolf Rock | 49° 29'N, 5° 42'W | Newport - Mortagne | coal |
Position of attack on Irma
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