Iolanthe
| Name | Iolanthe |
| Type | Trawler |
| GRT | 179 tons |
| Country |  British |
| Built | 1896 |
| Builder | Cook, Welton, Gemmell, Hull |
| Operator | Hellyer Steam Fishing Co. Ltd., Hull |
| History |
U-boat attacks on Trawler Iolanthe
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 3 May 1915 | U 9 (Johannes Spieß) | Sunk | Stopped and scuttled 140 miles ENE of Hornsea | 0 |
If you can help us with any additional information on this vessel then please contact us.