Llwyngwair
| Name | Llwyngwair |
| Type | Steamer |
| GRT | 1,304 tons |
| Country |  British |
| Built | 1913 |
| Builder | Antwerp Engineering Co., Ltd., Hoboken |
| Operator | Harries Bros. & Co., Swansea |
| History |
U-boat attacks on Steamer Llwyngwair
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 26 Apr 1918 | UC 64 (Ferdinand Schwartz) | Sunk | Torpedoed 5 miles SSE of Seaham Harbour | Dunkerque - Tyne | in ballast | 8 |
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