Dinorwic
| Name | Dinorwic |
| Type | Sailing vessel |
| GRT | 124 tons |
| Country |  British |
| Built | 1862 |
| Builder | Jones, Port Dinorwic |
| Operator | Cornish Traders Ltd. (A. W. Chard), Falmouth |
| History | Wooden three-masted schooner. |
U-boat attacks on Sailing vessel Dinorwic
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 15 Jul 1917 | UB 40 (Hans Howaldt) | Sunk | Stoped and scuttled 10 miles SxE of Hastings | Weston Point - Tréport | coal | 0 |
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