Penvearn
| Name | Penvearn |
| Type | Steamer |
| GRT | 3,710 tons |
| Country |  British |
| Built | 1906 |
| Builder | W. Doxford & Sons, Ltd., Sunderland |
| Operator | Penvearn SS. Co., Ltd. (R. B. Chellew), Falmouth |
| History | Turret hull steamer. |
U-boat attacks on Steamer Penvearn
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 1 Mar 1918 | U 105 (Friedrich Strackerjan) | Sunk | 15 miles N1/2W of the South Stack Rock, Holyhead Island | 53.35N, 04.49W | Barrow - Barry Roads | 21 |
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