Llanishen
| Name | Llanishen |
| Type | Steamer |
| GRT | 3,837 tons |
| Country |  British |
| Built | 1901 |
| Builder | Richardson, Duck & Co., Stockton |
| Operator | Llanishen SS. Co., Ltd. (E. Thomas, Radcliffe & Co.), Cardiff |
| History |
U-boat attacks on Steamer Llanishen
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 8 Aug 1917 | U 33 (Gustav Sieß) | Sunk | 8 miles NxE of Cape Creus | 42° 25'N, 3° 20'E | Savona - Melilla | in ballast | 2 |
Position of attack on Llanishen
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