Cilurnum
| Name | Cilurnum |
| Type | Steamer |
| GRT | 3,126 tons |
| Country |  British |
| Built | 1902 |
| Builder | Richardson, Duck & Co., Stockton |
| Operator | Hall Bros. SS. Co., Ltd. (Hall Bros.), Newcastle |
| History |
U-boat attacks on Steamer Cilurnum
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 19 Apr 1917 | UC 21 (Reinhold Saltzwedel) | Sunk | 5 miles SW of Pointe de Penmarch | 47° 45'N, 4° 30'W | Cardiff - La Pallice | coal | 1 |
Position of attack on Cilurnum
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