Nikolaos
| Name | Nikolaos |
| Type | Steamer |
| GRT | 3,561 tons |
| Country |  Italian |
| Built | 1906 |
| Builder | J. L. Thompson & Sons, Ltd., Sunderland |
| Operator | Soc. Nazionale di Nav., Genoa |
| History |
U-boat attacks on Steamer Nikolaos
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 3 Feb 1918 | U 101 (Carl-Siegfried Ritter von Georg) | Damaged | Torpedoed in the Bristol Channel, towed Milford Haven | Glasgow - Italy | coal |
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