Nirefs
| Name | Nirefs |
| Type | Steamer |
| GRT | 4,080 tons |
| Country |  Greek |
| Built | 1915 |
| Builder | Craig, Taylor & Co., Ltd., Stockton |
| Operator | Hellenic Co. of Marine Enterprises (A. Palios), Piraeus |
| History |
U-boat attacks on Steamer Nirefs
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 14 Jun 1917 | UC 36 (Gustav Buch) | Sunk | Mined 1.5 miles from the La Vieille LH, near Ushant | New Orleans - Havre |
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