Dafni
| Name | Dafni |
| Type | steamer |
| GRT | 1,190 tons |
| Country |  Greek |
| Built | 1881 |
| Builder | W. B. Thompson, Dundee |
| Operator | Pandelis Bros., Piraeus |
| History |
U-boat attacks on steamer Dafni
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 15 Dec 1917 | UB 34 (Hellmuth von Ruckteschell) | Sunk | Torpedoed 3 miles NNE of the Heugh, W Hartlepool | 54.44N, 01.09W | Rouen - Sunderland | 0 |
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