Daleby
| Name | Daleby |
| Type | Steamer |
| GRT | 3,628 tons |
| Country |  British |
| Built | 1900 |
| Builder | Ropner & Son, Stockton |
| Operator | Sir R. Ropner & Co., Ltd., West Hartlepool |
| History |
U-boat attacks on Steamer Daleby
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 29 Apr 1917 | U 70 (Otto Wünsche) | Sunk | 180 miles NW of Fastnet | Huelva - Garston | copper & silver ore | 25 |
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