Hercules
| Name | Hercules |
| Type | Steamer |
| GRT | 1,295 tons |
| Country |  British |
| Built | 1909 |
| Builder | Bergens Mek. Verks., Bergen |
| Operator | The Shipping Controller (W. Coupland & Co.), London |
| History |
U-boat attacks on Steamer Hercules
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 30 Dec 1917 | UB 21 (Walter Scheffler) | Sunk | 3 miles ENE of Whitby | 54.32N, 00.39W | Tyne - Newhaven | 12 |
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