Ocean Swell
| Name | Ocean Swell |
| Type | Sailing vessel |
| GRT | 195 tons |
| Country |  British |
| Built | 1875 |
| Builder | Stephen, Fowey |
| Operator | E. Stephens, Fowey |
| History | Wooden barkentine. |
U-boat attacks on Sailing vessel Ocean Swell
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 5 Jul 1917 | UB 31 (Thomas Bieber) | Sunk | Stopped and sunk by gunnery 15 miles SE of Start Point | Granville - Fowey | wooden hoops | 0 |
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