Southesk
| Name | Southesk |
| Type | Navy Drifter |
| GRT | 93 tons |
| Country |  British |
| Built | 1912 |
| Builder | J. Duthie Torry SB. Co., Aberdeen |
| Operator | Royal Navy |
| History | Peace-time operator: J Johnstone & Sons Ltd., Montrose |
U-boat attacks on Navy Drifter Southesk
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 7 Jul 1917 | UC 33 (Martin Schelle) | Sunk | Mined in Auskerry Sound | 59.03N, 02.34W | 4 |
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