Longhirst
| Name | Longhirst |
| Type | Steamer |
| GRT | 3,053 tons |
| Country |  British |
| Built | 1904 |
| Builder | W. Gray & Co., Ltd., West Hartlepool |
| Operator | Pyman, Watson & Co., Ltd., Cardiff |
| History |
U-boat attacks on Steamer Longhirst
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 23 Feb 1917 | U 35 (Lothar von Arnauld de la Perière) | Sunk | 20 miles E of Cape Bon at 7:15am | 37.08N, 11.25E | Philippeville - Salonica | barley & hay | 2 |
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