Longscar
| Name | Longscar |
| Type | Steamer |
| GRT | 2,777 tons |
| Country |  British |
| Built | 1903 |
| Builder | W. Gray & Co., Ltd., West Hartlepool |
| Operator | T. W. Willis, West Hartlepool |
| History |
U-boat attacks on Steamer Longscar
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 14 Feb 1917 | UC 21 (Reinhold Saltzwedel) | Sunk | 15 miles SW of the Gironde’s mouth | 45.25N, 01.55W | Nantes - Bilbao | in ballast | 0 |
| 2 gunners taken prisoner. | ||||||||
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