Lonclara
| Name | Lonclara |
| Type | Steamer |
| GRT | 1,294 tons |
| Country |  British |
| Built | 1911 |
| Builder | Ropner & Sons, Ltd., Stockton |
| Operator | Port of London Authority, London |
| History | A mud hopper temporarily fitted for cargo service. |
U-boat attacks on Steamer Lonclara
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 4 Jan 1917 | UC 31 (Otto von Schrader) | Sunk | Mined 0,5m E of Hendon Rock Buoy (Sunderland, River Wear) | 4 |
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