. "1846-11-18Z"^^ . "18.983"^^ . "1845-02-20Z"^^ . . "Sold to Castle in 1869 for breaking" . "HMS Niger was an 8-gun (later 14-gun) screw sloop launched on 18 November 1846 from Woolwich Dockyard. She had been intended as a sailing sloop but her design was lengthened to fit a steam engine, and she was fitted with screw propulsion at Deptford Dockyard in 1847-48 prior to completion."@en . "HMS Niger"@en . . "59.1312"^^ . . . "10.3632"^^ .