. . "NER Class Y"@en . "20"^^ . "LNER Class A7"@en . "1911Z"^^ . "1910Z"^^ . "The North Eastern Railway (NER) Class Y (LNER Class A7) 4-6-2T tank locomotives were designed whilst Wilson Worsdell was Chief Mechanical Engineer, but none were built until 1910 by which time Vincent Raven had taken over."@en . .