High Quality Content by WIKIPEDIA articles! The Q Class, is a type of 0-6-0 steam locomotive designed by Richard Maunsell of the Southern Railway and constructed immediately prior to the Second World War, for use on medium-distance freight trains throughout network. Twenty locomotives were built by Maunsell`s successor, Oliver Bulleid, in 1938. The design was relatively old-fashioned and the class was soon afterwards eclipsed by Bulleid`s own more powerful Q1 class. Nevertheless the locomotives performed adequately and reliably on the tasks for which they were designed until their withdrawal in 1965. Only one has survived, and is preserved on the Bluebell Railway.