The SR U1 class were three-cylinder 2-6-0 (‘mogul’) steam locomotives designed by Richard Maunsell for passenger duties on the Southern Railway. The fifth member of the Maunsell family of standardised moguls and 2-6-4 locomotives the U1 was the final development of the Maunsell mogul and marked a continuation of the basic principles established by CME George Jackson Churchward for the GWR.
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