title: GWR 3511 class
text: # GWR 3511 class
  
  The GWR 3511 class were standard gauge 2-4-0T locomotives designed by William Dean for the Great Western Railway and built in 1885.
  
  ## History
  
  They comprised the last ten of the twenty locomotives of Lot 64. The first ten locomotives of this Lot were built to the broad gauge as the 3501 class.
  
  ## Use
  
  Originally built with condensing apparatus they were used on work through the Severn Tunnel until the ventilation was improved.
  
  ## Rebuilding
  
  The condensing apparatus was soon removed and in 1894/5 they were all rebuilt as 2-4-0 tender locomotives of the 3201 class as were the 3501 class.
  
  