Steam locomotive ‘Ajax’, built buy Robert Stephenson & Hawthorn in 1941, was kept in working order and used until the closure of the Dockyard in 1984. During Admiralty ownership, the loco carried the Yard No of 361. After the closure she was placed in secure storage until the opening of The Historic Dockyard in 1985. She was taken out of service from end of October 2011 to be completely stripped down for her third major overhaul. She is now back in service and running beautifully.