Isle of Man Steam Railway, "Loch". Loch, like the other locomotives of the Isle of Man Railway was built by the Beyer, Peacock Company of Gorton, Manchester. Number 4 in the fleet, she was built in 1874 and is the oldest surviving locomotive still in service. She was withdrawn from service at the end of the 1995 and transferred to the museum but was returned to service in 2002 and is now a regular fleet member once more.