The sole member of the class was built byBeyer, Peacock & Company,Manchester, England in 1910, and entered service the following year, as no. 31 in the DHR fleet.[1] Its basic dimensions were designed to be roughly equivalent to those of two of the DHR's existingB Class0-4-0ST engines, with the intention that it would produce approximately double the power of those engines. However, in practice it was only able to haul 65% more load than a single B Class unit.[3]
Although the DHR did not acquire any further articulated locomotives, no. 31 remained in service until November 1954.[3]
Hills, Richard L (2000).The Origins of the Garratt Locomotive. East Harling, Norfolk, UK: Plateway Press.ISBN1871980437.
Hughes, Hugh (1976).Steam in India. Truro, Cornwall: D. Bradford Barton Ltd.ISBN0851532586.
Hughes, Hugh (1994).Indian Locomotives: Part 3 – Narrow Gauge 1863–1940. Harrow, Middlesex: The Continental Railway Circle.ISBN0-9521655-0-3.OCLC39496543.
Manning, Peter (2013).The Anatomy of the Darjeeling Garratt and the Engine it tried to Replace: the DHR Class "B" saddle tank. Coromandel Valley, South Australia: Peter Manning Design & Drafting.ISBN9780980621228.
Media related toDHR D Class at Wikimedia Commons.jpg)
