4-8-0+0-8-4

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Bengal Nagpur Railway class N No. 815.

A 4-8-0+0-8-4, in the Whyte notation for the classification of steam locomotives by wheel arrangement, is a Garratt articulated locomotive. The wheel arrangement is effectively two 4-8-0 locomotives operating back to back.

Other equivalent classifications are:
UIC classification: 2D+D2 (also known as German classification and Italian classification)
French classification: 240+042
Turkish classification: 46+46
Swiss classification: 4/6+4/6

This was the fifth rarest Garratt arrangement, with a total of 26 constructed. All of these were built by Beyer, Peacock for the 5 ft 6 in (1,676 mm)-gauge Bengal Nagpur Railway. The first sixteen were designated Class N by the system, and were delivered in 1929; ten more arrived in 1931, classified class NM.^[1]

Two of the type survive, both of Class N; No. 811 is operational at Kharagpur Workshop, while No. 815 is at the National Rail Museum, New Delhi.^[2]

[edit] References

1. ^ Gavin Hamilton. Garratt Locomotives produced by Beyer Peacock. The Garratt Locomotive. Retrieved on 2008-01-12.
2. ^ Gavin Hamilton. Surviving Garratt Locomotives. The Garratt Locomotive. Retrieved on 2008-01-12.

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