Tags: Locomotive.
The Bengal Nagpur Railway class P was a class of four 4-8-2+2-8-4 (“Double Mountain”) Garratt locomotives. It was developed from BNR class N and BNR class NM. The Anuppur-Chirmiri section had a severe curvature and it needed an engine with a trailing bogie. Its boiler was slightly enlarged similar to the NM. Due to its water and coal capacity being less than that of N it could run on 75 lb/yard rails. It could haul 1500 long tons (1500 t) load up a 1 in 91 gradient.