WHD-SAN-KoPT --- With O-B-O wheel arrangement, this is a broad-gauge, Diesel Hydraulic shunting locomotive was built by Suri & Nayar (SAN) Engineering & Locomotive industrial, Bengaluru & it belongs to Kolkata Port Trust Authority. This rare species was spotted inside the Kolkata Dockyard Khidderpore on a hot sunny afternoon. Photographed by Somsubhra Das. D.O.P. - 4th September 2013.