DSB class P

The class P was a series of steam locomotives of the Danish State Railways, designed by chief mechanical engineer O.F.A. Busse and introduced in 1907. With a wheel arrangement of 4-4-2 (2'B1 in UIC classification), they were well suited to express trains, and were the first steam locomotives in Denmark heavier than 100 tons. They saw service on most DSB main lines, but were at their best on the relatively level Copenhagen to Korsør and Fredericia to Esbjerg services. ^[1]

DSB class P
A preserved class P locomotive at the Danish Railway Museum in Odense in 2011
Type and origin Power type Steam Builder Hanomag (19) Schwartzkopff (14) Build date 1907–1910 Total produced 33
Specifications Configuration: ​  • Whyte 4-4-2  • UIC 2'B1 Gauge 1,435 mm (4 ft 8+1⁄2 in) Driver dia. 1,984 mm (6 ft 6.1 in) Length 18.515 m (60 ft 9 in) over buffers Axle load 19 tonnes (18.7 long tons; 20.9 short tons) Total weight 117.4 tonnes (115.5 long tons; 129.4 short tons) Fuel type Coal Fuel capacity 6 tonnes (5.9 long tons; 6.6 short tons) Boiler pressure 15 kg/cm2 (1,470 kPa; 213 psi)
Career Operators DSB Numbers P901–P933 Locale Denmark

Due to shortages of powerful locomotives with low axle load during World War II, seven of the class P locomotives were rebuilt to a 4-6-2 arrangement and designated class PR, starting in 1943. Two of the class P locomotives have been preserved, as well as one unit of class PR.