PKP class Ok1
Encyclopedia
Ok1 is the Polish designation of a Prussia
Prussia
Prussia was a German kingdom and historic state originating out of the Duchy of Prussia and the Margraviate of Brandenburg. For centuries, the House of Hohenzollern ruled Prussia, successfully expanding its size by way of an unusually well-organized and effective army. Prussia shaped the history...

n steam locomotive
Steam locomotive
A steam locomotive is a railway locomotive that produces its power through a steam engine. These locomotives are fueled by burning some combustible material, usually coal, wood or oil, to produce steam in a boiler, which drives the steam engine...

, the Prussian P 8
Prussian P 8
The Prussian Class P 8 steam locomotive of the Prussian state railways was built from 1906 onwards by the Berliner Maschinenbau and the Linke-Hofmann factory in Breslau by Robert Garbe...

, used on Polish State Railways
Polskie Koleje Panstwowe
is the dominant railway operator in Poland.The company was founded when the former state-owned operator was divided into several units based on the requirements laid down by the European Union...

. After the end of World War I
World War I
World War I , which was predominantly called the World War or the Great War from its occurrence until 1939, and the First World War or World War I thereafter, was a major war centred in Europe that began on 28 July 1914 and lasted until 11 November 1918...

, 190 Class P 8 engines were handed over as a reparation to Poland, where they were re-designated as Class OK1 locomotives. Production of the P 8 lasted from 1908 until 1928 and this locomotive was used on practically all European railway lines.
In Poland, the engine was used from 1918, and after World War II
World War II
World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

 the Ok1 was the most numerous passenger locomotive in the country. It was used until the late 1970s. A few engines were preserved, including Ok1-359 (see the photograph), which is stabled at the Wolsztyn
Wolsztyn
Wolsztyn is a town in western Poland, on the western edge of Greater Poland Voivodeship...

museum.

Resource

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