Mainline steam trains in Great Britain
The most famous steam locomotive operating on the British main line is the 1923 built "Flying Scotsman". After being taken into public ownership in 2004, following a decade long refit it returned to mainline service in 2016. The fastest steam locomotive ever built, the 1938 built "Mallard", was also certified for main line operation briefly in the 1980s.
Sentetsu Pashi class locomotives
In total, there were 144 Pashi type locomotives of five distinct classes built for Sentetsu:Of these, the Pashishi class was the most numerous, and the Pashiko class was the heaviest and fastest steam locomotive ever to be operated by a Korean railway company.