SP30 is a Polish series of diesel passenger locomotives used by PKP. In the 1970s 107 items of SM30 class locomotives were modified to heat old passenger...

wagons with 500 V electric heaters, and as a result their class designation was changed to SP30 (able to pull passenger trains). Those machines remained...

owned by the Free City of Danzig (*) Conversion (*) Conversion (**) Loan PKP classification system History of rail transport in Poland Durrant 1972, p...