0-12-0

Under the Whyte notation for the classification of steam locomotives, 0-12-0 represents the wheel arrangement of no leading wheels, twelve powered and coupled driving wheels on six axles, and no trailing wheels.

Equivalent classifications

Other equivalent classifications are:

• UIC classification: F (also known as German classification and Italian classification)
• French classification: 060
• Turkish classification: 66
• Swiss classification: 6/6

First example

The only known 0-12-0 was the Pennsylvania, designed by Jame Milholland for the Philadelphia and Reading Railroad and built at its own shops in 1863. It weighed fifty tons and was, at the time, the heaviest steam locomotive in the world. It was intended to haul Pennsylvania coal trains.

References

Ellis, Hamilton (1968). Pictorial encyclopaedia of railways. London: Hamlyn. ISBN 0-600-37585-4. 

White, John H., Jr. (1972). Early Locomotives. New York: Dover. ISBN 0-486-22772-3.