4-6-4

4-6-4 (Baltic, Hudson)

NGR Class H 4-6-4T, SAR Class C2

Equivalent classifications UIC class 2C2 French class 232 Turkish class 37 Swiss class 3/7 Russian class 2-3-2

First known tank engine version First use 1896 Country Colony of Natal Locomotive NGR Class H 4-6-4T Railway Natal Government Railways Designer George William Reid Builder Natal Government Railways Evolved from 4-6-0T Benefits Ran equally well in either direction

First known tender engine version First use 1911 Country France Locomotive 4-cylinder compound Baltic Railway Chemins de fer du Nord Designer Gaston du Bousquet Builder Chemins de Fer du Nord Evolved from 4-6-2

Under the Whyte notation for the classification of locomotives, 4-6-4 represents the wheel arrangement of four leading wheels, six powered and coupled driving wheels and four trailing wheels. In France where the type was first used, it is known as the Baltic while it became known as the Hudson in most of North America.^[1]