Two operational among four preserved, remainder scrapped in 1974
TheClass C61 (C61形) is a class of steam locomotives formerly operated in Japan. The class was the first type in Japan to use the4-6-4 "Hudson"wheel arrangement and was designed byHideo Shima. A total of 33 locomotives in the class were built between 1947 and 1949 (one in 1947, 19 in 1948, and 13 in 1949). The locomotives were not built entirely from scratch, however, but used boilers from formerD51 2-8-2 "Mikado" freight locomotives.[2]
The immediate post-war years saw a dramatic decline in freight, while at the same time passenger traffic once again surged, requiring a programme to rapidly build new passenger locos (classesC57 andC58) as well as rebuilding passenger locos from former freight types (classes C61 andC62). These nominal conversions were also seen as a way of bypassing the difficulties in obtaining approval from GHQ (General Headquarters, orSupreme Commander for the Allied Powers) for building completely new locomotives at the time.[2]
The locomotives were notable in being the first in Japan to incorporate automatic stokers. The first eighteen locos delivered were allocated to Utsunomiya and Sendai depots to work express passenger duties on theTōhoku Main Line. Nine locos were allocated to Oku and Mito depots to work on Jōban Line duties, and six locos were delivered to Tosu depot in Kyūshū to work on theKagoshima Main Line. With the spread of electrification together with the influx ofC59s displaced fromTōkaidō Main Line duties, the C61s found themselves gradually pushed further north to Morioka and Aomori depots. In later years, they were to be seen at the head of the newly inauguratedHakutsuru limited express (between Sendai and Aomori) and theHayabusa blue train (between Hakata and Kagoshima). With the completion of electrification from Morioka to Aomori in October 1968, the six last remaining C61s were moved to Aomori depot where they worked on theŌu Main Line between Akita and Aomori. The six Kagoshima-based locos originally delivered new to Kyūshū were withdrawn, but the six remaining Tōhoku locos were transferred to Miyazaki depot in October 1971 to work on theNippō Main Line between Miyazaki and Kagoshima. They worked there until finally being withdrawn in 1974.