[2] The Pashishi class were superheated two-cylinder locomotives intended for use on high-value passenger trains, of which a total of 82 were built for Sentetsu and for the Central China Railway by Kawasaki and Nippon Sharyō between 1927 and 1943.

[2] From their inception, the Mikasa, Pashishi and Tehoro classes were designed to use the lignite abundant in Korea, which is less efficient than the anthracite the American-built locomotives needed; as such, they all had large heating areas.

A state-of-the-art locomotive in its time, structurally it is generally an American design in its features, with the first dome being a sandbox, and the second being for steam.

After the first four were completed, the design was modified, resulting in a slightly different appearance of the smokestack and the steam dome, and smoke deflectors were added.

Four units, numbers パシシ981–パシシ984, were built in 1936 with partial streamlining, featuring a shroud on top of the boiler from the chimney to the cab, giving an appearance similar to the JNR's D51 22–23 locomotives.

[3] The exact identities of the locomotives that went to the Korean National Railroad is uncertain, but they were designated 파시4 (Pasi4) class, and were used on passenger trains until the 1960s.