NSB Class 88 was a class of six three-car diesel-hydraulic multiple units built by Strømmens Værksted for the Norwegian State Railways. Derived from the German DRG Class SVT 877, the trains were the diesel counterpart of Class 66. The trains were built as express trains on the Bergen Line and the Dovre Line, serving the routes from Oslo to Bergen and Trondheim. The first four units were delivered in 1945 and 1946, but mechanical failures caused them to highly unreliable until 1950. Two more units were delivered in 1958. Retirement started in 1963 and from 1965 the trains were moved to the Røros Line. They left regular service from 1970 and were chopped three years later.