Between 1963 and 1984 a total 192 of these B-B type were built. The engine was a a Finnish-built Tampella SACM MGO V16 BSHR with two Brown Boveri-VTR 200 M turbochargers, output power stated as 1300 hp.
World transport history
No date -- 1960s? The NSB Class 27a was a series of 17 Norwegian steam locomotives built between 1910 and 1921 by Thunes mekaniske verksted and Hamar Jernstøperi. Designed for express trains on lines with 9-ton axle loads, they operated until 1970 on routes including Kongsvingerbanen and Rørosbanen, with unit 234 preserved at the Norwegian Railway Museum.