NSB Di 3
The NSB Di 3 is a class of diesel locomotives which was used by NSB on non-electrified stretches of the Norwegian state railway system, such as the Nordlandsbane, the Rørosbane, and the Raumabane.
The locomotives were built by NOHAB between 1957 and 1969 and powered by a General Motors GM 16-567C/E engine. 35 were built, 32 of them being designated Di 3a. Three other locomotives were intended for the Finnish railway company VR, but went to NSB when VR cancelled the order. A little longer and with a slightly different wheel arrangement, they were designated Di 3b. All the Di 3 engines featured a bulldog nose, the only locomotive type in Norway to do so.
In the NSB numbering scheme the Di 3a locos received numbers 3 602 to 3 633 while the b-series was numbered 3 641 to 3 643. They were the dominant engine on the unelectrified stretches before being supplemented by the more powerful NSB Di 4. The last regular use of a Di 3 was on 26 December 2000, although the class remained in sporadic service until 7 January 2001. In passenger traffic, they were replaced by NSB BM93 multiple units , while NSB Di 8 engines took over their light freight train duties. Although the class is now retired from service on NSB, some locomotives have been sold to Kosovo and Italy and five were sold to the Ofotbane.
The Di 3 was one of the most reliable locomotives NSB ever had. They were sometimes used as back-up engines for NSB Di 6 locomotives which turned out to be remarkably unreliable and which were returned to the factory before the Di 3 was retired .
Specifications
- Length:
- a-series: 18.6 m
- b-series: 18.9 m
- Weight: 102 t
- Wheel arrangement:
- Maximum speed:
- a-series: 105 km/h
- b-series: 143 km/h
