An EMD SW1000 is a diesel switcher

Switcher

A switcher or shunter is a small railroad locomotive intended not for moving trains over long distances but rather for assembling trains ready for a road locomotive to take over, disassembling a train that has been...

 locomotive

Locomotive

A locomotive is a railway vehicle that provides the motive power for a train. The word originates from the Latin loco – "from a place", ablative of locus, "place" + Medieval Latin motivus, "causing motion", and is a shortened form of the term locomotive engine, first used in the early 19th...

 built by General Motors Electro-Motive Division between June 1966 and October 1972. Power was provided by an EMD 645E 8-cylinder

Cylinder (engine)

A cylinder is the central working part of a reciprocating engine or pump, the space in which a piston travels. Multiple cylinders are commonly arranged side by side in a bank, or engine block, which is typically cast from aluminum or cast iron before receiving precision machine work...

 engine which generated 1000 hp. This locomotive was built on the same common frame as the EMD SW1500

EMD SW1500

The EMD SW1500 was a diesel locomotive intended for switching service and built by General Motors' Electro-Motive Division between June 1966 and January 1974. 808 examples were constructed. It was closely related to the less powerful EMD SW1000 model, forming a line of switchers powered by the new...

, giving it an overall length of 44 in 8 in (13.61 m).

114 examples of this locomotive model were built for United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

railroads and industrial operations. One unit was exported to Jamaica for a mining operation and 4 units were exported to Mexican Industrial concerns.