The EMD FT was a 1350 hp diesel-electric locomotive produced between November 1939, and November 1945, by General Motors' Electro-Motive Division (the "F" stood for "freight" and the "T" for 2700 hp with a two-unit set). All told 555 cab-equipped A unit

A unit

An A unit, in railroad terminology, is a locomotive equipped with a driving cab, or crew compartment, and the control system to control other locomotives in a multiple unit, and therefore able to be the lead unit in a consist of several locomotives controlled from a single position...

s were built, along with 541 cabless booster B unit

B unit

A "B" unit, in railroad terminology, is a locomotive unit which does not have a driving cab, or crew compartment, and must therefore be controlled from another, coupled locomotive with a driving cab . The term booster unit is also used. The concept was largely confined to North America...

s, for a grand total of 1,096 units. The locomotives were all sold to customers in the United States

United States

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

. It was the first model in EMD's very successful F-unit

EMD F-unit

EMD F-units were a line of Diesel-electric locomotives produced between November 1939 and November 1960 by General Motors Electro-Motive Division and General Motors-Diesel Division. Final assembly for all F-units was at the GM-EMD plant at La Grange, Illinois and the GMDD plant in London, Ontario...

 series of cab unit

Cab unit

A cab unit and a carbody unit are body styles of locomotives in railroad terminology. While closely related, they are not exactly the same....

 freight diesels, and was the locomotive that convinced many U.S.