The Baldwin DS-4-4-1000 were two models of four-axle 1000 horsepower (746 kW) diesel-electric switching locomotives built by the Baldwin Locomotive Works between 1946 and 1951. The first models (56 locomotives) was powered by an 8-cylinder normally aspirated prime mover but from 1948 a change was made to the second model powered by a 6-cylinder turbocharged engine. These two models replaced the VO-1000 in Baldwin’s catalogue and were in turn replaced by the S-12 in 1951.
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