The MLW RS-23 was a 1,000 hp (746 kW) diesel-electric locomotive built by Montreal Locomotive Works between August 1959 and September 1960. Production totaled 40 locomotives.

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Quick Facts Type and origin, Power type ...

MLW RS-23
GWWD 202 in Winnipeg on March 21, 2019.
Type and origin Power type Diesel-electric Builder Montreal Locomotive Works Model RS-23 Build date August 1959 to September 1960 Total produced 40
Specifications Configuration: ​  • AAR B-B  • UIC Bo'Bo' Gauge 4 ft 8+1⁄2 in (1,435 mm) Prime mover Alco 251D RPM range 1025 / 325 Engine type Four-stroke diesel Generator DC generator Traction motors 4 x GE 752 DC traction motors Transmission Electric Loco brake Air, optional dynamic Train brakes Air
Performance figures Power output 1,000 hp (750 kW)
Career Locale Canada and United States

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The largest fleet of these locomotives was operated by Canadian Pacific Railway, which classed them DRS-10c in that company's locomotive classification system.

• List of MLW diesel locomotives