MLW RSC-14

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The MLW RSC-14 (RS-18m) was a diesel-electric locomotive built by Montreal Locomotive Works.

These locomotives began life as MLW RS-18s for the Canadian National Railway (CN). The RSC-14 was created in the mid-1970s to meet CN's requirement for A-1-A trucked locomotives for light rural branchline service, particularly in the Maritimes.

CN retired its older A-1-A configured MLW RSC-13 and MLW RSC-24 models in the mid-1970s and rebuilt several dozen RS-18s using the A-1-A trucks from the scrapped RSC-13 and RSC-24 units. The horsepower rating for the locomotives was lowered from 1800 HP on the RS-18 to 1400 HP, thus the new designation "RSC-14".

The locomotives saw extensive use on Prince Edward Island (see Prince Edward Island Railway), and on branch lines in New Brunswick and Nova Scotia. Most were retired or sold by the mid-1990s.

There are only two of these locomotives left in Canada: