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EMD SD18 Diesel-Electric Locomotive
The EMD SD18 is a 6-axle diesel locomotive built by General Motors Electro-Motive Division between April 1960 and March 1963. Power was provided by an EMD 567D1 16-cylinder engine which generated 1,800 hp (1.3 MW).

54 examples of this locomotive model were built for American railroads, and 60 for export, including fifteen for Korail (order numbers 700735–700749, serial numbers 28373–28387).

Original Owners
Owner: Bessemer and Lake Erie Railroad

Quantity: 7
Road Numbers: 851-857

Owner: Chesapeake and Ohio Railway

Quantity: 19
Road Numbers: 1800–1818

Owner: Chicago and Illinois Midland Railway

Quantity: 2
Road Numbers: 60-61

Owner: Duluth, Missabe and Iron Range Railway

Quantity: 19
Road Numbers: 175-193

Owner: Reserve Mining Co.

Quantity: 7
Road Numbers: 1226–1232

Owner: RFFSA (export to Brazil)

Quantity: 45
Road Numbers: 3401-3445

Owner: Korea National Railroad (Korail)

Quantity: 15
Road Numbers: 6001-6015

At least four SD18s have been preserved. Chop-nosed Duluth, Missabe & Iron Range 193 is now an operating member of the Lake Superior Railroad Museum collection. They also have DM&IR 316 in their collection, which is an "SDM"; an EMD SD18 given EMD 645 power assemblies by the Missabe. However, it is still labeled as an SD18.

The South Branch Valley Railroad also regularly operates former Bessemer & Lake Erie SD18 853 as their 182.

A fourth unit is Chesapeake and Ohio 7311, in Chessie System colors and with VLIX reporting marks. It was sold to a company in the State of Washington and is slated for a complete rebuild. As of now the unit has been running freights but should be rebuilt soon.This SD18 rides on Alco trucks.

Additionally, both SD18s owned by the Chicago & Illinois Midland are still in operation, and are used by the Illinois Midland Railroad, the successor to the CIM.

EMD SD18 Overview
Type and origin
Power type: Diesel-electric
Builder: General Motors Electro-Motive Division (EMD)
Model: SD18
Build date: April 1960 – March 1963
Total produced: 114
​ • AAR C-C
Gauge: 4 ft 8 1⁄2 in (1,435 mm) standard gauge
Gauge: 5 ft 3 in (1,600 mm), Brazil
Prime mover: EMD 567D1
Engine type: V16 diesel
Cylinders: 16
Performance figures
Power output: 1,800 hp (1.3 MW)

See also:

Electro-Motive Diesel

List of EMD Locomotives

Diesel-Electric Locomotives

GM-EMD logo
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Duluth, Missabe and Iron Range EMD SD18 No. 193 in Palmers, Minnesota.

Duluth, Missabe and Iron Range EMD SD18 No. 193 in Palmers, Minnesota.

By Keon McGarvey - Own work, CC BY-SA 3.0,

​SBVR No. 182, formerly of the Bessemer and Lake Erie Railroad, on a night photoshoot in 2011.

By jpmueller99 from Shenandoah Valley of VA, USA - South Branch Valley 182Uploaded by Mackensen, CC BY 2.0,

​SBVR No. 182, formerly of the Bessemer and Lake Erie Railroad, on a night photoshoot in 2011.
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