CN O-18-a is a class of

0-6-0 Under the Whyte notation for the classification of steam locomotives, represents the wheel arrangement of no leading wheels, six powered and coupled driving wheels on three axles and no trailing wheels. This was the most common wheel arrangemen ...

steam locomotive A steam locomotive is a locomotive that provides the force to move itself and other vehicles by means of the expansion of steam. It is fuelled by burning combustible material (usually coal, oil or, rarely, wood) to heat water in the locomot ...

s formerly owned by

Canadian National Railway The Canadian National Railway Company (french: Compagnie des chemins de fer nationaux du Canada) is a Canadian Class I freight railway headquartered in Montreal, Quebec, which serves Canada and the Midwestern and Southern United States. CN i ...

s. They were switchers built by the Grand Trunk Railway's Point St. Charles Shops. Canadian National used the letter O to designate 0-6-0s. The Grand Trunk Railway built 50 of these locomotives between 1919 and 1921 and designated them F9 Class. The GTR also had 25 more built in 1920 by the Lima Locomotive Works for use in the United States. In 1923, the Grand Trunk Railway was absorbed by the Canadian National Railways. CN classified the homebuilt locomotives O-18-a and the Lima-built F9s became GTW O-18-b class. The O-18-a locomotives were numbered 1749–1798 by the Grand Trunk, and were renumbered as 7423–7473 by the Canadian National. They operated right up until dieselisation. Upon retirement, 47 of the 50 locomotives were scrapped, but three were sold. CN 7439 (GTR 1764) was sold to

International Harvester The International Harvester Company (often abbreviated by IHC, IH, or simply International ( colloq.)) was an American manufacturer of agricultural and construction equipment, automobiles, commercial trucks, lawn and garden products, household e ...

in 1958, but was scrapped only three years later in 1961.

Canadian National 7456 Canadians (french: Canadiens) are people identified with the country of Canada. This connection may be residential, legal, historical or cultural. For most Canadians, many (or all) of these connections exist and are collectively the source of ...

(GTR 1781) and

Canadian National 7470 Conway Scenic Railroad (Canadian National) No. 7470 is a preserved class " O-18-a" 0-6-0 " Switcher" type steam locomotive at the Conway Scenic Railroad in North Conway, New Hampshire. History Revenue service The locomotive was built by the ...

(GTR 1795) were sold to

Canada and Dominion Sugar Canada is a country in North America. Its Provinces and territories of Canada, ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world ...

( Chatham, Ontario) in 1959. These two survive to the present. O-18-a number 7456 is at

Montcalm Community College Montcalm Community College (MCC) is a public community college A community college is a type of educational institution. The term can have different meanings in different countries: many community colleges have an "open enrollment" for st ...

as a display locomotive, while number 7470 works at the

Conway Scenic Railroad The Conway Scenic Railroad is a heritage railroad in North Conway, New Hampshire, United States, owned by Profile Mountain Holdings Corp. The railroad operates over two historic railway routes: a line from North Conway to Conway that was for ...

in North Conway, New Hampshire and is currently operational.

References

*{{cite journal , last1=Edson , first1=William D. , last2=Corley , first2=Raymond F. , title=Locomotives of the Grand Trunk Railway , journal=Railroad History , date=Autumn 1982 , issue=147 , publisher=The Railway and Locomotive Historical Society, Inc. , page=142 O-18-a Steam locomotives of Canada 0-6-0 locomotives Railway locomotives introduced in 1919 Grand Trunk Railway Shunting locomotives