Canadian National No. 6400

The Canadian National No. 6400 is a Class U-4-a 4-8-4 "Northern" type steam locomotive built by Montreal Locomotive Works in 1936 for the Canadian National Railway, and the first U-4 class "Confederation" to be delivered.
The Canadian National Railway used this locomotive for passenger service for much of its career.
The Canadian National U-4 class was a result of wind tunnel research conducted by the National Research Council of Canada (NRC) in the 1930's. These locomotives, with their sleek modern style, also became an important marketing tool for the company.
6400 was preserved not because it was the only surviving U-4; but because it attained fame twice. In 1939, it was chosen to handle the Royal Train for King George VI and Queen Elizabeth of Britain when they made an extended visit to Canada. For this occasion, it was painted black and blue. 
During the 1939 Royal Tour, the 6400 only saw use while the train was on CN tracks (since CP tracks were used for half of the journey), and then only in Ontario, with a Mountain (#6028) providing much of the rest of the power of the journey (plus a few Pacifics and two elderly freight Mikados!)
The locomotive was retired from active service sometime in the 1950's. After retirement, the 6400 was placed on display at the National Museum of Science & Technology in Ottawa, Canada. It remains there today, and is also the only surviving U-4 "Confederation". 
== Trivia ==
* It went on display at the 1939 New York World's Fair "Railroads on Parade" exhibit.
* This locomotive was use as the basis of Vinnie in Thomas and Friends, The Great Race. While the numbering comes from the Grand Trunk Western 6407.
==See also==
*Gallery
Category:Steam locomotives
Category:Tender locomotives
Category:Canadian National locomotives
Category:4-8-4 steam locomotives
Category:Eight-coupled locomotives
Category:4-8-4 locomotives
Category:Streamlined locomotives
Category:Built in 1936
Category:Passenger locomotives
Category:Locomotives
Category:Canada
Category:Canadian steam locomotives
Category:MLW locomotives
Category:Sole survivor
Category:Preserved steam locomotives
Category:Prototype locomotives
Category:Standard gauge locomotives
Category:Standard gauge locomotives of Canada
Category:4 foot 8 1⁄2 inch gauge