Caledonian Railway 294 and 711 Classes
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The Caledonian Railway 294 and 711 Classes (nicknamed "Jumbo") were 0-6-0 steam locomotives designed by Dugald Drummond for the Caledonian Railway (CR) and introduced in 1883. After Drummond's retirement, construction of the class continued under Smellie, Lambie and McIntosh.[1][2]
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711 class No. 57472 at Bo'ness 4 October 1961 | |||||||||||||||||||||||
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Ownership changes
All 244 locomotives survived to be absorbed by the London, Midland and Scottish Railway (LMS) in 1923 and 238 survived into British Railways (BR) ownership in 1948.

Numbering
- 294 Class
| CR nos. | LMS nos. | BR nos. |
|---|---|---|
| Various | 17230–17392 | 57230–57392 |
- 711 Class
| CR nos. | LMS nos. | BR nos. |
|---|---|---|
| Various | 17393–17473 | 57393–57473 |
The BR number series are not continuous because some locomotives were withdrawn before 1948.