The Great Northern Railway (GNR) Class O1 was a class of two-cylinder 2-8-0 steam locomotive designed by Nigel Gresley for heavy freight work and built by the GNR between 1913 and 1919.
History Gresley designed the O1 2-8-0 for the heavy coal trains on the mainline from Grantham to London, ordering five examples 1913, which were completed at Doncaster in 1914. A further fifteen were ordered in January 1916, but due to the First World War delays were incurred and construction was transferred to the North British Locomotive Company, who delivered the first ten in April 1918, followed by a further five in October and November 1919.
+ Table of orders and numbers Year Order Manufacturer Serial number Quantity GNR Nos. LNER Nos. LNER 1944 Nos. Notes 1913–14 EO 274 Doncaster Works 1411–1413, 1415, 1418 5 456–460 3456–3460 3475–3479 1919 North British Locomotive Co.(Hyde Park Works) 22060–22069 10 462–471 3462–3471 3480–3489 1919 North British Locomotive Co.(Atlas Works) 22099–22103 5 472–476 3472–3476 3490–3494
The class was re-designated O3 by the London and North Eastern Railway in 1944 to release the O1 classification for use with the LNER Thompson Class O1 introduced during the Second World War.
British Railways Seventeen examples survived into British Railways ownership in 1948, but all had been withdrawn by 1952.
+Table of withdrawals Year Quantity inservice atstart of year Quantitywithdrawn Locomotive numbers Notes 1947 20 3 3487, 3490, 3492 1948 17 2 3489/94 1949 15 0 – 1950 15 1 63491 1951 14 10 63475/77–81/83/85–86/93 1952 4 4 63476/82/84/88
References
External links LNER encyclopedia