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((Use dmy dates|date=March 2017))
((Use British English|date=March 2017))
((more citations needed|date=October 2016))
((Infobox locomotive 
|powertype       = Steam 
|name            = SECR B1 class
|image           = Tonbridge Locomotive Depot geograph-2651283-by-Ben-Brooksbank.jpg
|caption         = B1 at Tonbridge Locomotive Depot 18 May 1946
|designer        = [[James Stirling (1835-1917)|James Stirling]]
|builder         = ((ubl|[[Neilson, Reid and Company]] (20)|[[Ashford Works]] (9)))
|builddate       = 1898–1899 (as B class)
|totalproduction = 29
|rebuilddate     = 1910–1926 (as B1 class)
|numberrebuilt   = 27 
|whytetype       = [[4-4-0]]
|uicclass        = 2′B 
|gauge           = ((track gauge|ussg))
|leadingdiameter = 
|driverdiameter  = ((convert|7|ft|0|in|m|3|abbr=on))
|length          = 
|locoweight      = ((long ton|45|2))
|fueltype        = Coal  
|fuelcap         = 
|watercap        = 
|boilerpressure  = ((convert|170|lbf/in2|MPa|2|abbr=on))
|firearea        = 
|cylindercount   = Two, inside
|cylindersize    = ((convert|18|x|26|in|mm|0|abbr=on))
|tractiveeffort  = ((convert|14490|lbf|kN|2|abbr=on))
|operator        = ((ubl|[[South Eastern and Chatham Railway]]|→ [[Southern Railway (Great Britain)|Southern Railway]]|→ [[Southern Region of British Railways]]))
|operatorclass   = SECR/SR: B1
|powerclass      = 
|withdrawndate   = 1930–1951
|disposition     = All scrapped
))

The '''SECR B1 class''' was a class of [[4-4-0]] [[Steam locomotive|steam]] [[tender locomotive]] for express passenger service on the [[South Eastern and Chatham Railway]].  These engines were originally designed by [[James Stirling (1835-1917)|James Stirling]] for the [[South Eastern Railway (UK)|South Eastern Railway]] (SER) in 1898 and designated '''B class'''.  The SER was merged into the SECR in 1899 and, between 1910 and 1927 the B class engines were rebuilt with new boilers by [[Harry Wainwright]] to become B1 class.

==Numbering==
Twenty B Class engines were built by [[Neilson, Reid and Company]] and numbered 440-459.  A further 9 were built at the South Eastern Railway's [[Ashford railway works]] and given a jumble of numbers: 217, 13, 21, 101, 34, 17, 132, 186, 189.  They kept these numbers under the SECR.  When the [[Southern Railway (Great Britain)|Southern Railway]] took over in 1923 they initially gave the numbers an "A" prefix and later added 1000 to them.  For example, 440 became A440 and then 1440 and 13 became A13 and then 1013.  A few passed into [[British Railways]] ownership in 1948 and had 30000 added to their numbers but it is believed that only 31446 actually carried its number. All had been withdrawn and scrapped by the end of 1951. None remain today.

==Accidents and incidents==
*On 19 May 1938, locomotive No. 1454 was derailed at ((rws|Blackfriars)) station, [[London]], causing delays for several hours.<ref name=Earnshaw5>((cite book |last=Earnshaw |first=Alan |title=Trains in Trouble: Vol. 5 |year=1989 |publisher=Atlantic Books |location=Penryn |isbn=0-906899-35-4 |page=27 ))</ref>

==References==
((reflist))
((refbegin))
;Bibliography
* ((cite book| title=Ian Allan ABC of British Railways Locomotives, part 2| pages=18–20| edition=1949))
((refend))
Locomotive history of the South Eastern Railway, D.L.Bradley,  Railway correspondence & travel society (RCTS) ((ISBN|0 901115 48 7))

==External links==
((Commons category|SECR B1 class))
* [http://www.semgonline.com/steam/b1(se)_class.html Wainwright B1] ''Southern E-Group''
* [http://www.railuk.info/steam/getsteamclass.php?item=B-1 Class B1 Details] ''RailUK''

((SECR locomotives))

[[Category:South Eastern and Chatham Railway locomotives|B1]]
[[Category:4-4-0 locomotives]]
[[Category:Railway locomotives introduced in 1898]]
[[Category:Scrapped locomotives]]
[[Category:Standard gauge steam locomotives of Great Britain]]

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Retrieved from "https://en.wikipedia.org/wiki/SECR_B1_class"