NER Class S

{{Use dmy dates|date=August 2017}}

{{Use British English|date=August 2017}}

{{refimprove|date=December 2016}}

{{Infobox locomotive

| name = NER Class S
LNER Class B13

| image = BASA-3K-7-518-71.jpg

| alt =

| caption = 2010 with the Royal Train (Date and location unknown)

| powertype = Steam

| designer = Wilson Worsdell

| builder = Gateshead Works

| ordernumber =

| serialnumber =

| buildmodel =

| builddate = 1899–1909

| totalproduction = 40

| rebuilder =

| rebuilddate =

| numberrebuilt =

| whytetype = 4-6-0

| uicclass = 2′C n2, later 2′C h2

| driver =

| gauge =

| leadingdiameter = {{convert|3|ft|7+1/4|in|m|3|abbr=on}}

| coupleddiameter = {{convert|6|ft|1+1/4|in|m|3|abbr=on}}

| tenderdiameter =

| minimumcurve =

| wheelbase = {{convert|50|ft|8+1/4|in|m|3|abbr=on}}

| engine total = {{convert|26|ft|0+1/2|in|m|3|abbr=on}}

| leading =

| coupled =

| trailing =

| tender total = {{convert|12|ft|8|in|m|3|abbr=on}}

| tenderbogie =

| wheelspacing =

| length = {{convert|61|ft|0+3/4|in|abbr=on}}{{sfn|Boddy|Brown|Fry|Hennigan|1975|p=68}}

| over couplers =

| over bufferbeams=

| width =

| height =

| frametype =

| axleload = {{convert|19.70|LT|abbr=on}}

| leadingbogie/pony=

| coupled all =

| coupled 1 =

| coupled 2 =

| coupled 3 =

| tenderbogieload =

| tenderaxle =

| weightondrivers = {{convert|48.10|LT|abbr=on}}

| locoweight = {{convert|64.30|LT|abbr=on}}

| tenderweight = {{convert|43.50|LT|abbr=on}}

| locotenderweight = {{convert|107.80|LT|abbr=on}}

| tendertype =

| fueltype =

| fuelcap = {{convert|5.00|LT|abbr=on}}

| watercap = {{convert|3940|impgal|abbr=on}}

| tendercap =

| sandcap =

| fireboxtype =

| firearea = {{convert|23|sqft|abbr=on}}

| boiler = LNER diagram 54

| boilertype =

| pitch =

| diameterinside =

| lengthinside =

| smalltubediameter=

| largetubediameter=

| boilerpressure = {{convert|160|psi|MPa|abbr=on}}

| safetyvalvetype =

| feedwaterheater =

| totalsurface = {{convert|1659|sqft|abbr=on}}

| tubearea = {{convert|884|sqft|abbr=on}}

| fluearea = {{convert|379|sqft|abbr=on}}

| tubesandflues =

| fireboxarea = {{convert|120|sqft|abbr=on}}

| superheatertype = Schmidt

| superheaterarea = {{convert|276|sqft|abbr=on}}

| cylindercount = Two, outside

| cylindersize = {{convert|20|x|26|in|mm|0|abbr=on}}

| valvegear = Stephenson

| valvetype = {{convert|8+3/4|in|mm|0|adj=on}} piston valves (first 8 built with sides valves, but altered 1901–21)

| valvetravel =

| valvelap =

| valvelead =

| transmission =

| trainheating =

| locobrakes =

| locobrakeforce =

| trainbrakes =

| safety =

| coupling =

| maxspeed =

| poweroutput =

| tractiveeffort = {{convert|19309|lbf|kN|2|abbr=on}}

| factorofadhesion =

| operator = {{ubl|North Eastern Railway|London & North Eastern Railway}}

| operatorclass =

| powerclass =

| numinclass =

| fleetnumbers =

| officialname =

| nicknames =

| axleloadclass =

| locale =

| deliverydate =

| firstrundate =

| lastrundate =

| retiredate =

| withdrawndate = 1928–1938

| preservedunits =

| restoredate =

| scrapdate =

| currentowner =

| disposition = All scrapped

| notes =

}}

The North Eastern Railway Class S (LNER Class B13) was a 4-6-0 type of steam locomotive designed for express passenger workings. The first example was built in 1899. They were very similar to the NER Class S1, except for the smaller wheels of the former.