Sudan Railways 250 class

{{one source|date=December 2014}}

{{Infobox locomotive

| name = Sudan Railways 250
Rhodesia Railways 17th class

| powertype = Steam

| image =

| alt =

| caption =

| designer =

| builder = Beyer, Peacock & Company

| ordernumber = 1186, 1193

| serialnumber = 6798–6801, 6870–6875

| buildmodel =

| builddate = 1936–1937

| totalproduction = 10

| whytetype = 4-6-4+4-6-4

| uicclass = 2′C2′+2′C2′ h4

| gauge = {{nowrap|{{Track gauge|Cape|allk=on}}}}

| leadingdiameter =

| driverdiameter = {{convert|57|in|mm|0|abbr=on}}

| trailingdiameter =

| minimumcurve =

| wheelbase =

| length = {{convert|89|ft|11|in|m|2|abbr=on}}

| width =

| height =

| axleload = {{long ton|12|10}}

| weightondrivers = {{long ton|75|12}}

| locoweight = {{long ton|168|16}}

| tenderweight =

| locotenderweight =

| tendertype =

| fueltype =

| fuelcap =

| watercap =

| tendercap =

| sandcap =

| boiler =

| boilerpressure = {{convert|200|psi|MPa|2|abbr=on}}

| feedwaterheater =

| firearea = {{convert|43|sqft|m2|0|abbr=on}}

| tubearea =

| fluearea =

| tubesandflues = {{convert|1776|sqft|m2|0|abbr=on}}

| fireboxarea = {{convert|190|sqft|m2|1|abbr=on}}

| totalsurface =

| superheatertype =

| superheaterarea = {{convert|440.2|sqft|m2|1|abbr=on}}

| cylindercount = Four

| cylindersize = {{convert|16.75|x|26|in|mm|0|abbr=on}}

| valvegear =

| valvetype =

| valvetravel =

| valvelap =

| valvelead =

| transmission =

| maxspeed =

| poweroutput =

| tractiveeffort = {{convert|43510|lbf|kN|abbr=on}}

| factorofadhesion =

| trainheating =

| locobrakes =

| locobrakeforce =

| trainbrakes = Vacuum

| safety =

| operator = Sudan Railways
Rhodesia Railways
Caminhos de Ferro de Moçambique

| operatorclass = SR: 250
RR: 17th
CFM:

| powerclass =

| numinclass =

| fleetnumbers = SR: 250–259
RR: 271–280
CFM: 921–930

| officialname =

| nicknames =

| axleloadclass =

| locale =

| deliverydate =

| firstrundate =

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| retiredate =

| withdrawndate =

| preservedunits =

| restoredate =

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| currentowner =

| disposition = All scrapped}}

The Sudan Railways 250 class was a class of ten 4-6-4+4-6-4 Garratt locomotives. It was one of only two classes of "Double Baltic" Garratts. – the other class being the Rhodesia Railways 15th class.

The ten locomotives were built in two batches by Beyer, Peacock & Company in 1936–1937. They were the only class of Garratts on the Sudan Railways and were numbered 250–259. They were used on Port Sudan to Atbara and Atbara to Wad Madani routes, until they were made redundant by diesel locomotives.

In 1949, they were sold to the Rhodesia Railways where they were numbered 271 to 280 and classified as 17th class. On the RR they were used alongside the 15th and 15A classes.

In 1964 all ten locomotive were sold to the Caminhos de Ferro de Moçambique who numbered them 921 to 930. They were then used on the Beira Railroad from the port city of Beira to the Rhodesian (now Zimbabwean) border at Umtali (now Mutare).

They were still in use into the 1980s, but post-civil war, their fate is unclear; they are presumed all scrapped.