NS 1900
Type and origin
Power typeSteam
BuilderWerkspoor
Build date1907-1913
Total produced40
Specifications
Configuration:
​
 • Whyte4-4-0
 • UIC2'B
Leading dia.991 mm (3 ft 3.0 in)
Driver dia.2,016 mm (6 ft 7.4 in)
Tender wheels1,105 mm (3 ft 7.5 in)
Length:
​
 • Over beams16,978 mm (55 ft 8.4 in)
1913-1914: 16,951 mm (55 ft 7.4 in)
Height4,365 mm (14 ft 3.9 in)
Loco weight52.2 t (57.5 short tons; 51.4 long tons)
Tender weight39.2 t (43.2 short tons; 38.6 long tons)
Fuel typeCoal
Fuel capacity4 t (4.4 short tons; 3.9 long tons)
Water cap.17 m3 (3,700 imp gal)
Firebox:​
 • Grate area2.04 m2 (22.0 sq ft)
Boiler pressure10.5 bar (152 psi) superheated
Heating surface:​
 • Tubes71 m2 (760 sq ft)
 • Firebox10 m2 (110 sq ft)
Superheater:
​
 • Heating area23 m2 (250 sq ft)
Cylinders2
Cylinder size500 mm × 660 mm (20 in × 26 in)
Valve gearStephenson
Performance figures
Maximum speed100 km/h (62 mph)
Tractive effort59.23 kN (13,320 lbf)
Career
OperatorsSS, NS
Power classHSM: PV1, NS: PO1
NumbersHSM: 421-460,
NS: 1901-1940
Withdrawn1946-1948
DispositionAll scrapped

The NS 1900 was a series of express train steam locomotives of the Dutch Railways (NS) and its predecessor Hollandsche IJzeren Spoorweg-Maatschappij (HSM).[1]

After the first tank locomotives 771-772 (NS 5700) with superheater, the HSM ordered other locomotives with a superheater. Like the 771–772, these were built by Werkspoor in 1907. The HSM gave them numbers 421–425. In a way, these locomotives can be regarded as a further development of the 350-408 (NS 1600) with a superheater. After good experiences, including a coal saving of 15 to 17%, another order was places for a further 34 locomotives which were between 1908 and 1913.[2]

When the locomotives and rolling stock fleets of the HSM and the Maatschappij tot Exploitatie van Staatsspoorwegen was merged in 1921, the locomotives of this series were given the NS numbers 1901–1940. During the Second World War, a number of locomotives were taken eastward, No's 1908, 1934, 1935 and 1937 never returned and were reported missing. The rest were disposed of between 1946 and 1948. No locomotive has been preserved.

Lot no. Built HSM numbers NS numbers Withdrawn notes
183-187 1907 421-425 1901-1905 1946-1948
227-229 1908 426-428 1906-1908 1946-1948 NS 1906 Missing after world war II
230-233 1909 429-432 1909-1912 1946-1948
238-244 1909 433-439 1913-1919 1946-1947
245-247 1910 440-442 1920-1922 1946
266-270 1911 443-447 1923-1927 1946-1947
289-295 1912 448-454 1928-1934 1946-1948 NS 1934 Missing after world war II
322-327 1913 455-460 1935-1940 1946-1947 NS 1935 and 1937 Missing after world war II
NS 1902 - HSM 422 (ca. 1910)

Sources and references

  1. ↑ NVBS: Op de Rails. J.J.K.: Iets over de geschiedenis van het materieel van de Nederlandsche Spoorwegen. 7-1940.
  2. ↑ Waldorp, H. (1986). Onze Nederlandse stoomlocomotieven in woord en beeld (7e, gew. dr ed.). Almaar: De Alk. ISBN 90-6013-947-X. OCLC 63833327.
  • R.C. Statius Muller, A.J. Veenendaal jr., H. Waldorp: De Nederlandse stoomlocomotieven. Uitg. De Alk, Alkmaar, 2005. ISBN 90-6013-262-9.
  • J. van der Meer: De Hollandsche IJzeren Spoorweg-Maatschappij. Uitg. Uquilair, 2009, ISBN 978-90-71513-68-8.
  • J.J. Karskens: De Locomotieven van de Hollandsche IJzeren Spoorweg Maatschappij. Uitg. J.H. Gottmer, Haarlem - Antwerpen, 1947.
  • M.A. Asselberghs: Nederlands Spoorwegmuseum. Een wandeling langs de verzameling. Uitg. Nederlands Spoorwegmuseum, Utrecht, 1987.
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