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SBB C 5 6 Dampflok Drehscheibe Steam.jpg
Swiss steam Elephant SBB C 5/6 on the turntable at Winterthur
Type and origin
Power type Steam
Builder SLM Winterthur
Build date 1913–1917
Total produced 28
 • Whyte 2-10-0
 • UIC 1′E h4v
Gauge 1,435 mm (4 ft 8 12 in)
Driver dia. 1,330 mm (52.4 in)
Length 19,195 mm (63 ft 0 in)
Height 4,480 mm (14 ft 8 in)
Axle load 15.8 t (15.6 long tons; 17.4 short tons)
Adhesive weight 79 t (77.8 long tons; 87.1 short tons)
Total weight 128 t (126.0 long tons; 141.1 short tons)
 • Firegrate area
4 m2 (43 sq ft)
Boiler pressure 15 bar (1,500 kPa; 220 psi)
Performance figures
Maximum speed 65 km/h (40 mph)
Power output 1,190 kW (1,600 hp)
Operators SBB-CFF-FFS
Numbers 2951–2978
Nicknames Elephant
Withdrawn Up to 1968
Preserved 4 (1 in working order)

The C 5/6 were a class of steam locomotives in use for the Swiss Federal Railways. 28 of them were built between 1913 and 1917; all had been withdrawn by 1968. Four have been preserved, one of them in working order. The class was designed for use on the steep inclines of the Gotthard route, and was considered extremely efficient, earning the nickname Elephant. Its design was based on the successful C 4/5 locomotive, and the result is the largest steam locomotive operated by the Swiss Federal Railways. Within a few years of introduction, however, they began to be replaced by new electric locomotives.


Number 2978, built in 1917, was the last steam locomotive built for Swiss Federal Railways, and is now part of the company's heritage fleet. In 1960, number 2978 was fitted with the boiler of number 2956. Number 2969, built in 1915, is being restored by Eurovapor in Sulgen.[1] They also have the number 2958 for spare parts (which was earlier in Olten) and will preserve it as an exhibit. Number 2965, not in working order, is an exhibit in the Swiss Transport Museum in Lucerne.

See also[edit]


  1. ^ "Dampflok C 5/6 2969 (in Aufarbeitung)" (in German). Eurovapor Lokremise Sulgen. Retrieved 23 February 2011. 

External links[edit]