Sleeper Composite

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British Rail Sleeper Composite
A composite SLC sleeping car in the LNWR carriage sheds at Crewe in the mid-1970s
A composite SLC sleeping car in the LNWR carriage sheds at Crewe in the mid-1970s

In service 1957-
Manufacturer BR Wolverton & Metro Cammell
Operator British Rail
Specifications
Car length 19.67 m (64 ft 6 in)
Width 2.83 m (9 ft 3 in)
Height 3.85 m (12 ft 8 in)
Maximum speed 161 km/h (100 mph)
Weight 40 tons

A Composite Sleeper or SLC, is a type of railway sleeping carriage with fixed bunks used by British Railways between the late 1950s and early 1980s.

Built in 1957 the BR Mark 1 composite SLC sleeping cars had 11 compartments with a side corridor, two toilets at one end and an attendant's pantry at the other. The second class compartments had two bunks, the upper one folded down when required, and the first class compartment had a single bunk.

They were built on the standard Mk1 coach 63' underframe and weighed approximately 40 tonnes.

BR didn't include any sleeping cars in its Mark 2 coach fleet hence these vehicles lasted well over 20 years until they were superseded by the Mark 3 sleepers after 1979.