British Rail Class 43 (Warship Class)

The British Rail Class 43 diesel-hydraulic locomotives were built by the North British Locomotive Company (NBL) from 1960 to 1962.

British Rail Class 43
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D848 Sultan
Power type	Diesel-hydraulic
Builder	North British Locomotive Co.
Serial number	27962–27994
Build date	1960–1962
Total production	33
UIC classification	B'B'
Gauge
Wheel diameter	3 ft 3+1⁄2 in (1.003 m) new
Minimum curve	4.5 chains (91 m)
Wheelbase	bogie 10 feet 6 inches (3.20 m) bogie center distance 37 ft 9 in (11.51 m) total 48 ft 3 in (14.71 m)
Length	60 ft 0 in (18.29 m)
Width	8 ft 10 in (2.69 m)
Height	12 ft 9+1⁄2 in (3.90 m)
Locomotive weight	79.50 long tons (80.78 t; 89.04 short tons)
Fuel capacity	800 imp gal (3,600 L; 960 US gal)
Prime mover	MAN L12V 18/21, 2 per locomotive
Engine type	V12 four stroke diesel
Cylinders	12
Cylinder size	180 mm × 210 mm (7.087 in × 8.268 in) (bore x stroke)
Transmission	Hydraulic, Voith/NBL LT.306r
Multiple working	◆ White Diamond
Power output	Engines: 1,100 bhp (820 kW) × 2
Tractive effort	Maximum: 49,030 lbf (218 kN)
Train heating	Steam, 940 imp gal (4,300 L; 1,130 US gal) capacity
Locomotive brakes	Vacuum controlled air, hand brake
Train brakes	Vacuum
Nicknames	"Warship"
Axle load class	Route availability 7 (RA 6 from 1969)
Retired	1969–1971
Disposition	All scrapped

British Rail Class 43 (Warship Class) Media

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  D861 'Vigilant' at Tilehurst in 1962

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  D836 'Powerful' hauling a Paddington-Bristol express in 1962

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  North British Type 4 (Class 43) or "Warship" Class 2,200 hp B-B No.D853 "Thruster" in BR Rail Blue livery with all yellow front end passing Didcot on the Oxford line, heading towards Paddington, 09/70. Scanned photograph taken with a Kowa SET.