British Rail Class 22

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North British Type 2 diesel-hydraulic
British Rail Class 22
D6343, d7072 - old oak common - 1965.jpg
D6343 with Hymek D7072 at Old Oak Common, 1965.
Type and origin
Power type Diesel-hydraulic
Builder North British Locomotive Company
Build date 1959–1962
Total produced 58
 • Whyte B-B
 • UIC B'B'
Gauge 4 ft 8 12 in (1,435 mm) standard gauge
Wheel diameter 3 ft 7 in (1.092 m)
Wheelbase 31 ft 6 in (9.60 m)
Length 46 ft 8 12 in (14.237 m)
Width 8 ft 8 in (2.64 m)
Height 12 ft 10 in (3.91 m)
Loco weight D6300–D6305: 68 long tons (69.1 t)
D6306–D6357: 65 long tons (66.0 t)
Fuel capacity 450 imp gal (2,000 l; 540 US gal)
Prime mover MAN L12V18/21A or 21B
Transmission Hydraulic: Voith LT306r
MU working D6300–D6305: Orange square
D6306–D6357: White diamond
Train heating 1,000 pounds (450 kg) per hour steam generator
Train brakes Vacuum
Performance figures
Top speed 75 mph (121 km/h)
Power output Engine: 1,000 hp (746 kW) or 1,100 hp (820 kW)
Tractive effort Maximum: 40,000 lbf (177.9 kN)
Railroad(s) British Railways
Number D6300–D6357
Nicknames Baby Warship
Axle load class GWR: Yellow
BR: Route availability 4
Retired 1967–1972
Disposition All scrapped

The British Rail Class 22, originally called the North British Type 2 diesel-hydraulic, was a class of diesel-hydraulic locomotives designed for the Western Region of British Railways and built by North British Locomotive Company. They were very similar in appearance to the Class 21 diesel-electrics. The Class 22 was nicknamed "Baby Warship" because of its similarity to the British Rail Class D20/2.

Category:Locomotives by builder