Cruiser Mk III

Cruiser Mk III
Tank, Cruiser, Mk III (A13)
IWM-KID-358-Cruiser-MkIII.jpg
Type Cruiser tank
Place of origin  United Kingdom
Service history
In service 1938-1941
Used by British Army
Wars Second World War
Production history
Manufacturer Nuffield Mechanisation and Aero Ltd
Produced 1937-1939
Number built 65
Specifications
Weight 14 Long tons (14.2 tonnes)
Length 6 m (240 in)[1]
Width 2.5 m (98 in)
Height 2.6 m (100 in)
Crew 4 (commander, gunner, loader, driver)

Armour 6 - 14 mm
Main
armament
QF 2-pounder gun
87 rounds
Secondary
armament
.303 Vickers machine gun
3,750 rounds
Engine Nuffield Liberty V12 petrol
340 hp (250 kW; 340 PS)
Suspension Christie
Operational
range
90 mi (140 km)
Speed 30 mph (48 km/h)

The Tank, Cruiser, Mk III (A13) was a British cruiser tank of the Second World War. It was the first British cruiser tank to use the Christie suspension system which gave higher speeds and better cross-country performance, previous models of cruiser tanks having used triple wheeled bogie suspension.

Contents

Design and development

Orders for the Mk I and Mk II Cruiser tanks were restricted, since the British Army had decided to produce a more advanced and faster cruiser tank which would incorporate the Christie suspension designed by American inventor J. Walter Christie and have better armour. In 1936, General Martel, a pioneer in tank design who had published works on armoured warfare and pioneered the lightly armoured "tankette" to enhance infantry mobility, became Assistant Director of Mechanization at the War Office. Later that year Martel witnessed demonstrations of Soviet tank designs including the BT tank, which had been influenced by Christie's work.[2] He urged the adoption of a tank that would use the suspension system and also follow Christie's practice of using a lightweight aircraft engine such as the Liberty Engine. The government authorized purchase and licensing of a Christie design via the Nuffield Organization rather than contact the Soviet authorities.[3][4]

The vehicle obtained from Christie became the basis of the Cruiser Mk III (A13). It had to be extensively redesigned as it was too small. A new company Nuffield Mechanisations Ltd was formed for the development and production of the design. At a meeting of the General Staff, an official specification was determined. This included 30mm armour, a 2 pdr gun, road speed of 30 mph. A subsequent review of the specification by Martel and Hobart approved 30mm armour all round provided cross-country speed could be kept at 25 mph. Pending the delivery of the A13, an interim design was approved - of the A7, A9 and A10, the A9 was selected.[5]

The first prototype (the A13-E1) was delivered in 1937. Following testing of the two prototypes, the A13 was ordered into production and a total of 65 were manufactured. The Mk III weighed 14 long tons (14,200 kg) had a crew of 4, a 340 hp engine which gave a top speed of 30 mph (48 km/h) and was armed with a 2 pounder gun and a machine gun. However, when it was introduced into service in 1937, the Army still lacked a formal tank division.[6]

Sixty five were built, the original order being for 50. The order was completed by mid 1939.[4]

Combat history

Like most British cruisers, the A 13 was fast but under-armoured and proved unreliable mechanically.[by whom?] Most were lost in the French campaign in 1940, but a few were used in Greece and the North African campaign in 1940-41. The basic design was used for the Cruiser Mk IV.

As part of the British Expeditionary Force sent to France, the Cruiser Mark II equipped units in the 1st Armoured Division.

In the Western Desert 1940-1941 (Libya) they were in the units of the 7th Armoured Division.

See also

Notes

  1. ^ http://www.wwiivehicles.com/unitedkingdom/cruiser/mk-iii-a13.asp
  2. ^ Milson
  3. ^ Milsom p5
  4. ^ a b Tucker, Spencer (2004). Tanks: An Illustrated History of Their Impact. ABC-CLIO. pp. 49–51. ISBN 1576079953. 
  5. ^ Milsom
  6. ^ Steele, Brett D. (2005). Military Reengineering Between the World Wars. RAND. p. 14. ISBN 0833037218. 

References

  • Milson et al., Classic Armoured Fighting Vehicles Their History and How to Model Them Crusader 1976 Patrick Stephens

External links

British armoured fighting vehicle production during World War II

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