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File:British_Mark_I_male_tank_Somme_25_September_1916.jpg · Wikimedia Commons · See Wikimedia Commons

EntityQ1284532· pop 38

Mark I

Also known as British heavy tanks of World War I

Erster kampffähiger Panzer

Type: Heavy tank
Place of origin: United Kingdom
In service: (Mk I) from 1916
Used by: United Kingdom (Mk I–IX) Germany (Mk IV) Japan (Mk IV) Russia ( White movement ) (Mk V) Soviet Union (Mk V) United States (Mk V, V*, VIII) France (Mk V*) Canada (Mk V, V*)
Wars: First World War Russian Civil War German Revolution of 1918–19
Designer: William Tritton Major Walter Gordon Wilson
Manufacturer: (Mk I) William Foster & Co. of Lincoln Metropolitan Carriage , Birmingham
Produced: (Mk I) 1916
Variants: Mark II, Mark III, Mark IV , Mark V , Mark V*, Mark V**, Mark VI , Mark VII, Mark VIII , Mark IX , Mark X, Gun Carrier Mark I
Mass: Male: 28 long tons (28 t) Female: 27 long tons (27 t)
Length: 32 ft 6 in (9.91 m) with tail 25 ft 5 in (7.75 m) without
Width: 13 ft 9 in (4.19 m) [male] 14 ft 4 + 1 ⁄ 2 in (4.38 m) [female]
Height: 8 ft 2 in (2.49 m)
Crew: 8 (commander/brakesman, driver, two gearsmen and four gunners)
Armour: 0.24–0.47 in (6–12 mm)
Main armament: Male: Two Hotchkiss 6 pdr QF Female: Four .303 in Vickers machine guns
Secondary armament: Male: Three .303 in Hotchkiss machine guns Female: One .303 in Hotchkiss machine gun
Engine: Daimler-Knight 6-cylinder sleeve-valve 16-litre petrol engine, 105 horsepower (78 kW)