 | This article includes a list of general references, but it lacks sufficient corresponding inline citations. (July 2014) |
| Medium Tank Mark B | |
|---|---|
 Medium Tank Mark B. The machine guns are missing from their mounts in the superstructure and in the projecting doors on the sides | |
| Type | Medium tank |
| Place of origin | United Kingdom |
| Service history | |
| Used by | United Kingdom Russian State Soviet Union |
| Wars | Russian Civil War Anglo-Irish War |
| Production history | |
| No. built | 102[1] |
| Specifications | |
| Mass | 18 tons[2] |
| Length | 22 ft 9 in (6.9 m) |
| Width | 8 ft 10 in (2.7 m) |
| Height | 8 ft 6 in (2.6 m) |
| Crew | 4:[2] commander, driver, mechanic, machine gunner |
| Armour | 14 mm-6 mm [2] |
Main armament | 4 x .303 in (7.7 mm) Hotchkiss machine guns[2] to be placed in seven possible ball-mounts |
Secondary armament | - |
| Engine | Ricardo 4-cylinder petrol 100 hp (75 kW) |
| Power/weight | 5.6 hp/tonne |
| Suspension | unsprung |
Operational range | 105 km or 65 miles [2] |
| Maximum speed | 6 mph (10 km/h) |
The Medium Mark B was a British medium tank of the First World War developed as a successor to the Whippet, but ultimately unsatisfactory and production was cancelled at the end of the war.