| Year | 1939 |
| Vehicle Type | Medium Tank |
| Origin & Designer | Britain/Nuffield |
| Numbers Produced | 99 |
| Crew | 4 (Commander, Gunner, Loader & Driver) |
| Main Armament | 1 x OQF 2 pdr L/52 Mk. I Gun |
| Main Armament | [@sponson_traverse] |
| Elevation | -15° to +20° |
| Turret Traverse | 360° (Powered) |
| Gun Traverse | [@gun_traverse] |
| Gun Mount | [@gun_mounts] |
| Maximum Range | [@maximum_range] |
| Armour Penetration | [@armour_penetration] |
| Gun Sight | No. 33 Mk. II S |
| Secondary Armament | 1 x .303in Vickers Machine Gun (Coaxial) |
| Smoke Discharger | [@smoke_discharger] |
| Ammunition Carried | 87 x 40mm + 3.750 x .303in Rounds |
| Height | 2.59m |
| Width | 2.54m |
| Length | 6.02m |
| Combat Weight | 15.000 kg |
| Ground Clearance | 0.41m |
| Fording Depth | 0.91m |
| Trench Crossing | 2.29m |
| Obstacle Clearance | 0.76m |
| Climbing Ability | 30° |
| Radio | No. 19 Set |
| Armour | Hull Front: 30mm. Hull Sides: 14mm. Hull Rear: 14mm. Hull Top: 6mm. Hull Bottom: 6mm. Gun Mantlet: 30mm. Turret Front: 30mm. Turret Sides: 14mm. Turret Rear: 14mm. Turret Top: 14mm. |
| Engine | Nuffield Liberty Mk I (Petrol) |
| Transmission | 4 Forward & 1 Reverse |
| Maximum Road Range | 140 km |
| Maximum Cross Country Range | [@maximum_cross_country_range] |
| Maximum Water Range | [@maximum_water_range] |
| Maximum Road Speed | 48 kph |
| Maximum Cross Country Speed | 22 kph |
| Maximum Water Speed | [@maximum_water_speed] |
| Variants | Mk IVA replaced the Vickers MMG with a 7.92mm Besa MMG. Close Support Version with one 3.7in L/15 Mk.IV Howitzer (40 x 3.7in Rounds). |
| Notes | The Mk. IV A13 was based on the same design as the Mk. III A13. The Mk. IV had thicker armour and replaced the aging Vickers .303 machine gun with the new Besa 7.92mm. In the main a slightly better tank than the earlier cruisers and could hold its own against the lighter Italian and early German tanks. It served in France and North Africa. |