Royal Scots Dragoon Guards
Cruiser Mark IV
| GENERAL DATA | |||
| Formal Designation | Cruiser Tank Mark IVA | ||
| Manufacturer(s) | Nuffield, LMS | ||
| Production Quantity | 172 | Production Period | 1939-1941 |
| Type | Cruiser/Medium Tank | Crew | 4 |
| Length hull/overall (m) | 6.02 | Barrel Overhang (m) | 0 |
| Width (m) | 2.54 | Height (m) | 2.59 |
| Combat Weight (kg) | 15000 | Radio Equipment | n.a. |
| FIREPOWER | |||
| Primary Armament | 40mm 2-pounder | Ammunition Carried | 87 |
| Traverse (degrees) | Hydraulic (360°) | Elevation (degrees) | -15° to +20° |
| Traverse speed (360°) | n.a. | Sight | n.a. |
| Secondary Armament | 1 x 7.92 Besa MG (coaxial) | Ammunition Carried | 3750 |
| MOBILITY CHARACTERISTICS | |||
| Engine Make & Model | Nuffield Liberty Mk. I & II | Track Links | 119/track |
| Type & Displacement | V12, 27.3 liters | Track Width | 24.6 cm |
| Horsepower (max.) | 340hp@1500rpm | Track Ground Contact | 350.5 cm |
| Power/Weight Ratio | 22.7 hp/t | Ground Pressure | 12.3 psi |
| Gearbox | 4 forward, 1 reverse | Ground Clearance (m) | 0.41 |
| Fuel | Gasoline (Petrol) | Turning Radius (m) | Skid. |
| Range on/off road (km) | 169 | Gradient (degrees) | n.a. |
| Mileage (liters/100km) | 296 | Vertical Obstacle (m) | 0.76 |
| Fuel Capacity (liters) | 500 | Fording (m) | 0.91 |
| Speed on/off road | 48/23 km/h | Trench Crossing (m) | 2.29 |
| ARMOR PROTECTION | ||||
| Armor Detail | Front | Side | Rear | Top/Bottom |
| Hull | 14mm@30° | 14mm@90° | n.a. | 6mm@0° |
| 30mm@90°(nose) | ||||
| Superstructure | 14mm@30°(glacis) | - | 14mm@90°(upper) | 14mm@0° |
| 14mm@90°(driver) | ||||
| Turret | 30mm@79°&83° | 14mm@52°&74° | 14mm@52°&74° | 14mm@0°&80° |
| Mantlet | - | - | - | |
| The Cruiser Mk IV was the most important British
tank (numerically) of the early war years. It adopted, as well as that of
its predecessor Cruiser Mk III, the Christie suspension
which improved the poor off-road performance of the early Cruiser
marks. Both Mk III and Mk IV were not a success as their armour was too light and the 2-pounder main gun inadequate. Production ceased in 1941 after 65 Mk III and 655 Mk IV had been delivered |