Chieftain MK3/MK5

Operator: Iran
Status: In Service
Number: 100 (Originally 707)
Cost:
Acquired: 1971-1975
General Specs
Country of origin: UK
Manufacturer: Leyland Motors
Introduced: 1967
Combat Weight: 55 tons
Length: 24.6 ft (7.5 m)
Width: 11.5 ft (3.5 m)
Height: 9.5 ft (2.9 m)
Range: 310.7 miles (500 km)
Engine: Leyland L60 2-stroke 6-cylinder multi-fuel engine (750 hp)
Track:
Road Speed: 29.8 mph (48 km/h)
Offroad Speed: 18.6 mph (30 km/h)
Loader: Manual
Crew: 4
Armor
NBC Protection Yes
Nightvision Barr and Stround Thermal Observation Gunnery Sight (TOGS)
Laser detection TLS
Armament:
Main Armament 120mm rifled gun L11A5 (64 rounds)
Ammunition APFSDS, APDS, HESH, SMOKE
Secondary Armament 1 or 2 x 7.62mm L8A1 (6,000 rounds)
1 x .50 cal. MG (300 rounds)
Radar/Sensors: Pilkington Optronics laser rangefinder
Countermeasures/Defenses:
Misc Systems: SNORKEL system