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  • GIAT GCT (Grande Cadence de Tir) 155mm Self-Propelled Gun

    The GCT 155mm Self-Propelled Gun platform currently serves the armies of France and Saudi Arabia.

     Updated: 7/13/2014; Authored By Staff Writer; Content ¬©www.MilitaryFactory.com

    The GIAT GCT is the primary tracked, self-propelled gun platform of the modern French Army. The system is akin to the American M109 Paladin, the British AS-90 and the Russian 2S19 in both form and function, featuring a high-profile hull superstructure mounting a potent 155mm main gun and a tracked hull design. The configuration is proven and emerged from experiences of World War 2 armored warfare. The GCT has since been produced in the hundreds and forms the long arm of the Saudi Army while dozens of examples were shipped to Iraq prior to the 2003 coalition invasion. Modernization has kept this 1970s'era system viable on the modern battlefield for French forces.

    In 1962, the French Army adopted the 155mm Mk F3 self-propelled gun to manage its long-range hitting power. The system underwent design as early as 1952 and entered production a decade later, realizing approximately 600 units before manufacture ceased in 1997. The 17-ton system fielded a 155mm main gun and was powered by a SOFAM 8Gxb 8-cylinder gasoline fueled engine while being crewed by four personnel (of which only two could actually be carried on the vehicle proper). Despite production ongoing into the 1980s, the French Army sought its replacement and looked to a fully-functional, enclosed track-and-wheel system mounting a 155mm main gun in a traversing turret. Development, therefore, began in 1969 on a such a system with GIAT (now Nexter) granted production of the new vehicle.

    The new vehicle was adopted into French Army service as the "GCT" ("Grande Cadence de Tir"), built upon the existing chassis of the AMX-30 Main Battle Tank (MBT). An all-new boxy turret enclosure was developed housing the breech of the 155mm main gun which allowed for engagement at all angles. The weapon was given an automatic loader (though manual was still possible) which allowed for a rate-of-fire of eight rounds per minute with ranges out to 23,500 meters depending on projectile used (rocket-assist allowed for engagement ranges of up to 28,000 meters). Armor protection was 20mm at its thickest and defense was provided by 1 x 7.62mm or 12.7mm machine gun to counter light armored vehicles and low-lying threats. The vehicle was crewed by four personnel made up of the driver, commander, gunner and ammunition handler. Unlike the Mk F3 before it, the GCT now housed all of the vehicle crew in relative safety and, furthermore, the entire crew was protected from Nuclear, Biological and Chemical (NBC) threats. Four smoke grenade dischargers are fitted in pairs at the extreme lower corners of the turret front.

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    GIAT GCT (Grande Cadence de Tir) Technical Specifications

    Service Year: 1977
    Type: 155mm Self-Propelled Gun
    National Origin: France
    Manufacturer(s): Nexter (GIAT Industries) - France
    Production: 400

    Design (Crew Space, Dimensions, Weight, and Systems)

    Operating Crew: 4
    Length: 33.63 feet (10.25 meters)
    Width: 10.33 feet (3.15 meters)
    Height: 10.66 feet (3.25 meters)

    Operating Weight: 46 tons (42,000 kg; 92,594 lb)

    Nuclear / Biological / Chemical Protection: Yes
    Nightvision Equipment: Yes - Driver Only

    Installed Power and Standard Road Performance

    Engine(s): 1 x Hispano-Suiza HS 110 12-cylinder, water-cooled, supercharged multi-fuel engine developing 720 horsepower @ 2,000rpm.

    Maximum Road Speed: 37 mph (60 km/h)
    Maximum Road Range: 280 miles (450 km)

    Armament and Ammunition

    1 x 155 mm main gun
    1 x 7.62 mm machine gun or 12.7 mm machine gun
    4 x smoke dischargers

    42 x 155mm projectiles (HE, SMOKE, Mine Dispensing).
    2,050 x 7.62mm ammunition
    800 x 12.7mm ammunition
    4 x Smoke Grenades

    Global Operators / Customers

    France; Iraq; Saudi Arabia

    Model Variants

    AMX-30 GCT - Formal Model Designation

    AUF 1 - Initial Production Models

    AUF 2 - Modernized and improved variant; totaling 70 examples; new autoloader for improved reliability, accuracy and rate-of-fire; manufactured on AMX-30B2 MBT chassis.