Question: Twelve FCM F1's were ordered in 1940 to replace a tank that was, in physical dimensions the largest what?

full_context: Document 1: ARL tracteur C: The "ARL tracteur C", or ARL Char C, was a French super-heavy tank developed during the late Interbellum by the "Atelier de Construction de Rueil" (ARL) company. A full-scale wooden mockup was halfly produced, but the project was terminated in favor of FCM F1, a directly competing design, which proved to be superior design. The vehicle was meant to be extremely heavy and for that time period, very heavily armored. ARL C was intended to be very long to fill up the requirement of having a long tank that could cross trenches up to 7 meters wide. The tank was multi-turretted like FCM F1; however, unlike FCM F1, ARL C had the main turret in front of the very long hull right behind the secondary turret, not in the back of vehicle. The development path of the ARL C was extremely complex, due to the existence of a number of parallel super-heavy tank projects with overlapping design goals, the specifications of which were regularly changed. For each project in turn several companies submitted one or more competing proposals.
Document 2: Leopard 2: The Leopard 2 is a main battle tank developed by Krauss-Maffei in the 1970s for the West German Army. The tank first entered service in 1979 and succeeded the earlier Leopard 1 as the main battle tank of the German Army. Various versions have served in the armed forces of Germany and 12 other European countries, as well as several non-European nations, including Canada (Leopard 2A4m can), Chile, Indonesia, Singapore and Turkey. The Leopard 2 was used in Kosovo with the German Army and has also seen action in Afghanistan with the Danish and Canadian contributions to the International Security Assistance Force, as well as seeing action in Syria with the Turkish Armed Forces against IS and the YPJ.
Document 3: Char 2C: The Char 2C, also known as the FCM 2C, is a French heavy tank, later also seen as a super-heavy tank, developed during World War I but not deployed until after the war. It was, in physical dimensions, the largest operational tank ever made.
Document 4: Mitsubishi F-1: The Mitsubishi F-1 is Japan's first post-World War II domestically developed and built supersonic military jet, to enter production in Japan since the end of World War II, thus it was nicknamed "Supersonic Rei-Sen". Mitsubishi Heavy Industries and Fuji Heavy Industries jointly developed the F-1. At first glance, it resembles the French/Anglo SEPECAT Jaguar, but was a completely independent Japanese effort (although it uses the same engines). Its primary role is anti-ship attack, secondary role is ground attack, and it has limited air-to-air capabilities (short-range AIM-9 Sidewinder for self-defense).
Document 5: Panzer IV: The "Panzerkampfwagen" IV (PzKpfw IV), commonly known as the Panzer IV, was a German medium tank developed in the late 1930s and used extensively during the Second World War. Its ordnance inventory designation was Sd.Kfz. 161.
Document 6: Tanks of the U.S. in the World Wars: As the American army did not have tanks of its own, the French two-man Renault FT Light Tank was used by US in the later stages of World War I. It was cheap and well-suited for mass production, and in addition to its traversable turret another innovative feature of the FT was its engine located at the rear. This pattern, with the gun located in a mounted turret and rear engine, became the standard for most succeeding tanks across the world even to this day.
Document 7: History of the tank: The history of the tank began in World War I, when armoured all-terrain fighting vehicles were first deployed as a response to the problems of trench warfare, ushering in a new era of mechanized warfare. Though initially crude and unreliable, tanks eventually became a mainstay of ground armies. By World War II, tank design had advanced significantly, and tanks were used in quantity in all land theatres of the war. The Cold War saw the rise of modern tank doctrine and the rise of the general-purpose main battle tank. The tank still provides the backbone to land combat operations in the 21st century.
Document 8: Superfiring: The idea of superfiring armament is to locate two (or more) turrets in a line, one behind the other, but with the second turret located above ("super") the one in front so that the second turret could fire over the first. This configuration meant that both forward or aft turrets could fire at any target within their sector, even when the target was in the same vertical plane as the turrets.
Document 9: Panzer VIII Maus: Panzerkampfwagen VIII Maus ("Mouse") was a German World War II super-heavy tank completed in late 1944. It is the heaviest fully enclosed armoured fighting vehicle ever built. Five were ordered, but only two hulls and one turret were completed before the testing grounds were captured by the advancing Soviet forces.
Document 10: Ram tank: The Tank, Cruiser, Ram was a cruiser tank designed and built by Canada in the Second World War, based on the U.S. M3 Medium tank. Due to standardization on the American Sherman tank for frontline units, it was used exclusively for training purposes and was never used in combat as a gun tank. The chassis was used for several other combat roles however, such as a flamethrower tank, observation post, and armoured personnel carrier.
Document 11: LRAC F1: The LRAC F1, officially called "Lance-Roquettes AntiChar de 89 mm modèle F1" (89 mm anti-tank rocket launcher model F1) is a French reusable rocket launcher developed by Luchaire Défense SA, and manufactured in cooperation with Manufacture Nationale d'Armes de Saint-Étienne and was in the 1970s marketed by Hotchkiss-Brandt. It replaced the 89 mm M20A1 Super Bazooka in French Army service. Through the use of fiberglass and plastic in the launcher it is over 2 kg lighter when loaded than the M20A1 while having a greater effective range. The LRAC FI is sometimes referred to as the STRIM 89mm antitank rocket launcher from the abbreviations for the private firm "Société technique de recherches en industries mécaniques" that was contracted in 1964 by the French Ministry of Defence, to research a replacement for the M20A1 Super Bazooka. In the early 1970s, two antitank weapons were placed in production for evaluation by the French Army to replace the M20A1: the 80mm ACL-APX, a recoilless cannon with a rocket assist projectile, and the 89mm LRAC F1 STRIM 89mm rocket launcher. The STRIM design was chosen as the replacement for the M20A1 based on its higher penetration ability of its antitank ammunition and the much lower over all manufacturing costs compared to the 80mm ACL-APX system.
Document 12: Panzer VII Löwe: The Panzerkampfwagen VII Löwe (Lion) was a design for a super-heavy tank created by Krupp for the German government during World War II. The project, initially code-named VK 70.01 (K), never left the drawing board, and was dropped in 5–6 March 1942, in favor of Porsche's heavier Panzer VIII Maus.
Document 13: Centurion (tank): The Centurion was the primary British main battle tank of the post-Second World War period. Introduced in 1945, it is widely considered to be one of the most successful post-war tank designs, remaining in production into the 1960s, and seeing combat in the front lines into the 1980s. The chassis was also adapted for several other roles, and these have remained in service to this day.
Document 14: FCM F1: The FCM F1 was a French super-heavy tank developed during the late Interbellum by the "Forges et Chantiers de la Méditerranée" company. Twelve were ordered in 1940 to replace the Char 2C, but France was defeated before construction could begin, a wooden mock-up being all that was finished. The FCM F1 was large and elongated, and had two turrets: one in front and one in the back, with a single high-velocity gun in each turret. The rear turret was higher so it could shoot over the first one. The vehicle was intended to be heavily armoured. Its size and protection level made it by 1940, at about 140 tons the heaviest tank ever to have actually been ordered for production. Despite two engines its speed would have been low. The primary purpose of the tank was to breach German fortification lines, not to fight enemy tanks. The development path of the FCM F1 was extremely complex, due to the existence of a number of parallel super-heavy tank projects with overlapping design goals, the specifications of which were regularly changed. For each project in turn several companies submitted one or more competing proposals.
Document 15: Chauchat: The Chauchat, named after Colonel Louis Chauchat, the main contributor to its design, was the standard machine rifle or light machine gun of the French Army during World War I (1914–18). Its official designation was "Fusil Mitrailleur Modele 1915 CSRG" (in English: ""Machine Rifle Model 1915 CSRG""). Beginning in June 1916, it was placed into regular service with French infantry, where the troops called it the FM Chauchat. The Chauchat machine rifle in 8mm Lebel was also extensively used in 1917–18 by the American Expeditionary Forces (A.E.F), where it was officially designated as the "Automatic Rifle, Model 1915 (Chauchat)". A total of 262,000 Chauchat machine rifles were manufactured between December 1915 and November 1918, including 244,000 chambered for the 8mm Lebel service cartridge, making it the most widely manufactured automatic weapon of World War I. The armies of eight other nations – Belgium, Finland, Greece, Italy, Poland, Romania, Russia, and Serbia – also used the Chauchat machine rifle in fairly large numbers during and after World War I.
ground_truth: operational tank ever made