Polish light tank built before World War II. In addition to TK-3 and TKS was the weapon of Polish armored forces during the September 1939 campaign. .
The design of the tank 7TP was the Polish development of the British Vickers E, whose license is purchased Poland in the interwar period. The tank has been approved for production in the spring of 1935 years. Compared with tank Vickers 7TP was stronger diesel engine and was the first in Europe and one of the first to tanks equipped with this type of engine (near the tanks of Japanese this period, however, produced in small amounts). Apart from the Poles, diesel also appreciated the USSR, which began at that time assembly BT-7M tanks. This solution was much safer than commonly used in gasoline engines that period, due to lower flammability diesel. Changes to the drive system entailed changes in body shape tank, the car was also slightly thicker armor. The first 24 tanks produced in the transitional two-turret variant. The final variant of one turret was in the tower developed by Bofors 37 mm anti-tank gun Bofors. There are no reliable data on the number of tanks produced. Are often administered to 139 the number of pieces as a state 7TP tanks before the war, but according to the statement of J. Magnuski, produced a total of 132 serial tanks (including 11 already completed in September 1939) and at least 4 prototypes (carbon steel). Tanks were produced by the National Institute of Engineering at plants in Ursus. National Institute of Engineering also performed one or two prototypes of an enhanced version of 7TP under the name 9TP, with thicker armor (up to 40 mm) and a more powerful engine CT1D (According to J. Magnuski, prototypes were made of armor plates). Some researchers report the number of tanks 9TP produced a total of 13 pcs. - 2 first prototypes plus 11 copies distributed Polish army after the outbreak of war, which in all probability were upgraded cars.
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