T-18 tank

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MS-1 light tank
MS-1 at the Moscow museum of Armed Forces
Type	Light tank
Place of origin	Soviet Union
Service history
Used by	Soviet Union
Production history
Produced	1928–1931
No. built	~960 by the end of 1931[1]
Specifications
Mass	5.9 tonnes
Length	4.38 m (14 ft 4 in)
Width	1.76 m (5 ft 9 in)
Height	2.10 m (6 ft 11 in)
Crew	2
Armor	6-16 mm
Main armament	37mm Model 28
Secondary armament	2 Fedorov Avtomat Automatic rifles
Engine	T-18 35 hp (26 kW)
Power/weight	5.9 hp/tonne
Suspension	vertically sprung
Operational range	50 km (31 mi)
Maximum speed	17 km/h (10 mph)

The T-18 light tank (also called MS-1, Russian: малый сопровождения, первый, romanized: maliy soprovozhdeniya, pearviy, "Small [Vehicle for] Support, First [type/example]") was the first Soviet-designed tank. Produced from 1928 to 1931, it was based on the Renault FT, with the addition of a vertically sprung suspension.^[2]

The T-18 and its derivatives were essentially unsuccessful designs, but they gave Soviet industry its first experiences in designing armoured vehicles, and in the meantime a number of foreign tank designs were available for production.