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	126
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.^[1]

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.