The Strv M/40 light tank was the first Swedish tank to be mass-produced. Its design was based on that of the Strv L/60 light tank. The Strv M/40 was a three-man tank, with a 1.46 inch (37mm) main gun and two coaxial 0.315 inch (8mm) machine guns. A Scania-Vabis 142 horsepower 6-cylinder engine powered the …