InterwarLightLight TankSoviet Union

T-37A

In service 1933 - 1942

The world's first mass-produced amphibious tank, swimming on a propeller and a pair of pontoon floats.

Built byFactory No. 37, Moscow

Development history

The T-37A grew out of Vickers-Carden-Loyd amphibious trials and gave Soviet reconnaissance units a machine that could cross rivers without bridging - a propeller and rudder at the rear, buoyancy from pontoons over the tracks. It was too thin-skinned to fight, but hundreds served in Poland in 1939, the Winter War and the first year of the German invasion, where losses were heavy. The line continued through the T-38 and T-40 to the post-war PT-76.

Notable actions

  • Invasion of Poland (1939)
  • Winter War
  • Operation Barbarossa