The TO-55 is a Soviet flame tank, an experimental modification to the workhorse of the Red Army, the T-55, though it does not include a number of features present in the T-55A. It replaces its coaxial machinegun for a flamethrower effective at up to 200 metres. Like many other Soviet flamethrowers, this one operates by "charges" and not through a continuous stream of flame. The TO-55 contains 12 incendiary charges, at the cost of a reduced ammunition load for the main cannon.