|Engine Power (hp)||750|
|Speed Limit (km/h)||53|
|Standard Shell Penetration (mm)||208 - 282|
|Standard Shell Damage||263 - 438|
|Rate of Fire (rounds/min)||7.8|
In the early 1960s, Mitsubishi started development of a new tank that complied with government requirements for armament and defense. The first two prototypes of the STB-1 were manufactured in September 1969 for trials. In 1970 the prototypes were shown to journalists and participated in a military parade.