Mitsubishi says that the robot has been developed to carry out non-destructive inspections of nuclear reactor vessels in underwater environments.

It states that the robot has been working at pressurized water reactor power plants across Japan since 1995, and has been used at least 50 times.

The robot can be controlled remotely using a computer and joystick by operators. The robot navigates around the hazardous environment, swimming in the water inside the nuclear reactor vessel, sticking to the walls with vacuum-pad feet, and using a probe to carry out ultrasonic testing.