mounting point on the vehicle and each tired wheel 69 is capable of being steered where an all steering vehicle is needed the marine propulsion motor 70 is connected to a waterjet or propeller the waterjet is preferred for safety marine propulsion unit 71 where the road wheel drive motors 68 and or the marine propulsion motor s 70 use ac current motor controllers 67 make the conversion between ac and dc power and control the power input to the respective motor a central component management unit 73 monitors input and output signals of all components and controls the operation of the gensets 63 the battery interface switch 65 which controls the power to each motor and controls the battery charge amp discharge rate the battery box temperature and the battery fluid levels and interfaces with the vehicle controller 74 the vehicle controller 74 provides signals from the gas pedal 75 the brakes 76 the throttle quadrant 77 the turn indicators the steering wheel and the vehicle accessories amp ancillary equipment and links them to the central component management unit 73 for example when the gas pedal 75 is depressed the vehicle controller 74 signals the central component management unit 73 which activates the battery interface switch 65 to provide electrical power to the road wheel drive motors 68 via the motor controllers 67 where applicable depending upon the mode selected all wheels are driven or only the selected set of wheels the functions of positive traction and differential rotating rates of the wheels in turn is controlled by the central component management unit 73 when the.