Designed to decrease support equipment and increase operator efficiency, the D300×500 Navigator HDD integrates the power pack, operator's station, and crane with a rack-and-pinion design. All functions, including transport, drilling controls, crane, and drilling-fluid controls, are operated from the operator's station. The unit offers 50,000 ft.lbs. of rotary torque and 300,000 pounds of thrust and pullback capability.