Replacing the D300x500, Vermeer’s new D330x500 Navigator HDD offers 50,000 ft.-lbs. of rotational torque and 330,000 pounds of thrust/pullback force (30,000 pounds more than its predecessor). It is powered by a 540-hp Caterpillar diesel engine that meets Tier 3 emissions. The operator’s station has been redesigned and reconfigured. Vermeer says the machine allows a single operator to run all functions from the roomy, climate-controlled operator’s station.