In order to study the cornering and sideslip properties of wheeled tractors under ship sway, a ship-based wheeled tractor’s lateral characteristics were tested on a large tilt table. The effects of different ship sways including roll, pitch and heave on the wheeled tractors’ driving deviation properties were analyzed based on the simulation software Virtual.Lab Motion. Finally the effects of the pilot’s human factors on the wheeled tractors’ driving deviation properties and deviation characteristics of American active ship-based tractor A/S32A—32 were analyzed.