A single propeller mounted toward the front of the vehicle provides both propulsion and air cushion. Two-point steering is provided by front and rear steering vanes with air channels on each side which direct a portion of the downstream flow of air, under the control of the front vanes, to the rear vanes. The air channels shield the operator from the propeller airblast, and produce air curtains on either side of the operator to shield him from spray and dust. Joint steering of front and rear vanes is provided, with means for changing the relative vane angles to counter crosswinds and side slope on hills.