Abstract: The invention relates to a transport apparatus having at least one crawler vehicle with means for establishing a supporting air cushion between the chassis of the crawler vehicle and the upper side of the ground-engaging track part of the crawler vehicle, the invention being characterized in that the transport apparatus is provided with means cooperating with track-supporting wheels and adapted to hold down the tracks and to stretch the lower track part over the air cushion unit, and that the supporting wheels and the track are provided with cooperating engaging means adapted to prevent sideways travel of the tracks. In a preferred embodiment, the transport apparatus also has means for relieving at least part of the track pressure against the ground in connection with changes in the direction of travel.