Abstract: A vehicle supported by an air cushion extending beneath at least the greater part of the lower surface of the rigid structure of the vehicle. An arrangement of skirts defining the air cushions is described. According to this arrangement, the cushion is bounded on each side of the axis of the vehicle by two parallel skirts, a peripheral skirt and an inner skirt, inclined towards the inside of the vehicle defining between them a series of auxiliary air cushions separated by transverse partitions which form skirts inclined towards the rear. The bottoms of the auxiliary cushions are formed by articulated perforated plates. The edges of the plates are connected to the rigid structure by flexible walls forming a flexible volume connected to the supply of air under pressure for the inner cushion.