AIR CUSHION VEHICLES

An air cushion vehicle is provided with cushion-containing means at least partly constituted by a flexible skirt which comprises an inflatable bag member and individual flexible skirt elements depending downwardly from attachment both to the bag member and the vehicle hard structure. The bag member is attached to the vehicle hard structure along fixing lines positioned one above the other, so that in operation of the vehicle when the bag member is inflated it projects substantially outboard of the fixing lines, and the lower tips of the individual skirt elements are positioned at least outboard of a vertical plane passing through the lower fixing line, whereby when the lower tips of the individual skirt elements contact obstructions or discontinuities in a surface over which the vehicle is operating, the skirt responds to move bodily upwardly, thereby moving the lower tips of the individual skirt elements in an upward and preferably outward direction with respect to the fixing lines of the bag member to the vehicle hard structure.