An air-cushion vehicle has a body structure including a rigid platform, and a shock absorber section of semi-rigid selfsupporting resilient material fixedly attached around the periphery of the rigid platform with the lower surface of the shock absorber section extending outwardly and downwardly below the rigid platform. A thin skirt of tough flexible material is united with the shock absorber section and extends downwardly from the peripheral region thereof. The skirt has integral mounting skirt members which are united with the outer peripheral surface and lower surface of the shock absorber section, and the shock absorber section extends beneath the rigid platform in overlapping relationship with the overlapping surfaces inclined outwardly and upwardly from the horizontal. At the front, the lower portion of the shock absorber section slopes upwardly and forwardly. The rigid platform, shock absorber section and skirt comprise a plenum chamber to which air pressure is supplied.