Abstract: The invention has to do with a system designed to support and/or guide a ground effect machine (1) along a supporting surface (2).This system consists of structure (4) carrying a load (F), a floating partition (5) holding the cushion (9) and a flexible partition (10) defining laterally between the structure (4) and the partition (5) an enclosure of suspension (13) having a variable volume which is connected with the cushion (9) through calibrated orifices (6). The enclosure of suspension (13) has a convergent-divergent configuration, for example biconic. The area of the base (S), the area (S.sub.o) at the level of the collar (15) and the angle (.theta.) of the enclosure (13) are predetermined and remain constant.