Abstract: This invention relates to marine skimmer craft that is, watercraft of the kind that is only partially immersed and skims along the surface of the water under propulsion, the craft being supported at least partly by aerodynamic force produced by suitable support structure. According to this invention the support structure comprise wings located in at least two planes: each wing consists of at least two wing panels joinable by their mutually adjacent lateral edges whereby the number of wing panels actually used may be selected in dependence upon the desired lift characteristics and the desired position of the center of gravity of the craft as a whole. As an example, two wing panels may be arranged in one plane on either side of the craft and four wing panels in another plane above its stern.