A hydrofoil section (401) comprising upper (4014) and lower (4015, 4018, 4017) cambered profiles and a reference line in which: the reference line is drawn between the trailing edge (307) of the section and the leading edge (304) or a point close to and below such leading edge, and both profiles have a positive camber, and a substantial part of the lower profile lies above such reference line, and the area bounded by such reference line and by such lower profile lying above such reference line is greater than any area lying below such reference line.

A watercraft has a hull which, in the area of the deck has a support on which parts of the upper body of a user can rest and where the user can hold on to handles. A flow channel is defined on the hull and a propelling screw is disposed in the flow channel. The flow channel has an intake port and downstream of the propelling screw a jet outlet in the stern area. A support body is disposed on the stern area in such a way that the support body extends the support by means of its support surface. In such a watercraft, a considerable increase in traveling speed can be achieved if provision is made for at least one sliding surface to be provided on the underside of the support body and for the support body to be rigidly connected to the hull.