Abstract: A foil assembly for a hydrofoil, a hollow T-shaped connector for mounting in such a foil assembly, and a hydrofoil that includes such a foil assembly. The foil assembling comprises a mast having a first transverse longitudinal cavity, a foil, and a T-shaped connector having a first part that includes a first mechanism for fixing to the foil and a second part that includes a second mechanism for fixing to the mast. The T-shaped connector also has a second transverse longitudinal cavity that leads into the first cavity, such that the first transverse longitudinal cavity and the second transverse longitudinal cavity together form a chamber that allows for protection of elements which are useful for the operation of the hydrofoil.

Abstract: The invention relates to a retractable wing equipping a watercraft. The wing includes a first support upright, a first end of which engages with the hull of the watercraft and a second end of which supports a first hydrofoil. The wing is characterized in that the first hydrofoil and first support upright engage with one another by way of an articulated connection having a degree of freedom in rotation about an axis perpendicular to a longitudinal axis passing through the ends of the first support upright, allowing the hydrofoil to fold parallel to the longitudinal axis.