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.