Patent ID: 8820260

Claim:
A watercraft device comprising: a central body; two lateral hulls; and two or more connecting arms each connecting the central body to one of the lateral hulls, such to cause the central body to be in a raised position relative to the lateral hulls, the two or more connecting arms having a given inclination relative to a horizontal plane of the watercraft device, wherein the two lateral hulls and the central body have longitudinal axes parallel to each other, wherein each of the two lateral hulls has a hydrofoil element disposed therebelow, wherein the hydrofoil element extends substantially perpendicular to the longitudinal axis of a respective lateral hull, and wherein each hydrofoil element is rotatable about the longitudinal axis of the respective lateral hull, thereby moving from an immersed state, in which the hydrofoil element is entirely located below the respective lateral hull, to an idle state, in which at least an end of the hydrofoil element facing the opposite lateral hull of said hydrofoil element is located above the respective lateral hull.