ALEXANDRIA, Va., March 24 -- United States Patent no. 12,583,561, issued on March 24, was assigned to Francesco Belvisi (Trapani, Italy).
"Sailing boat with an auxiliary hydrodynamic surface" was invented by Francesco Belvisi (Pantelleria, Italy).
According to the abstract* released by the U.S. Patent & Trademark Office: "A sailing boat has an auxiliary hydrodynamic surface carried by a main boom connected in an oscillating way to a deck of the boat, about an axis of articulation parallel to the longitudinal direction of the boat. A drive system lowers the main boom on one side or the other of the boat in such a way that the hydrodynamic surface is selectively lowerable in a first operative position on one side of the boat to be put into ...