Premixed swirl generation device of vessel

A premixed swirl generation device of a vessel is disclosed. The vessel comprises: a hull, a helm, and a propeller. The hull defines a first plumb line and a first axial line perpendicular to the first plumb line and spaced from the bottom of the hull. The first axial line, the first plumb line, and the bottom of the hull together define an installation area at the hull. The premixed swirl generation device comprises a first wing disposed at the installation area along the rotation direction of the propeller, and the first wing and a vessel waterline form therebetween a first included angle between 13 to 45 degrees. By installing the first wing in the installation area and the first included angle formed by the vessel waterline, the stern flow of the vessel can be improved to produce premixed swirl, and the propeller is used to absorb the rotation speed of the vessel waterline premixed swirl, thereby increasing the propelling efficiency of the vessel.