Hydrodynamic or hydrostatic features of hulls or of hydrofoils

BPERFORMING OPERATIONS TRANSPORTING B63Ships B63BSHIPS OR OTHER WATERBORNE VESSELS EQUIPMENT FOR SHIPPING

B63B1/00Hydrodynamic or hydrostatic features of hulls or of hydrofoils

B63B1/02deriving lift mainly from water displacement B63B1/04with single hull B63B1/041with disk-shaped hull B63B1/042the underpart of which being partly provided with channels or the like B63B1/047with spherical hull or hull in the shape of a vertical ring B63B1/048with hull extending principally vertically B63B1/06Shape of fore part B63B1/063Bulbous bows B63B1/08Shape of after part B63B1/10with multiple hulls B63B1/105comprising a cockpit surrounded and pivotally supported by at least three floats B63B1/107Semi-submersibles; Small waterline area multiple hull vessels and the like B63B1/12the hulls being interconnected rigidly B63B1/121comprising two hulls B63B1/125comprising more than two hulls B63B1/14the hulls being interconnected resiliently or having means for actively varying hull shape or configuration B63B1/16deriving additional lift from hydrodynamic forces B63B1/18of hydroplane type B63B1/20having more than one planing surface B63B1/22with adjustable planing surfaces B63B1/24of hydrofoil type B63B1/242Mounting, suspension of the foils B63B1/244Safety systems B63B1/246Arrangements of propulsion elements B63B1/248Shape, hydrodynamic features, construction of the foil B63B1/26having more than one hydrofoil B63B1/28with movable hydrofoils B63B1/283movable around a vertical axis B63B1/285changing the angle of attack or the lift of the foil B63B1/286using flaps B63B1/288using gas exhaust through the foil B63B1/30retracting or folding B63B1/32Other means for varying the inherent hydrodynamic characteristics of hulls B63B1/322using aerodynamic elements B63B1/34by reducing surface friction B63B1/36using mechanical means B63B1/38using air bubbles or air layers gas filled volumes B63B1/40by diminishing wave resistance