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8991326 Displacement hull form not subject to the limitation of hull speed  
A displace hull with a shape that is both laterally symmetric and fore-to-aft symmetric is disclosed. The hull includes a pair of channels that help to manage a flow of water around the hull. The...
8915206 T-step hull form for monohull planing vessels  
A T-step hull form for monohull planing vessels includes a forward section, an aft section, a transom, a step, and a skeg. The step is transversely oriented and separates the forward section from...
8881666 Ship  
A ship has a water flow forming path (3) formed in a bottom (2), and a propeller (6) disposed in the path (3) and a rudder (8) on a rear side of the propeller (6). A movable side of the rudder (8)...
8323775 Turbulence foil  
The disclosure relates to a layer (1) for reducing air resistance of a forward-moving object, which layer comprises a pattern of surfaces (2) rising in a first direction R, and—channels (3)...
8210116 Watercraft with hull ventilation  
An engine-powered watercraft includes three parallel hulls, namely a center hull with two or more transverse steps, and two smaller outer hulls or amas on either side of the center hull that are...
8201514 Powered boat hull  
A hydrofoil craft, particularly a method of economically modifying a conventional hull with cambered foils to obtain and calculate increased lift from dense spray and to achieve enhanced craft...
8065970 High-speed multihull boat  
A high-speed, multi-hull boat that includes at least three hulls (3, 4), and in which, with the boat being considered to be floating and stationary on a stretch of calm water (1), the cross...
7908989 Multi hull water craft  
The present invention relates to a water craft (10) having two spaced hulls (18, 20) and a tunnel (22) defined therebetween. The water craft (10) is provided with a hydrofoil section (38)...
7448927 Shallow draft boat with a tri-tunnel hull  
A shallow draft boat has a hull that protects a propulsion propeller within a tunnel that passes only partially through the hull from stem to bow. The hull causes mixing of water and air at high...
7418915 Entrapment tunnel monohull optimized waterjet and high payload  
An entrapment tunnel watercraft vessel having three hulls consists of a main hull and two amas arranged outboard of the main hull with the keels of the three hulls being parallel. The main hull is...
7371140 Protective marine vessel and drive  
A marine vessel and drive combination includes port and starboard tunnels formed in a marine vessel hull raising port and starboard steerable marine propulsion devices to protective positions...
7316193 Vessel for water travel  
A vessel for water travel that has the stability of a heavy weighted vessel when at rest in the water and the performance of a lightweight vessel when in a planed condition. The vessel comprises...
7207286 Tri-point hydro sled  
A marine vessel that planes over the water in a straight ahead mode and has a V-shaped bow configuration, two lateral rails, a water jet intake aft of the bow, and a water jet discharge through...
7204196 Powered boat hull  
A hydrofoil craft, particularly a method of economically modifying a conventional hull with cambered foils to obtain and calculate increased lift from dense spray and to achieve enhanced craft...
7165503 Hull of a ship having a central keel and side chines  
A hull of a ship has a front hull part (10) with a deep V-shape contour having an angle gradually increasing from fore to aft to become 180 degrees in a rear hull part (14) with chines extending...
7055451 Vessel hull  
A vessel hull having a pair of vents formed in the chine on each side for allowing air to be introduced to the bottom and a pair of downwardly extending fins formed longitudinally along the chine...
6840825 Amphibious recreational vehicle  
An amphibious recreational vehicle (motorhome, trailer, SUV, and the like) of conventional RV height, width, and length restricted dimensions necessary to travel on highways and roads, and which...
6708642 Tri-sponson boat hull and method of making boat hulls  
A boat hull having an upper hull section, a pair of spaced apart substantially parallel elongated outer sponsons extending from a forward portion to a stern portion of a bottom of the upper hull...
6679192 Integrated entry air cushion marine vessel and marine platform  
A monohull marine platform is provided which includes a plurality of bows each having a flat lower keel. A transverse stern seal is connected to the bows using an inclined lift surface and a pair...
6675736 Boat having channels formed in its hull  
A hull of a boat, which is particularly intended for use with a jet pump propulsion system, is provided with two channels formed in the port and starboard surfaces of the hull and displaced from a...
6648270 Vehicle  
A vehicle is disclosed having a hull with a longitudinal, vertical and lateral axis, the hull further having front end and rear ends and first and second sides. A turbofan engine mounted in said...
6631690 Planing, air-conveying bottom for boats  
A V-bottom for fast motor boats with longitudinal reaction walls reacting to a lateral trust from an air-water mixture which are substantially parallel and symmetrical in relation to keel is...
6546886 Air assisted ship  
An improved marine vehicle that offers very high efficiencies made possible by pressurized gas cushion(s) disposed between its hull(s) and a water surface is presented. The gas cushion(s), in the...
6425341 Boat hull  
A boat hull represented in a high speed attitude relative to a water surface-has a generally monohull section. A forward keel portion is flattened to form a plank-like planing surface having a...
6345584 Hull for shipping with a mono-three-catamaran architecture  
A hull for shipping with a mono-three-catamaran architecture comprises a bow point (11) connected to hull sides (14, 15) that ends at a stern (12); a pair of chines (17, 18) disposed laterally to...
6293218 Tunnel-hulled boat  
A tunnel-hulled boat that has a high degree of maneuverability at low and high speeds with decreased hydrodynamic drag is disclosed. The tunnel-hulled boat is maneuverable in shallow water and...
6293216 Surface effect ship (SES) hull configuration having improved high speed performance and handling characteristics  
A deep-V hull configuration for a surface effect ship (SES) that utilizes a cushion of pressurized air and improves the handling characteristics and efficiency of the vessel is provided by the...
6237522 Bottom structure of personal watercraft  
A bottom structure of a personal watercraft enhances the running performance of a personal watercraft. A concavo-convex face (21) having very small concave or convex portions for drawing air from...
6148757 Hydrodynamic and reinforced catamaran hull design  
An air propelled boat. It is provided with a pair of catamaran hulls, each having a unique catamaran hull design particularly adaptable for travel over land, water, ice or snow. Each catamaran...
6067923 Turbulent stabilizing venturi system  
A hull configuration for the planar surface region in the tunnel area between hulls(pontoons) in a fishing type catamaran. In the tunnel bottom surface is a raised frontwardly located center...
5934218 Planing vessel  
A planing vessel has a hull and a propulsion and control system. The hull has a plane bottom formed of an equicrural triangle in the front and a rectangle at the back, two boards and one or more...
5850793 Hydrochannel tri-hull  
A tri-hull using air and water collectively channeled and controlled through its design to enhance speed and stability of the tri-hull as it moves forward through the water. Structural wings...
5570650 Surface effect vessel hull  
A surface effect hull particularly suitable for use with a catamaran vessel. The twin hulls each comprise a V-shaped portion and a recess portion that receives pressurized gas therein. The...
5476061 Power boat hull  
A power boat hull has an inner running surface with a central running surface and an outer running surface that flanks the inner running surface. The outer running surface forms a channel with...
5435260 Pontoon-type boat  
A pontoon-type boat comprising a deck having opposite sides, and a modified tunnel hull supporting the deck and including a first outer sponson located adjacent one of the sides of the deck, a...
5425325 High-speed lateral-stability hull construction  
A single-body transom type of hull includes reaction flaps extending along side platings of the hull in a direction from bow to stern over at least 10% or more of the length of the ship. Inner...
5415120 Multiple hull air ride craft  
An improved performance marine surface vessel that includes pressurized supporting gas cushions in multiple hulls, normally catamaran-like sidehulls, where such pressurized supporting gas cushions...
RE34922 Watercraft  
A small watercraft adapted to seat one or more riders in motorcycle fashion and which has a hull configured so as to facilitate leaning without capsizing. The foot area for the riders is such that...
5402743 Deep chine hull design  
There is disclosed an inverted bottom structure having generally convex, longitudinal buttock and waterlines lines which creates a venturi structure and a variable pressure/suction situation along...
5401197 Hull  
A number of embodiments of hull arrangements for watercraft that permit forward positioning of the propulsion device but also permit the hull to be constructed as a planing hull. In some...
5365869 Catamaran for pastime, model construction or racing in any competition rating, with induced hydrodinamic stability  
A catamaran for pastime, model construction or racing with induced hydrodynamic stability, having a hull with a board (1) and a pair of longitudinally extended semi-immersible appendages (2, 3; 8,...
5346745 Elastic micro-fabricated surface layer for reducing turbulence and drag on an object while it moves through a fluid medium  
A surface for use in connection with an object in relative motion through a luid medium includes a plurality of surface elements arranged in rows on the surface, with surface elements of each row...
5265554 Boat construction  
A boat is disclosed having a hull with improved operating characteristics. The hull includes a central sponson and outer sponsons on each side of the keel. The sponsons include chines which extend...
5211126 Ship or boat construction having three hulls  
A catamaran design has a third hull positioned between the conventional hulls. The third hull has a length equal to about two-thirds of the length of the conventional hulls, and a recess is formed...
5205767 Propelling system suitable for use on watercraft  
The main rotor (1) located at the bow (3) of the hull (4) is transverse to a vertical plane through the axis of the hull and consists of two or more units of cylindrical wheels (5), which are...
5205235 External rail system for boats  
A system of elongated rails installed on the exterior hull surfaces of boats and projecting externally from the exterior hull surfaces of the boats, and having the functional attributes of:...
5199373 Hull configuration for jet skis  
A jet ski hull has a lower section formed with a pronounced and sharp leading keel portion defined by oppositely disposed curvilinear fluted side walls extending downwardly from the peripheral...
5191849 Multi-hulled boat  
A multi-hulled boat has at least three hulls, with the outside hulls extending forward beyond the central or inside hull or hulls. The hulls are tapered with a cross-sectional configuration that...
5176095 Multiple hull air ride boat  
An improved performance marine surface vessel that includes pressurized supporting gas cushions in multiple hulls, normally catamaran-like sidehulls, where such pressurized supporting gas cushions...
5158033 Air cushion vehicles  
An elongated vehicle body has a forward bow portion, a stern, and a lower portion with the floor and sides runners defining a longitudinal rearwardly opening air channel in the underside thereof....

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