| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 114284000 |
Movably mounted hull portion or hull adjunct
| 53 |
| 114274000 |
Having hydrofoil
| 42 |
| 114288000 |
Having fluid channeling or entrapping configuration
| 33 |
| 114292000 |
Pontoon structure
| 6 |
| 114291000 |
Stepped hull | 5 |
| 20090044741 | STEPPED BOAT HULL WITH FLAT PAD PORTIONS - The boat hull includes a bow, a stern and a bottom surface which extends from the bow to the stern. The hull includes a bottom surface with a deep-V shaped portion extending from the bow to a hull point which is aft of the mid-point of the bottom surface, approximately two-thirds thereof. At least two steps, referred to as flat steps, are included in the bottom surface of the boat, between the hull point and the stern. The steps extend across a portion of the bottom surface. Flat pads extend from each step to the next step or to the rear of the stern. A decrease in the size of the entire hull, referred to as a hull step, occurs at the second or third step in the bottom surface of the boat. | 02-19-2009 |
| 20120042820 | STEPPED BOAT HULL - According to a preferred aspect of the instant invention, there is provided a boat hull that is an improvement over the state-of-the-art stepped hull. More particularly, in contrast to prior art designs, the instant steps are specifically constructed to have an opening/air passage situated on the side of each step. The air passage will be preferably placed on the side of the step closest to the surface of the water or farthest away from the keel of the boar. This feature tends to introduce more air under the boat, thereby reducing water drag on the hull and improving its overall performance. | 02-23-2012 |
| 20120204780 | Marine vessel having reduced skin friction drag - A marine vessel comprising a hull having a wetted area when underway on a surface of a body of water, a series of spaced transducer sections positioned in the wetted area of the hull, and an acoustic generator to energize the transducers to produce acoustic waves having an intensity sufficient to nucleate cavitation upon cavitation nuclei suspended in the water medium. Suspended cavitation nuclei include entrained gases, particulate matter, microbubbles formed from wind-blown breaking waves, and/or phase-boundaries at gas-water or solid-water interfaces in the water medium. The intensity, duty cycle and/or frequency of the acoustic waves are determined and/or regulated according to water conditions to produce microcavitation bubbles in the boundary layer between fifty and two hundred microns in size or to optimally reduce drag. An operator or controller may dynamically regulate the frequency, intensity, and/or duty cycle of acoustic waves according to vessel speed and/or sea surface conditions. | 08-16-2012 |
| 20140000504 | VARIABLE HULL LENGTHS FOR WATERCRAFT | 01-02-2014 |
| 20150114278 | STEPPED HULL - An improved watercraft hull providing stability and maneuverability in turns. The hull may include a longitudinal centerline extending from bow to stern, a first and second transverse air channel that are fluidly isolated from the rest of the hull, the first and second air channels separating the hull into a bow planing portion, a middle planing portion, and a stern planing portion, a first plurality of strakes protruding from the bow planing portion, a second plurality of strakes protruding from the middle planing portion, and a third plurality of strakes protruding from the stern portion. The hull may also include a V-shaped keel portion at the bow portion centerline, and a flattened hull portion at the stern portion centerline having a deadrise angle of 0°, the flattened hull portion being disposed between and directly adjacent to two adjacent longitudinal elements of the third plurality of longitudinal elements. | 04-30-2015 |
| 114283000 |
Having laterally disposed skids or pontoons | 3 |
| 20110100282 | High performance human powered displacement boat including user articulating surface skimming outriggers (amaroas), and beaching, docking, heavy water capability - A high performance human powered boat is disclosed which centers around an articulating aiko and hand-actuated skimming planning outriggers. While the craft is in the static mode, flotation from amavons (combination of traditional ama and elevons) supply static buoyancy; while in interim speeds, amavons skim or plane across the water surface, In optimum performance, small retractable and variably applied skimmers or sweepers (similar to sweep stroke in rowing) control the roll of the craft on an as-needed basis. | 05-05-2011 |
| 20110247542 | WATERCRAFT ACCESSORY - The invention relates to an accessory for a watercraft, the watercraft including a body including a bow having an end, a stern and two sides, extending between the end of the bow and the stern, including gunwales at an upper edge. The accessory includes a body means adapted to lie substantially along the length of one side, substantially proximal to the gunwales. In use, two accessories are used, so that a body means lies substantially along the length of each side of the watercraft, and the body means are configured so as to provide increased flotation of the watercraft in the water. The invention also relates to an accessory for a watercraft which acts as a fender, reduces splash or spray, or increases lift of the watercraft as it moves through water. The invention also relates to a method of installing an accessory on a watercraft. | 10-13-2011 |
| 20140158037 | TRIMARAN HAVING OUTRIGGERS WITH PROPULSORS - An improved trimaran of a type having a central hull, a starboard outrigger, a port outrigger, a starboard crossbar for attaching the starboard outrigger laterally to the starboard of the central hull, and a port crossbar for attaching the port outrigger laterally to the port of the central hull is provided. The improvement comprises a starboard propulsor attached to the starboard outrigger for propelling the trimaran, a port propulsor attached to the port outrigger for propelling the trimaran; and a motor controller connected to both the starboard and port propulsors for controlling the combined propulsion of the starboard and port propulsors for controlling both the speed and direction of the trimaran by tank steering. | 06-12-2014 |
| 114272000 |
Having airfoil | 3 |
| 20090056612 | Methods and apparatus for aerodynamic and hydrodynamic drag reduction and attitude control for high speed boats - The present invention provides methods and apparatus for reducing sinkage and wetted surface, and thus hydrodynamic drag of a high-speed boat through the generation of aerodynamic lift while decreasing overall aerodynamic drag. At least one lift-generating front wing proximate a bow section of the boat with at least one corresponding front air channel may be provided. At least one lift-generating rear wing proximate a transom section of the boat with at least one corresponding rear air channel may also be provided. At least one of the wings may be adjustable to generate aerodynamic lift with one of: (1) a neutral; (2) a transom-lifting; and (3) a bow-lifting pitching moment about a center of inertia of the boat. At least one wing proximate the leading edge of the tunnel of a multi-hull boat may be provided to increase the operational envelope. | 03-05-2009 |
| 20110030607 | Marine Vessel with Extendable and Retractable Surface Effect Wings - A mono boat hull power boat with extendable and retractable surface effects wings. The boat hull has wing cavities housing the wings inside the hull. At the front of wing cavity wing pivots are located, and at the rear of the wing cavities extending mechanisms are located, allowing for the pivotal extension and retraction of the wings in to the hull cavities. | 02-10-2011 |
| 20100043690 | TANDEM/CANARD WIG BOAT WITH SUSPENSION SYSTEMS - This WIG craft has a configuration of tandem/canard type, comprising: a body; a front wing having a relatively small aspect ratio, as installed in the lowest portion of the fore half of the body; and a rear wing having a longer span and a shorter chord length than the front wing, as installed in the rearmost portion of the body. Since the front wing, which is also used for planing, is not fixed directly to the body, but installed through a suspension system, so as to travel up and down while planing along the rough water surface, the WIG craft can take off and land stably even in high waves, and further cruise at a extremely low height safely without worrying about the impacts of the wave. | 02-25-2010 |
| Entries |
| Document | Title | Date |
|---|
| 20090158989 | Ship - A ship designed for use at high speed and heavy seas having a single long and slender hull with a narrow beam and a more or less vertical bow, whereby the front half of the hull has more or less vertical sides, minimal flare in the bow sections and towards the bow an increase in draught at its center line combined with a more or less similar increase of freeboard and whereby the aft end of the hull has a flat or slightly V-shaped bottom with one or more propellers and/or waterjets as propulsion means. In accordance with the invention the bow has a fillet radius of at least 1% of the beam. | 06-25-2009 |
| 20090165693 | Hull structure - A hull structure has a chine serving as a boundary between a broadside and a bottom of a hull. The hull has a configuration in which the hull has a maximum depth in a vicinity of a central position of the hull, the chine is provided so that its level position becomes gradually lower from a bow side toward a stern side, and the bottom has a cross-section having a substantially V-shape from the bow toward the stern, the V-shape having an inner angle becoming gradually smaller within a range of from about 80° to 100° from the bow toward a central portion of the hull and becoming gradually larger from the central portion thereof toward the stern. | 07-02-2009 |
| 20090211510 | 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 adjacent to each vent. Each vent can be formed by a recess in the chine dividing the chine into a forward portion and an aft portion. Each fin is preferably formed longitudinally along the aft portion of the chine and extends below the waterline. The fins counterbalance the removal of a portion of the chine to vent the bottom and increase stability during turns. The hull preferably also includes a pair of chine extensions projecting aft of the transom on each side for reducing or eliminating side-to-side oscillation of the stern when the hull is propelled through the water at slow speeds. | 08-27-2009 |
| 20100024707 | VARIABLE TRIM BOAT - The variable trim boat comprises a pair of hollow bodies, arranged on the sides of the boat in symmetrical position with respect to the longitudinal axis, which stretch from a central position of the hull up to the stem area. The hollow bodies comprise respective no-leakage-chamber box structures, isolated from the boat, suitable to be kept empty or filled up with water to improve the trim and the stability of the boat both in static and in dynamic conditions. | 02-04-2010 |
| 20100050919 | System And Method Of Transporting Over Water With Multiple Vessels - A ship and associated methods of operation. In an example embodiment, a method of transporting includes providing multiple vessels each having a hull defining an air cavity over a water surface. Different ones of the vessels are loaded with material destined for different end locations. The vessels are connected to one another with rigid couplings to effect tandem movement of the multiple vessels over water as one ship while permitting each vessel to undergo changes in pitch. The vessels are transported to a first destination and one or more of the vessels are disconnected from the ship. | 03-04-2010 |
| 20100258045 | MARINE VEHICLE HAVING PRE-SWIRL GENERATOR FOR GENERATING PRE-SWIRL FLOW - A marine vehicle includes a hull, a rudder, a propeller, a swirl generator mounting region provided on an outer surface of the hull and located on a port side or a starboard side where a rotation direction of the propeller is downward, and a pre-swirl generator having a swirl creating wedge disposed in the swirl generator mounting region. The swirl generator mounting region is disposed in front of a central axis of the rudder and behind a vertical line spaced from the central axis by a distance that is 0.2 times the length of the vehicle. The swirl creating wedge is inclined with respect to a waterline by an angle (θ | 10-14-2010 |
| 20110011326 | Powerboat rooster tail depressor - A powerboat with a rooster tail depressor (RTD) includes a hull, a propulsion subassembly on the hull, and a rooster-tail-suppressing subassembly on the hull. The propulsion subassembly propels the hull forwardly, producing a propulsion discharge that extends rearwardly of the stern. The rooster-tail-suppressing subassembly extends rearwardly of the stern over at least a portion of the propulsion discharge where it functions to suppress the formation of a powerboat rooster tail (e.g., for radar signature reduction and increased propulsion efficiency). Various embodiments include one or more of (i) a canopy having a downwardly facing surface that is arched (either curved or faceted), (ii) lift-to-drag ratio enhancing steps in the downwardly facing surface of the canopy, (iii) a rooster-tail-suppressing subassembly configured to enable articulation of the canopy in yaw and in trim, (iv) a skeg for enhancing maneuverability of the boat hull, and (v) a conveniently removable and/or retractable rooster-tail-suppressing subassembly. | 01-20-2011 |
| 20110232557 | BOUYANT HULL EXTENSION PROVIDING LATERAL AND LONGITUDINAL CONTROL FOR LIGHTWEIGHT HULLS - An improved stern design for many types of small watercraft to eliminate “tail dragging”, porpoising, oversteer and “slide out”, improve longitudinal tracking, and provide faster planing at lower speeds. This hull extension, consisting of two buoyant sponsons extending astern of the motor output, supports the weight of the entire motor propulsion unit, extends the planing surface, shifts the center of buoyancy rearward, resulting in an ability to maintain an even fore-aft keel in a very lightweight hull. Under acceleration and cruising, high pressure under the extensions along with an improved center of gravity keeps the boat from tail dragging. Interior chines formed as part of the inner lower surface of the sponsons provide straight tracking under power, even without other hydrodynamic aids, and provide resistance to oversteer or “slideout” in turns. The long sponson extensions protect an outdrive system from contact at the stern or sides of the boat. | 09-29-2011 |
| 20120067266 | Boat Hull - A shallow draft boat having a boat hull that allows for stability, maneuverability, and speed while needing only inches of draft. The hull generally includes a ski, a bottom shell, a left and right chine and a bow wrapper. | 03-22-2012 |
| 20120073489 | Modular Boat Hull Molds and Method of Making Boat Hulls Using Same - The present invention generally provides mold modules for constructing boat hulls, methods of constructing boat hulls using the mold modules, and hulls constructed using the mold modules. The modules may be adjustable, and may be included in a kit for building the hull of many boats of different dimensions but generally the same shape. Each mold module generally comprises a mold in a shape complementary to that of a portion of a boat hull, and an edge mold to form the edge of the hull part formed by that mold module. A mold module according to the present invention may also comprise one or more mold adjustment areas, and calibrators for selecting the boat hull dimensions. Methods for using the aforementioned mold modules generally comprise steps of molding hull parts, removing them from the mold modules, aligning them and finally attaching them together. | 03-29-2012 |
| 20120079976 | WATERCRAFT WITH BOW SPONSONS - A watercraft has a hull having a bow, a deck disposed on the hull, an engine connected to the hull, a propulsion system operatively connected to the engine, a first bow sponson disposed on a starboard side of the bow, and a second bow sponson disposed on a port side of the bow. A sponson suitable for use on a bow of a watercraft is also disclosed. | 04-05-2012 |
| 20120111257 | VESSEL TRAINING DEVICE - The present invention is concerned with a vessel training device which comprises a sleeve adapted to be reversibly mounted and self retaining about the hull of a rowing boat or the like, and carrying one or more floats via a boom mounted to the sleeve. | 05-10-2012 |
| 20120145065 | Boat Hull - A boat hull ( | 06-14-2012 |
| 20120291687 | HELICAL STRAKE SYSTEMS - An apparatus including a strake section having a plurality of helical fins separated by at least one helical opening. A method including forming a helically shaped fin that independently maintains the helical shape once formed. | 11-22-2012 |
| 20130092071 | HYDRODYNAMIC APPENDAGE SUCH AS A KEEL OR A CENTERBOARD, AND A METHOD OF FABRICATION - A method of fabricating a hydrodynamic appendage for a ship, the method including the steps of: forming two metal half-shells having outside surfaces that form the flanks of a hydrodynamically-active portion of the appendage; forming a metal head including a mechanism for securing the appendage to the ship; and assembling together the half-shells and the head so that the head is sandwiched between the top ends of the two half-shells and closes a top portion of an internal volume defined by the half-shells. The half-shells are welded to the head so as to make the internal volume watertight. | 04-18-2013 |
| 20130145978 | WAKESURFING BOAT AND HULL FOR A WAKESURFING BOAT - A wakesurfing boat includes a hull. A bottom of the hull defines a W-shape in cross-section, the W-shape including a central inverted V-shaped portion. A ballast system includes a plurality of sets of ballast tanks. The boat has a plurality of modes: a cruising mode with ballast tanks empty, a first portion of the bottom in contact with the water, a stern-down trim θ | 06-13-2013 |
| 20140182506 | System and Method of Transporting Over Water With Multiple Vessels - A ship and associated methods of operation. In an example embodiment, a method of transporting includes providing multiple vessels each having a hull defining an air cavity over a water surface. Different ones of the vessels are loaded with material destined for different end locations. The vessels are connected to one another with rigid couplings to effect tandem movement of the multiple vessels over water as one ship while permitting each vessel to undergo changes in pitch. The vessels are transported to a first destination and one or more of the vessels are disconnected from the ship. | 07-03-2014 |
| 20140261133 | Swim Platform - A swim platform for mounting onto the stern of a boat. Generally, the swim platform includes an upper platform, a lower platform, and a central support member for interconnecting the platforms and for mounting the swim platform to the boat. The platforms are sized and configured such that one or more persons could comfortably stand or sit on them. A forward portion of the lower platform is disposed proximate a rearward portion of the upper platform. Also, the lower platform is spaced vertically below the top platform and is ideally positioned at or slightly above the surface of the water. In operation, as the boat accelerates, the lower platform tilts towards the water as the bow tilts upwards. As the lower platform contacts the water, an upward force is exerted onto the lower platform, which forces the bow downwards and simultaneously forces the stern up and out of the water. | 09-18-2014 |
| 20150329188 | Boat Outdrive Trim Tab - A trim tab device that serves as a propeller guard for a boat's motor is provided. The trim tab device includes a trim plate having a bracket removably mounted to a boat motor. A hollow cylindrical shell is integrally attached to a base portion of the trim plate. The hollow cylindrical shell defines an inlet opening and an outlet opening. The hollow cylindrical shell is configured to encircle a propeller of the boat motor. The hollow cylindrical shell directs waterflow through the propeller from the inlet opening to the outlet opening. A fin extends outwardly from the hollow cylindrical shell and is configured to securably attach to the boat motor. | 11-19-2015 |
| 20150344106 | VESSEL WITH A FLOW DEFLECTING HYDRODYNAMIC BOW FIN ARRANGEMENT - A vessel with a hydrodynamic duct of flow management at the bow thereof, said duct comprising a pair of lateral walls ( | 12-03-2015 |
| 20160009342 | WAKE SURF SHAPER | 01-14-2016 |
| 20160059934 | SURF WAKE DEVICE FOR A WATERCRAFT - A device to redirect a wake of a watercraft, and a method of use are disclosed. The device includes a main body panel which extends into a flow of water as the watercraft travels through the water, and at least one suction cup which provides connection between the main body panel and a hull of the watercraft. The device changes the shape of the wake by diverting the flow of water in a different direction, and may be used to produce a wake suitable for wake surfing. The device may include at least one vacuum pump in fluid communication with the at least one suction cup, and at least one release actuator for selectively releasing a vacuum generated between the at least one suction cup and the hull of the watercraft by the vacuum pump. | 03-03-2016 |
| 20160129970 | A WATERCRAFT VESSEL WITH A PLANING HULL - A watercraft vessel with at least one planing hull, in the form of a single unitary hull or with two or more interconnected hulls, each hull having at its bottom portion a deadrise angle in the interval 5°-70° and provided with at least one water-deflecting surface which extends rearwardly and outwardly in relation to a keel region and which is oriented and configured so as to create a lifting force, and also a forward thrust on the hull. The forward thrust is caused by a lateral spray water stream, which is redirected rearwardly by the water-deflecting surface. The latter should be located laterally outwardly of but adjacent to an approximately triangular bottom part which is submerged at the planing speed. The hull will also provide a smoother ride than conventional, planing hulls, especially in heavy sea. | 05-12-2016 |
| 20160137273 | Cargo Transfer Vessel - The invention concerns a cargo transfer vessel ( | 05-19-2016 |
| 20190144087 | METHOD AND APPARATUS FOR WATERSPORTS | 05-16-2019 |
