Abstract: A floating solar system, comprising a floating base having, a buoyance and a lower base frame coupled to the buoyance, a center frame coupled to the lower base frame, an anchor coupled to the lower base frame, a plurality of solar panels affixed to the lower base frame and the center frame to provide electrical power, a lightning rod coupled to the center frame and a lightning rod cap coupled to the lightning rod.

Abstract: A system for enhancing a wake profile produced by a pontoon boat is provided. The system includes a pair of ramps attached to the bottom of a platform supported by at least two pontoons. The ramps may be oriented downward with a rear end of the ramp disposed in the water between the pontoons. The water flowing between the pontoons is displaced downward by the ramps, thereby increasing water displacement and directing the water to produce an improved wake profile. Downforce may be applied to the boat by one or more wake plates, with a faceted portion of the wake plate facing forward and upward, such that when water impacts the faceted portion a downforce is provided. The wake plates may be attached to the ramps or may be separate from the ramps.

Abstract: A hull assembly for a pontoon boat includes a hull extending in a longitudinal direction between a front end and a rear end. A first thruster assembly is attached to a first lateral side of the hull. A second thruster assembly is attached to a second lateral side of the hull. The first and second thruster assemblies include respective thrust units that are each movable between a deployed position and a stowed position.

Abstract: A hull auxiliary mechanism for reducing a draft of a hull, includes a guide baffle on both sides of the hull. Two ends of the guide baffle extend out of a front end and a rear end of the hull. A Lower end of the guide baffle extends out of a bottom of the hull. The front end and the rear end of the hull are flat inclined plates. The bottom of the hull is a flat plate; the hull auxiliary mechanism also includes a water resistance mechanism, and the water resistance mechanism includes a first diversion pressure plate, a second diversion pressure plate and a third diversion pressure plate. Both sides of the guide baffle are used to direct a flow of water to the hull. At the same time, there are three groups of diversion pressure plates at the bottom of the hull.

Abstract: A watercraft includes: a central frame; a deck supported by the central frame; and first and second lateral hulls laterally spaced apart from one another, the central frame being disposed at least in part laterally between the first and second lateral hulls. Each of the lateral hulls includes: a plurality of lower hull panels mounted to the central frame, at least part of an outer surface of each lower hull panel forming a running surface of the watercraft; a plurality of braces connected between the central frame, the plurality of lower hull panels and the deck; and at least one buoyant element received in and substantially filling a space defined between the lower hull panels and the deck. Each brace includes: an inner mount connected to the central frame, a lower mount connected to at least one lower hull panel, and an upper mount connected to the deck.

Abstract: A floatation system for a marine vessel with a starboard pontoon, a port pontoon, and a center pontoon positioned therebetween. Outer strakes each extending along an outer length between forward and aft ends, each having an outer surface at an outer angle from a horizontal plane and an inner surface at an inner angle from the horizontal plane, and each being coupled to one of the starboard pontoon and the port pontoon. Inner strakes each extending along an inner length between forward and aft ends, each having an outer surface at an outer angle from a horizontal plane and an inner surface at an inner angle from the horizontal plane, and each being coupled to the center pontoon. The outer angles of the inner strakes are greater than the outer angles of the outer strakes and the inner angles of the inner strakes are less than 90°.

Abstract: Systems and methods herein provide for floating sensors. In one embodiment, a system includes a waterproof housing, an electronics assembly mounted within the waterproof housing, and a wing structure hingeably attached to the waterproof housing and operable to float the system on a water surface. The system also includes a solar panel configured on the wing structure to provide power to the electronics assembly.

Abstract: A watercraft is provided with fin on its transom. The fin extends outwardly from a portion of the transom that extends into the water. The fin includes a first portion and a second portion positioned rearwardly of the first portion. The second portion is inclined downwardly and rearwardly relative to the first portion and positioned so as to provide lift and to channel water toward the propeller. The watercraft may be a pontoon boat having first and second laterally-spaced pontoons located under the deck on opposite sides of the transom. Additional fins may be mounted on the first and second laterally-spaced pontoons.

Abstract: A system for enhancing a wake profile produced by a pontoon boat is provided. The system includes a pair of ramps attached to the bottom of a platform supported by at least two pontoons. The ramps may be oriented downward with a rear end of the ramp disposed in the water between the pontoons. The water flowing between the pontoons is displaced downward by the ramps, thereby increasing water displacement and directing the water to produce an improved wake profile. Downforce may be applied to the boat by one or more wake plates, with a faceted portion of the wake plate facing forward and upward, such that when water impacts the faceted portion a downforce is provided. The wake plates may be attached to the ramps or may be separate from the ramps.

Abstract: A method to rapidly form a reconfigurable multihull multiplatform floating vessel includes installing a plurality of pin connectors on a plurality of longitudinal hulls, installing a plurality of joints on the plurality of longitudinal hulls, positioning the plurality of longitudinal hulls with the plurality of pin connectors and the plurality of joints proximate each other, mounting a first moveable planar platform having a first end and a second end with the first moveable planar platform mounted a preset distance above a load line of the first longitudinal hull, mounting a second moveable planar platform having a first end and a second end, forming a platform void extending between pairs of moveable planar platforms to provide increased safety for equipment and personnel on the moveable planar platform by preventing impact together of longitudinal hulls, and forming a hull void extending between pairs of longitudinal hulls.

Abstract: System for transporting and installing wind turbines on the seafloor, made up of a structure that has adjustable flotation capacity and is made up of two floating hulls and a series of columns onto which they are mounted with the capacity to move over the same, an upper peripheral frame and a lower peripheral frame, on which means are mounted for fastening and manipulating the wind turbines and piles and ferrules for anchoring said wind turbines to the seafloor.

Abstract: This invention is type of dual-purpose boat, including cabin and hull. This boat is unique in that between the cabin and hull there is a lifting mechanism connecting the hull and cabin, at least one of which has been set up with a buoyancy regulating structure. This invention can be used as a regular boat, or if the cabin is lowered, this invention becomes a semi-submerged vessel that can be used for operational purposes or underwater sightseeing. When the invention enters shallow water or needs to navigate at high speed, the cabin can be raised to prevent beaching and to reduce resistance. The operation of this invention is simple and expands the single function of current boats.

Abstract: Pontoon structure for a boat includes an elongated pontoon with a bottom forming a water entrapment channel between a front end portion and a rear end portion of the pontoon, the bottom configuration causing the pontoon and the supported boat body to quickly rise above the water surface and plane.

Abstract: Liquid treatment systems, components of liquid treatment systems, and methods of treating liquids are disclosed.

Abstract: A system includes a catamaran configured for use in a body of water and having twin hulls, the catamaran comprising an opening between the twin hulls, the opening having a size and shape substantially the same as a payload module. The system also includes the payload module removably coupled to the catamaran in the opening between the twin hulls. The system further includes a common interface coupled to the payload module and the catamaran, the common interface configured to exchange utilities between the payload module and the catamaran.

Abstract: An apparatus for harvesting algae from an open body of water includes a boat having a pair of spaced apart parallel flotation members and a deck disposed on and connected to the members. The spaced apart members define an area therebetween forming a process channel. A separating mechanism disposed on the boat separates the process channel into a plurality of process channel sections arranged in series. The process channel sections are disposed intermediate the flotation members. Each of the process channel sections include a deflector plate, a scum beach, a scum trough, and diffused air piping. The diffused air piping is in fluid communication with a dissolved air flotation system.

Abstract: A jack plate for easily and effectively mounting a secondary motor to a pontoon boat. The mount comprises a horizontal supporting member affixable to a pontoon decking and a downward member rigidly and operably coupled to the horizontal supporting member and extending from the horizontal member downwardly, wherein the motor is operably coupled to the downward member. Optionally, the mount further comprises a supporting member operably coupled on a first end at an intermediate position to the downward member, wherein a second end of the supporting member is affixable to a pontoon hull extension.

Abstract: A catamaran type vessel for use in a wastewater facility for servicing submerged air diffusers is disclosed. The vessel has spaced apart pontoon having an A-frame spanning between the upper decks of the pontoon and connecting the pontoons. A hook connected to a winch is secured to a cross header above the space between the pontoons. The hook is lowered into water and lifts an air header, to which the air diffusers are connected. An air diffuser is then pulled on the pontoons and serviced. The vessel is then propelled to a position to service other air diffusers in the pontoon.

Abstract: A watercraft, including; a mid section (2) and two side sections (3,4), whereby the mid section (2) has a seat (5) for a passenger and whereby the watercraft (1) has a steering mechanism. The watercraft (1) includes a front part (2) and a rear part, relative to a direction of travel of the watercraft (7), that are coupled together by means of a hinged coupling (8). The front part (2) of the watercraft (1) includes the mid section (2) of the watercraft (1), and the rear part (7) of the watercraft (1) includes the two side sections (3,4). The hinged coupling (8) forms part of the steering mechanism, such that as a result of a rotation of the front part (2) with respect to the rear part (7) of the watercraft (1) around the hinged coupling (8), the direction of travel of the watercraft (1) is changed.

Abstract: A hydraulically adjustable planing device mounted midship on a pontoon boat to provide lift to the pontoon boat and reduce drag. The adjustable planing device includes a modular frame and an adjustable planing plate. A front end of the planing plate is rotatably attached to a front member of the modular frame such that the planing plate is movable between a raised position wherein the planing plate is above the waterline and a lowered position wherein a rear end of the planing plate engages the waterline to lift the pontoon boat. In another form, the adjustable planing device includes two or more longitudinally extending planing plates that are individually operable between raised and lowered positions to provide lateral trimming and improved steering of the boat. Optionally, a single skirt plate is attached to each rear end of the single or multiple planing plate(s) for additional lift for longer pontoon boats.

Abstract: A watercraft has a fan propeller, a motor coupled to the fan propeller, an inflatable hull including a first inflatable member and a second inflatable member, and a platform, which is positioned between the first and second inflatable members and coupled to a base of the fan propeller. The motor powers the fan propeller and thereby propels the inflatable hull in a forward direction. The watercraft is suitable for use in varying water environments including white water, open sea water, ice, snow, and shallow water.

Abstract: A vessel comprising a plurality of hulls, a propulsion system including propulsion devices at respective end regions of the plurality of hulls and a control system connected to the propulsion system to control operation of the propulsion devices so as to position the hulls, wherein the propulsion devices are angled relative to the vertical longitudinally of each hull. Such vessel can perform installation functions of sub-surface assets such as tidal turbines, wave energy devices, cable laying and the like, or to facilitate foundation installations and also the function of inspecting sub-surface areas.

Abstract: The present invention increases the heave resistance rate of a barge system from wave motion, as the system is used to install a topsides to offshore structures. One or more heave plates can be coupled at a location below the water surface to one or more barges to change the period of motion of the barge(s) relative to the period of wave motion to better stabilize the barge(s) and resist the heave. A heave plate can be coupled between the barges, or on end(s) or side(s) of the barge(s). In at least another embodiment, each barge can have a heave plate and the heave plates can be releasably coupled to each other. Further, the heave plate can be rotated to an upward orientation during transportation of the topsides to the installation site to reduce drag, and then rotated to a submerged position during the installation of the topsides.

Abstract: A pontoon boat including at least two pontoons and a deck supported on the pontoons. A wall assembly is anchored to the deck and extends generally upwardly therefrom to present an interior space for accommodating passengers. The wall assembly is composed of a plurality of wall segments, each including an open framework of extruded hollow beam members with an open area between the beam members. Each wall segment also includes at least one panel covering at least a portion of the open area, and the panel is secured by an adhesive along at least three of its edge regions to the beam members.

Abstract: This invention is a two tunnel, four hull, trimaran-catamaran, flying boat that incorporates hydrodynamic planing surfaces with the benefit of aerodynamic lift. A boat that accommodates two people, such that, the pilot and passenger sit back to back in a low, semi-reclining position in a distinctive fuselage along the centerline, situated between and below a wing structure on either side, and thus forming the mid-structure of a trimaran. This fuselage flys in air above the water line. A streamlined canopy structure is located overhead and above the wing. The horizontal wing structure forms two tunnels below, each on either side of the centerline fuselage, providing a chamber for aerodynamic lift. Outboard of the wings are the catamaran hull arrangements with two hulls forward of amidship in parallel, followed in tandem by two hulls aft. The four hulls provide hydrodynamic lift.

Abstract: A catamaran-type boat suitable for handling, assembling, and/or transporting off-shore wind turbines, the boat having two side floats constituting a U-shaped floating structure, the open space between the two branches of the U-shape constituted by the two side floats being suitable for receiving a base, the floats being fitted with grippers suitable for gripping the base between the two side floats, and the grippers being suitable for gripping the base and at least two grip levels of different heights.

Abstract: A variety of multi-use, configurable watercraft is disclosed. A first type of watercraft used in a first water-based activity may be used as a component in a second type of watercraft used in a second water-based activity. For example, a stand-up paddleboard (SUP) may be used for paddle boarding, and then converted into a kayak, sailboat, catamaran, motorboat, or other type of vessel by adding one or more components to the SUP. In one embodiment, two paddleboards are used to construct a variety of multi-hull watercraft.

Abstract: Methods and apparatus are disclosed for capturing and removing oil from a body of water with equipment using rod and film technology, which includes a streamlined oil tank that moves in the water and collects surface oil from an attached skimmer, arrays of inverted funnels lowered into the water to concentrate oil for removal, and containment tents to capture leaking fuel or cargo oil from a sunken ship or any underwater oil leak and channel it into a partially submerged rod and film storage tank at the surface.

Abstract: A diving services multihull vessel with a starboard pontoon and a port pontoon, with dive support stations built into the bow and stern, a port independently operable water jet drive operated by a port diesel engine; a starboard independently operable water jet drive operated by a starboard diesel engine; a dive compressor, a water jetting unit, a hydraulic power unit, a decompression chamber, a generator; a fuel tank, an onboard dive server for tracking divers and monitoring dive operations and presenting the information on the display as well as for tracking sensor signals including diver depth, elapsed time of dive, ambient water temperature around a diver, video and/or audio feed from a diver and presenting on a display, as well as transmitting via a network to a location remote to the vessel, wherein the vessel further includes a helm control connected to a navigation control and the jet drives.

Abstract: An oil spill recovery vessel (10) is provided that comprises a catamaran bow section (12) with twin hulls between which an oil skimmer unit (11) is arranged for displacement between a lowered, operating, position in oil-polluted water and a raised, non-operational, position clear of the water. Aft of the catamaran bow section (12) is a trimaran main section (13) made up of a central hull interposed between two outer hulls formed by aft continuations of the twin hulls of the catamaran bow section (12); the three hulls of the trimaran main section have conjoined upper portions. A propulsion unit (53) is operative to move the vessel (10) forward at slow speed for skimming operations, and, with the skimmer unit (11) in its raised position, at a fast speed in which the vessel planes on its trimaran main section (13).

Abstract: A twin-hull paddle board for use while standing or sitting down, the twin-hull paddle board consists of two elongated hulls, a flat platform portion having two side edges, a front edge and a back edge, the platform portion connected across the top of the two hulls intermediate between the front ends and the back ends of each hull, the flat platform portion and the tops of the hulls forming an upper deck portion, the upper deck portion comprising two recessed foot wells placed adjacent to the side edges of the flat platform portion, the recessed foot wells contoured to prevent accumulation or puddling of water during use, and a coupling mechanism for removably coupling the leg portion of the removable seat to the upper deck portion of the paddle board.

Abstract: A marine vessel comprising: a command module; first and second buoyant tubular foils; and first and second struts for connecting the first and second buoyant tubular foils to the command module, respectively; wherein the first and second buoyant tubular foils provide substantially all of the buoyancy required for the marine vessel; and wherein the marine vessel further comprises first and second engines enclosed within the first and second buoyant tubular foils, respectively, and first and second propulsion units connected to the first and second engines, respectively, for moving the marine vessel through the water.

Abstract: A watercraft having a hull, a mast with sail, an aft rudder and a hydrofoil projecting below the bottom of the hull. The hydrofoil is pivotly connected to the hull enabling the hydrofoil to pitch on a pivot axis which is essentially perpendicular to the longitudinal axis of the hull. The hydrofoils have a vertical part which produces lateral forces to accelerate the boat in turns and resist lateral forces from the sail, and a vertical portion which curves into the horizontal portion which produces vertical lift. The angle of incidence of the hydrofoil is controlled by a sensor arm carrying a trailing sensor.

Abstract: A multi-hulled vessel (10) configured as a trimaran. The multi-hulled vessel (10) comprises a main hull (15) and at least one outer hull (17) to each side of the main hull, the main hull (15) and each side hull (17) adjacent thereto being interconnected by a bridge structure (19). The bridge structure (19) and the hulls (15, 17) connected thereby cooperating to provide a deck surface (21) adapted to carry a load. The main hull 15) is configured to define at least one engine room (45) below the deck surface (21) and trunking (70) for provision of services to the engine room. The trunking (70) is routed below the area of the deck surface (21) required for carrying a load. Because the trunking (70) is routed below the area of the deck surface (21) required for load-carrying, it does not extend through that area of the deck surface to impede load movements.

Abstract: A multi-hulled vessel (10) configured as a trimaran. The multi-hulled vessel (10) comprises a main hull (15) and at least one outer hull (17) to each side of the main hull. The multi-hulled vessel (10) is provided with motion control means (40) for providing damping to wave-induced motion, thereby offering ride control. The motion control means (40) comprises a forward motion damping device (41) disposed adjacent the bow (25) of the main hull (15), and two aft dampening devices (43) disposed one adjacent the stern (33) of each side hull (17). With this arrangement, one of the motion damping devices (41, 43) is located at or near each apex of a notional triangular envelope (44) of the vessel (10). Each motion damping device (41, 43) is configured to resist wave-induced motion of the multi-hulled vessel (10) and thereby provide a damping effect. Each motion damping device (41, 43) may comprise an underwater hydrofoil (45), although other damping arrangements are possible.

Abstract: A pontoon boat includes a cover assembly. A front cover section has a front cover area defined by a perimeter thereof and is slidable relative to the central cover section between a retracted position and an extended position. An aft cover section has an aft cover area defined by a perimeter thereof and is slidable relative to the central cover section between a retracted position and an extended position. When in the extended position, the cover assembly defines a perimeter having a length dimension and a width dimension generally matching the length and width dimensions of the perimeter defined by the pontoon's sidewalls. The cover assembly is vertically movable between an up position where the cover assembly is elevated above head level, and a down position where the cover assembly is positioned on the sidewalls to cover an area inside the perimeter defined by the sidewalls.

Abstract: An offshore wind turbine installation vessel, wherein the wind turbine is of the type to be installed on a foundation that is installed on the seabed prior to the installation of the wind turbine on the foundation, wherein the wind turbine is of the type with a vertical mast to be fitted with its lower end onto the foundation, wherein the vessel includes a non-jack-up type floating hull; and a crane structure extending upward from said hull. The crane structure is provided with a hoisting device having one or more wind turbine suspension elements and a wind turbine engagement device supported by the suspension elements and adapted to engage with said wind turbine. The hoisting device is adapted to support and to raise and lower in controllable manner at least the mast of the wind turbine while in vertical orientation.

Abstract: A collapsible catamaran has twin rigid hulls attached by frame members to a platform that holds a rider. The hulls and platform are divided into sections to allow the hulls and platform to be disassembled and transported in a small space. The hulls are substantially hollow and have access ports that allow a rider to store buoyant materials or equipment inside the hulls. A motor mount is attached to the front platform and receives an electric motor that is configured to pull the catamaran through the water. A cover may be attached to the platform to provide shade to the rider. The cover may support one or more solar panels that collect electricity to power the motor. The parts may be combined in a kit, which allows the rider to assemble the components of the collapsible catamaran. The catamaran may then be assembled from and disassembled into the components before and after each use.

Abstract: A complete double-hull cargo containment vessel includes a primary hull and a secondary hull disposed within the primary hull. The primary hull includes a topside deck structural member. The secondary hull includes an interior cargo containment tank. The secondary hull includes a topside structural member configured to seal the cargo containment tank. The primary hull is configured to serve as a first boundary between an operating environment of the vessel and the cargo. The secondary hull is configured to serve as a second boundary between the operating environment of the vessel and the cargo. The topside deck member of the primary hull and the topside structural member of the secondary hull are configured to provide a double-hull on the topside of the cargo containment tank.

Abstract: A lightweight watercraft device designed for use by general consumers and those without means or desire for a traditional, larger boat. The device comprises a pilot seat, an outboard electric motor and steering means mounted to a lightweight foam hull wrapped in a composite shell. The hull comprises a central region bounded by two forward sweeping sides that form the bow of the vessel. The sides taper from bow to stern, terminating at the rear of the boat in a squared configuration. The hull is a unitary foam structure, wrapped in plys of composite material for structural reinforcement. A plank board is bonded between plys along the central axis of the boat, and provides support for the seat, a rear transom board and an area for carrying supplies. Mounted on the transom board is the outboard electric motor, which provides motive power for the vessel.

Abstract: A pontoon boat including a plurality of pontoons and a deck secured to the pontoons. A wall assembly is anchored to and extends upwardly from the deck to provide an interior space of the deck for accommodating passengers. The pontoon boat includes a substantially enclosed storage space defined at least in part by a portion of the deck and a portion of the wall assembly. The wall assembly has a bottom edge that is spaced off of the deck to provide a first air access opening into the storage space from beneath the wall. At least one vent is provided in the wall portion at a location spaced above the bottom edge and in open communication with the storage space. The vent enhances air flow and venting of the storage space.

Abstract: A hull that is part of a system for producing energy through the action of waves. The hull's shape, dimension and orientation make the system less costly and increase the energy provided by the system.

Abstract: According to typical practice of the present invention, a vehicle is remotely controlled and is travelable both in water and on land. The vehicle has two liquid-containment components that are situated generally one above the other. Pumping devices bring about transfer of cargo liquid (e.g., fuel or water) from either component to the other component. In accordance with the liquid transfer, the vehicle turns over, about its longitudinal axis, between two generally opposite buoyant positions, each of which is stable and viable for marine navigation. When the flow of the liquid sufficiently shifts weight from one component to the other, the vehicle inverts; that is, the emptying component flips from the bottom to the top, and the filling component flips from the top to the bottom. One of the buoyant positions of the vehicle is characterized by wheels for amphibiously transitioning the vehicle from water travel to land travel.

Abstract: An onboard lift leg construction for a pontoon boat has a plurality of movable support legs including rear telescoping tube support legs that are fixed to a frame of a pontoon boat. The telescoping tube support legs each include an outer tube fixed to the frame, and an inner tube slidably mounted within the outer tube. A linear hydraulic actuator is secured to a head member that is supported on the outer tube. The actuator has an extendable and retractable rod that is attached or secured to the lower end of the inner tube such that when the actuator is extended, the inner tube is also extended to effectively lift the pontoon boat to which the outer tube is attached. The forward portions of the pontoon boat frame can be provided with pivoting lift legs for lifting the pontoon boat.

Abstract: The invention relates to an apparatus and method for collecting material from a water system, especially from the surface or close to the surface of a water system. The method comprises: maneuvering an apparatus with a cargo space in a water system; conducting water, present in the surface and close to the surface of the water system, and material therein to be collected, in response to the vessel's advancing speed through a collect opening, located in a fore section of the apparatus in its traveling direction, into the cargo space; conducting water from the cargo space back into the water system through an exhaust opening in the cargo space's bottom.

Abstract: A pontoon boat including at least two pontoons and a deck supported on the pontoons. A wall assembly is anchored to the deck and extends generally upwardly therefrom to present an interior space for accommodating passengers. The wall assembly is composed of a plurality of wall segments, each including an open framework of extruded hollow beam members with an open area between the beam members. Each wall segment also includes at least one panel covering at least a portion of the open area, and the panel is secured by an adhesive along at least three of its edge regions to the beam members.

Abstract: A tensioning device is described for a carrying net (6), in particular between the hulls (1) of a catamaran, the carrying net (6) being fastened in a tensile-resistant manner to two mutually opposing legs of a tensioning frame. In order to attain advantageous tensioning conditions, it is proposed that one of the two legs be mounted, as the tensioning leg (5), in the tensioning frame so as to be rotatable about a pivot shaft (10) which is parallel to its longitudinal axis, the pivot shaft extending, when the carrying net (6) is tensioned, on the net side at a distance from the run-off line (13) of the carrying net (6) from the tensioning leg (5), and that an interlocking means (15) be provided for the tensioning position of the tensioning leg (5).

Abstract: New design of vessel with submersible hulls which can transport large cargos at high speed sailing above the waves and which is made up of two parallel submerged bodies (4), clearly cylindrical in cross-section or as hydrodynamic as possible, joined by hydrodynamic profiles (5). Four hydrodynamic legs (3) are located in the confluence between the cylinders (4) and the profiles (5) capable of supporting a platform or loading zone (2) which can move (up or down) on the legs (3) which have a system of vertical displacement so as to raise itself above the level of the waves. The parallel bodies of submerged displacement (4) joined to the hydro-dynamic profiles (5) can be completely covered with a textile of permeable sheets of porosity less than the size of a molecule of water and greater than that of a molecule of air and air can be pumped into the interior.

Abstract: A watercraft hull has a flat pad keel whose beam tapers towards the bow and at the transom is 15% to 25% of the beam at its chines. The hull is symmetric about its centerline, has a fine entry bow, and a pair of hard chines. Between the pad keel and the chines the hull has at least one pair of generally flat longitudinal steps having approximately 0 degrees of deadrise forming planing surfaces symmetrically about the hull centerline. The hull also includes at least one pair of ultra high deadrise panels, outboard of and adjacent to the pad keel, symmetrically about the hull centerline, and extending to the flat planing panels above them. The ultra high deadrise panels have a deadrise approximately 50 degrees. Additional flat planing surface structures having approximately 0° deadrise are installed longitudinally on the hull between the pad keel and the hard chine.

Abstract: The present invention reduces loads and saves steel on topsides and grillage of a catamaran system by creating a lifting force from a barge to the topsides to offset a sagging bending moment of the self-weight on the topsides during transportation. The present invention can reduce the span of the supports on the topsides on the catamaran float-over barges and move the reaction forces toward inner edges of the float-over barges. The lifting force can cause a reduction of stress on the topsides' and grillage's members caused during the topside offloading and transportation. The stress reduction can result in the members withstanding the additional dynamic load caused by a catamaran system without increasing member sizes adequate for an offloading operation. The reduction results in a significant savings, given the size of a typical topsides for a Spar hull or other offshore structure.