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| Number | Title | Issue Date |
| 7293516 | Apparatus for reconfiguration of a variable-draft vessel A vertical translation mechanism for reconfiguring the hull form of a reconfigurable vessel having independently movably side hulls and a center hull is disclosed. The vertical translation mechanism includes a hydraulic-force actuator and a nonmetallic bearing. The ... | 11/13/2007 |
| 7287480 | Nautical transport vehicle having enhanced stability A nautical transport vehicle includes at least one floating member, at least one longitudinal fin pivotally mounted on the floating member, and at least one corresponding plate mounted on the floating member and parallel with the longitudinal fin. Thus, the nautical... | 10/30/2007 |
| 7191725 | Bow lifting body A watercraft having a hull, a fore and aft longitudinal axis and a bow includes a three dimensional low drag submerged lifting body secured to the bow below the design waterline of the hull. ... | 03/20/2007 |
| 7070468 | Multi-hull watercraft with amidships-mounted propellers An efficient double-ended watercraft is disclosed that comprises four low-Froude number hulls: two forward, two aft, two on the port side, and two on the starboard. Each hull comprises an independent engine that drives a propeller shaft and propeller that is located... | 07/04/2006 |
| 7047896 | Multi-hulled vessel A cargo carrying nautical vessel (1) is provided, having a plurality of cargo carrying hulls (2a, 2b) connected by at least two connecting structures (3, 4), each connecting structure including legs (5a, 5 | 05/23/2006 |
| 7040244 | Watercraft having plural narrow hulls and having submerged passive flotation devices A watercraft has at least two narrow hulls with a shallow draft and has one or more passive flotation devices that are entirely submerged. The hulls enclose the power trains for the watercraft and are accessible from the compartments of the watercraft. The passive f... | 05/09/2006 |
| 7004093 | Low drag submerged asymmetric displacement lifting body Low drag underwater submerged lifting bodies which can be used as underwater displacement portions of a vessel whose main hull is at sea level are asymmetrical and have improved lift to drag ratios. The lifting bodies have outer surfaces whose shapes are defined in ... | 02/28/2006 |
| 6912965 | Semisubmersible trimaran A semisubmersible trimaran for use in an afloat sea base is disclosed. The trimaran has an upper deck structure 12 supported on a longitudinal center hull 26 and column-stabilized, longitudinal outrigger pontoons 28. The center hull 26 an... | 07/05/2005 |
| 6736080 | Seagoing vessels A seagoing vessel having a length of between 45 and 175 meters and designed to operate at speeds of between 25 and 70 knots, the vessel comprising a single main hull with stabilising amahs positioned on either side, wherein the hydrostatic value of GM determined in ... | 05/18/2004 |
| 6698375 | Small waterplane area multihull (SWAMH) vessel A Small Waterplane Area MultiHull non-motorized vessel having an upper hull platform located above the design water line of the vessel which is maintained above the surface of a body of water by at least two cylindrical submerged hulls joined thereto by s... | 03/02/2004 |
| 6591776 | Semi-submergence type hydrofoil craft A hydrofoil craft using a novel propulsive system able to greatly reduce wave making resistance at a sailing time is provided. Therefore, a semi-submergence type hydrofoil craft has a craft main body having a water surface craft body located above the wat... | 07/15/2003 |
| 6508188 | Drag-free hull for marine vessels A reduced drag marine vessel providing a mechanism that will reduce or even eliminate the drag along the water-solid interface at the hull of the marine vessel. This mechanism is made up of a revolving elastic shell which is similar to a donut shaped belt... | 01/21/2003 |
| 6470817 | Small waterplane area multihull (SWAMH) vessel A Small Waterplane Area MultiHull vessel having an upper hull platform located above the design water line of the vessel which is maintained above the surface of a body of water by at least two cylindrical submerged hulls joined thereto by supporting stru... | 10/29/2002 |
| 6278904 | Floating robot A floating device is provided, which allows an entire robot main body to float at a site. Mounted on the floating device are an image sensor which captures image data of persons around the robot main body; an information processing device which recognizes... | 08/21/2001 |
| 6273015 | Stabilized electric watercraft for high speed cruising, diving and sailing New electric boat designs are provided that exploit the weight of a battery to stabilize the boat and in some cases to overcome the hull speed limitation problem. The battery mass is enclosed in one or two torpedo-like structures that are mostly or comple... | 08/14/2001 |
| 6213042 | Small waterplane area multihull (SWAMH) vessel with submerged turbine drive A small waterplane area multihull (SWAMH) vessel having an upper hull platform located above the design water line of the vessel which is maintained above the surface of a body of water by at least two cylindrical submerged hulls joined thereto by support... | 04/10/2001 |
| 6009820 | Semi-submersible vessel An uncrossed-braced, column stabilized semi-submersible and improved methods of operation of the same are disclosed. The semi-submersible vessel provides necessary strength to resist hydrodynamic forces via a unitized support system. Improved elliptically... | 01/04/2000 |
| 5954008 | Large deck vessel with multi-legs An upper body, forming a large deck which is always above water, and a submerged body, which is always submerged in the water, are disposed in the up-and-down direction with a certain distance therebetween. The upper body and submerged body are connected ... | 09/21/1999 |
| 5947046 | Semisubmerged twin hull ship What prevents high-speed navigation of a large-scale high speed ship in waves is ship oscillation. The concept of the invention has been derived from an idea to control a ship oscillationless longitudinally with small-size fins by providing the ship with ... | 09/07/1999 |
| 5823130 | Multi-hull tanker and container ship A multiple hull tanker vessel in the catamaran or trimaran style is provided with relatively narrow hulls containing vertically oriented, large volume, liquid storage tanks, the vertical tanks occupying the majority of the available area within the hulls,... | 10/20/1998 |
| 5433161 | SWAS vessel A small water plane area vessel is disclosed which includes at least one normally submerged hull, a superstructure normally located above the level of the water during operation of the vessel and at least one strut connected between the superstructure and... | 07/18/1995 |
| 5140924 | Elevating stern platform for swath vessels An elevating platform attaches at the stern of a small waterplane area twin hull vessel (swath) that can be raised and lowered from a position nearly level to the vessel's deck to a position nearly level to the waterline. The platform allows convenient mo... | 08/25/1992 |
| 4986204 | Oscillationless semisubmerged high-speed vessel An oscillationless semisubmerged high-speed vessel comprises at least one lower hull submerged below the water surface in the cruising state of the vessel, an upper hull above the water surface and struts connecting the lower hull and an upper hull. The l... | 01/22/1991 |
| 4944238 | Semi-submerged ship A semi-submerged ship which has twin, parallel submerged lower hulls spaced apart at least two hull widths, a strut structure extending upwardly from the hulls on each side of the ship, and a cross-structure connected between the upper regions of the stru... | 07/31/1990 |
| 4919063 | Hull construction for a swath vessel An improved hull construction for a SWATH vessel of the type having first and second pontoons disposed beneath a superstructure and coupled thereto by vertically disposed struts. The improvement comprises substantially hollow sponson whose bottom surface ... | 04/24/1990 |
| 4753185 | Floating vessels A vessel includes two or more barge form hulls disposed apart vertically one above the other and multiple spaced connecting structural members rigidly inter-connecting the hulls with a gap therebetween. The upper hull provides the necessary buoyancy to su... | 06/28/1988 |
| 4748929 | Planing catamaran A high-speed planing catamaran is comprised of hulls, each of which has a canard planing surface well forward of the catamaran's center of gravity and a main planing surface aft of and closer to the center of gravity. At planing speeds, the canard surface... | 06/07/1988 |
| 4556004 | Floating device for hoisting and transporting loads The invention relates to a U-shaped arrangement of floats which are ballastable and deballastable so as to raise and lower their height in the water. On each parallel leg of the float arrangement, are mounted supporting beams that are movable along their ... | 12/03/1985 |
| 4440103 | Semi-submerged ship construction A semi-submerged ship having a superstructure supported on struts above a pair of submerged buoyant hulls, the structure being arranged in such a manner that cargo can be stored in or passed through the struts and submerged hulls. Internal structure is mi... | 04/03/1984 |
| 4436050 | Semi-submersible vessel In order to simplify the construction and to reduce the resistance to flow, and to provide a high amount of inertia in relation to all essential axes, an offshore vessel comprises two parallel under-water bodies, four columns mounted symmetrically thereup... | 03/13/1984 |
| 4345533 | Semi-submerged ship Disclosed is a semi-submerged ship comprising at least two lower hulls always located below the surface of water and arranged substantially in parallel to each other with respect to the direction of advance, struts mounted substantially vertically on the ... | 08/24/1982 |
| 4174671 | Semisubmerged ship A marine vessel is provided which comprises a platform member, two parallel hulls disposed below the platform and adapted to be below the water surface when the ship is in operation, each of the hulls consists of an after section, a forward section having... | 11/20/1979 |
| 4150635 | Twin hull semi-submersible derrick barge The derrick barge comprises a pair of laterally spaced elongated hulls having a plurality of upstanding columns spaced therealong supporting a working platform and a heavy duty derrick or crane in spaced relation above the hulls. The hulls buoyantly suppo... | 04/24/1979 |
| 3960100 | Pressurized ship structure for slamming loads The underside of a semisubmerged ship or catamaran-type vessel's platform protected from the slamming loads created by impacting waves. Elongate flexible chambers are fashioned from a flexible fabric and are arranged in a side-by-side relationship on the... | 06/01/1976 |
