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| Number | Title | Issue Date |
| 8122840 | Transom stern hull form and appendages for improved hydrodynamics An improved displacement hull form for ships and boats, in one of many possible embodiments includes a transom stern hull form (100F) having a hull underside (120A) that is substantially horizontal in transverse orientation along the aft-most portion o... | 02/28/2012 |
| 7353763 | Ship A ship includes semi-bottoms that transition into the ship's sides, and a keel that extends downwardly from the semi-bottoms. The keel and semi-bottoms form an equivalent of 120 degree therebetween. Each of the sides is located in the same planar surface with the ap... | 04/08/2008 |
| 7328668 | Hybrid vee-hull / wing-in-ground effect vessel An improved planing hull which incorporates a vee-bow (1) with outboard chines (2) designed to trap air and water between said chines. As the chines (2) extend aft they become wider and deeper (3) in the water. The vee-bow (1) ensu... | 02/12/2008 |
| 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 according to a side hull contour. The chines, starting fr... | 01/23/2007 |
| 6923137 | Water sports performance boat hull A water sports performance boat includes a hull having a sharpened angle keel for cutting into the water. Reverse chines are carried on port and starboard sides and extending from a forward portion of the hull to an aft portion for inducing a lifting of the bow at g... | 08/02/2005 |
| 6834605 | Low-resistance boat hull A hull configuration having a bow and a stern, for use in a single or multiple hull vessel. The hull configuration has a pair of cutting edges, each cutting edge sloping rearwardly, downwardly and in an outwardly lateral direction, from the bow. Each one of a pair o... | 12/28/2004 |
| 6546890 | Boat hull The hull has two lateral hull portions (5a, 5b) spaced part with respect to each other which each extends from a respective lateral wall of a front hull portion (1) beyond the rear end (1a) of the front hull portion (1). Lateral hull portions (5a, 5) are ... | 04/15/2003 |
| 5784977 | Pontoon for watercraft An improved, planning pontoon boat has first and second spaced apart, elongated pontoons which exhibit a bow end and a stern end relative to the boat. A lower surface of each of the pontoons exhibits two intersecting planar members which terminate adjacen... | 07/28/1998 |
| 5730391 | Universal fluid-dynamic body for aircraft and watercraft A body configuration for improving the fluid-dynamic performance efficiency of aircraft and watercraft comprises a generally conical upper segment (54) and a generally conical lower segment (56) that are joined at a common base plane (53), achieved by inv... | 03/24/1998 |
| 5499593 | Boat hull The invention relates to a boat hull, in particular for high speed crafts, the underside of which has in at least one longitudinal section through or, respectively, parallel to the center plane a profile similar to the profile of an aircraft wing, the ver... | 03/19/1996 |
| 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, 9; 13, 14; 24, 25) arranged parallel to each other symmetr... | 11/22/1994 |
| 5357895 | Illuminated marine advertising vessel A water borne billboard is provided in the form of a marine vessel designed to accommodate a billboard for display along heavily populated coastlines. The billboard is two-sided, both side being visible to observers on the coastline by either rotating the... | 10/25/1994 |
| 5237953 | Accessory rail for boats An accessory rail adapted to be attached to an existing spray rail of a boat bottom is disclosed. The accessory rail includes a mounting portion having a first supporting surface adapted to abut a substantially vertical surface of the existing spray rail,... | 08/24/1993 |
| 5220878 | Hull for sailing ship A hull for sailing ship makes it possible to sail mostly by sail and by engine when necessity arises. An auxiliary propulsion engine is installed within a ballast portion protruding downward from the bottom of the hull body, so that the auxiliary propulsi... | 06/22/1993 |
| 5218918 | Convertible powerboat A convertible powerboat is provided which consists of a hull having a bow and a stern, a power source at the stern of the hull and a mechanism for altering the power source, so that it can be changed from an outboard motor boat to an air powered boat and ... | 06/15/1993 |
| 5163377 | Sailing yacht High performance sailing yacht designs are disclosed based on a keelless sailing yacht concept having fore and aft cambered foils for leeway control which foils replace the function of the standard keel. A keelless sailing yacht of this type is disclosed ... | 11/17/1992 |
| 5129343 | Monohull fast ship A vessel (10) has a semi-displacement or semi-planing round bilge hull (11) characterized by low length-to-beam ratio (between about 5.0 to 7.5) and utilizing hydrodynamic lift. The bottom (15) of the hull (11) rises toward the stern (17) and flattens out... | 07/14/1992 |
| 5080032 | Monohull fast sealift or semi-planing monohull ship A vessel (10) has a semi-displacement or semi-planing round bilge hull (11) characterized by low length-to-beam ratio (between about 5.0 to 7.0) and utilizing hydrodynamic lift. The bottom (15) of the hull (11) rises toward the stern (17) and flattens out... | 01/14/1992 |
| 4899679 | Keel structure A keel structure connected to the hull of a nautical vessel, such as a sailboat, is provided at least at the junction of the vessel hull and the keel with at least one channel extending substantially lengthwise of the keel for guiding the water displaced ... | 02/13/1990 |
| 4781135 | Ship hull A ship hull has a general frame form defining a bottom surface and two side surfaces. The bottom surface of the hull has a horizontal bottom section that extends longitudinally of the hull midway between the two side surfaces of the hull, and the bottom s... | 11/01/1988 |
| 4702188 | Bottom structure of a boat The invention comprises a stepped bottom structure of a boat, in which the steps (5) are mainly straight. The number of the steps is from 2 to 4, preferably 3, and the angle between the mainly straight edge (8) of the step and the keel (1) is from 20° to... | 10/27/1987 |
| 4563968 | Boat with improved hull A boat having a hull which has straight lines in the hull plan normal to the central axis of the keel, the straight lines all making the same acute angles with the keel center line. Preferably the straight lines extend beyond the water line to the chine. ... | 01/14/1986 |
| 4550673 | Hull construction for seagoing vessels A seagoing vessel comprises a hull having a forwardly projecting bulb at its bow. The bulb includes an upper periphery oriented substantially horizontally and exposed above the water surface when the vessel is stationary and in a fully loaded condition. A... | 11/05/1985 |
| 4543902 | Construction of hull of vessel such as tanker Disclosed is a hull of a vessel such as a tanker. The hull is basically composed of three hemispheres, at least of two of the hemispheres having an equal diameter, the three hemispheres being connected to one another such that the lines connecting the cen... | 10/01/1985 |
| 4506617 | Ship The prow of the ship with a lower power requirement in open and ice-covered water has a front surface which is forwardly inclined at the top over the entire beam of the ship with marginal cutting edges, preferably on rod-like profiles. The front surface p... | 03/26/1985 |
| 4445453 | High speed displacement type hull A hull is provided including opposite longitudinal upstanding outer sides and a central depending longitudinal displacement-type keel. The forward ends portions of the outer sides and the keel curve inwardly and upwardly, respectively, and merge to form a... | 05/01/1984 |
| 4003327 | Monolithic ship's body of steel concrete or prestressed concrete A monolithic ship's body is formed of a hull containing bulkhead partitions disposed in a hexagonal arrangement to form a grid symmetrical about the longitudinal axis of the hull. The partitions are formed integrally with the hull. The junction between th... | 01/18/1977 |
| 4002131 | Boat hull construction The hull of a generally shallow draft boat comprises a bottom, sides joined to the bottom by chine portions having rounded outer surfaces, and a transom adjoining the stern edges of the bottom and sides. The bottom includes first and second laterally oppo... | 01/11/1977 |
| 3930455 | Boat hull construction A boat hull construction having a bottom formed with a central longitudinal surface and side surfaces spaced on either side of the central surface. Both the central surface and the side surfaces are flat in a cross sectional direction, and the side surfac... | 01/06/1976 |
