Class 114/61.33 - V-shaped bottom

Subclass of Class 114 - Ships
Definition: Subject matter wherein that part of the hull which is below
No. of patents: 36
Last issue date: 04/08/2008

Number	Title	Issue Date
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
7240632	Personal watercraft center keel A personal watercraft having improved bottom hull shapes in general, and improved center keel shapes in particular. The center keel can have a substantial section over which the keel angle becomes sharper progressing from front to rear, and the concavities on either...	07/10/2007
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
6318286	Hull shape of personal watercraft Provided is a hull shape of a personal watercraft which can enhance speed performance, and still more, can also reduce rolling of a body. A bulging face 12 is formed on an outside part of a rear portion of a hull bottom 20 having a substantially V-shaped ...	11/20/2001
6216622	Boat hull with center V-hull and sponsons A high performance boat hull structure is provided which combines a V-hull bottom portion 12 with mid hull sponsons 31 and 33 which form longitudinal tunnels with adjacent structures. The mid hull sponsons 31 and 33 have horizontally disposed running surf...	04/17/2001
5794556	Hull for small watercraft A small watercraft has a longitudinally extending seat for the operator of the watercraft and one or more passengers. Located on each side of the longitudinally extending seat is a side seat which is configured to seat an additional passenger. This config...	08/18/1998
5699749	Exhaust system, hull, and speed indicator for watercraft A personal watercraft exhaust system, hull underplate, and speed sensor and sponson arrangement. The exhaust system for the engine provides a compact assembly that incorporates a pair of expansion chamber devices on opposite sides of the tunnel to provide...	12/23/1997
5588388	Hull shape of small watercraft A small watercraft hull is shaped to prevent spray from being splashed on occupants of a watercraft, to enhance the course stability of the craft during turning, and to reduce the resistance of the craft body 3 to the water. A longitudinal chine, extendin...	12/31/1996
5586922	Watercraft A small watercraft powered by twin jet propulsion units, each driven by a respective engine. The engine is concealed within a hatch cover that has a larger portion which is removable for removal of the engine and a smaller portion which is pivotal for ser...	12/24/1996
5443026	Boat hull with aft planing members A hull for a boat comprising a main hull bottom having a pair of hull bottom sides, each side having a first longitudinal inner edge and a second outer edge, with the hull bottom sides connected along the first inner edges and extending transversely upwar...	08/22/1995
5394819	Vee bottom structure for boat A Vee bottom structure for a boat includes a stern, a bow and sides which are symmetrical relative to a keel line. The bottom structure comprises a part extending from the stern towards the bow. This part includes central bottoms which are positioned at a...	03/07/1995
5349919	Recreational boat A recreational boat comprising an aft cockpit, a cabin in front of the cockpit, the cabin having a top surface, side walk ways on the port and starboard sides of the cabin, the walk ways having upper surfaces below the top surface of the cabin, and a forw...	09/27/1994
5231949	Dihedral tunnel boat hull This invention is an improved boat hull design for stable operation as a planing-type hull in a wide range of water conditions. The hull is comprised of a substantially V-shaped central hull portion and a pair of adjacent side floats, one on each side of ...	08/03/1993
5199366	High-speed boat A fast watercraft has a central body (11), the V-shaped bottom frames (15) of which become flatter from the foreship towards the stern. In the stern region two mutually symmetrical lateral annexes (12) having chine-like frames are arranged on the central ...	04/06/1993
5191854	Boat The boat has a flap (1) forming a part of its V- or spoon-shaped bow and being unfoldable therefrom. This flap is supported by means of projections (9a,9b) arranged on both of its sides on swivel joints (13a,13b) set back into the inside of the boat with ...	03/09/1993
5125352	Boat hull with bottom sloping upwardly and rearwardly between sponsons A longitudinally extending boat hull having a forwardly tapering nose section and an aft end section that extends laterally comprising the hull being substantially V-shaped in cross section from the nose section rearwardly at least to about 1/3 the hull l...	06/30/1992
5063868	Boat hull for V-bottom powerboats A powerboat hull construction with greatly enhanced performance characteristics is provided. The boat hull construction includes a bow having a forward nose, a stern which includes a transom, and a bottom which extends forwardly from the transom to the no...	11/12/1991
5046439	Hull for an inboard powered boat An improved hull is disclosed for use on an inboard boat of a relatively increased length, the hull having a generally deep V-shaped bottom surface at the bow slowly transitioning to a relatively flat stern to provide increased lift as compared to convent...	09/10/1991
5031556	Marine hull The marine hull has a forebody, a transom, and a bottom extending therebetween having pairs of upwardly formed channels between the forebody and the transom. The channels of each pair diverge rearwardly. Fluid flow exit paths interrupt the channel walls s...	07/16/1991
4958585	Boat hull A boat hull is provided with a unique V-shaped bottom surface to increase lift, to reduce drag, and to maximize speed. The deadrise angle of the V-shaped bottom increases progressively from the stern to a point forward of the stern at a rate of 2° to 6°...	09/25/1990
4903626	Planing motor boat hull A planing boat hull including a bow, a transom, a keel and an underside having: a. a transverse step adjacent the transom which extends partially the width of the underside; and b. a recess bounded by the transverse step and a pair of side walls and havin...	02/27/1990
4843988	Stepped bottom for boat A design for the bottom of a boat is provided which has particular applicability for the case of single-screw planing boats. The invention comprises stepped regions in each after outboard corner of the hull bottom which are sized and configured so as to g...	07/04/1989
4813365	Double deadrise with multiple reflex chine boat hull structure and engine mounting system The double deadrise with multiple reflex chine boat hull structure and engine mounting system relate to designs for power boat hull structures and engine mounting systems. The hull structure combines the use of two pairs of bottom surfaces, reflex chines ...	03/21/1989
4774902	Mid-planing hull A mid-planing hull for a fast, sea-going vessel in which the centers of buoyancy, gravity, and hydrodynamic lift at planing speeds substantially coincide amidships. In a preferred embodiment, the hull includes a full forefoot of conically developed forwar...	10/04/1988
4726310	Boat hull A deep vee entry hull having a central running surface extending fore and aft thereof, the cross-section thereof transitioning from a pronounced vee to a nearly planar configuration from fore to aft of the hull, the central running surface narrowing at it...	02/23/1988
4649851	High speed power boat for calm and rough seaways Hydrocraft, capable of maintaining comfortable seaworthy performance at both low and high speeds, in both calm and rough seas, wherein its hull form coordinates high efficiency of at least two zero deadrise planing surfaces with a wave piercing, wedge eff...	03/17/1987
4619215	Dual step, vee type planing hull for power boats A deep vee entry hull is disclosed and includes a central running surface flanked in the after portion thereof, by inboard, intermediate and outboard running surfaces. The central and inboard surfaces terminate at the aft ends thereof in a first transvers...	10/28/1986
4566397	Crew boat A multipurpose crew and resupply vessel for use in resupplying off shore installations with men, food and supplies, as well as fuel, water and all of the suplies needed by that offshore installation. The vessel is characterized by a wide, flat boat suppor...	01/28/1986
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
4492176	Boat hull A motorized pleasure boat having an essentially V-shaped hull. Pairs of strakes are placed on each side of the hull bottom to reduce side slipping and to increase planing efficiency. Stern extensions project rearwardly from the transom to further improve ...	01/08/1985
4465009	Vee type planing hull for small power boats High speed turning characteristics of a small vee type planing hull are increased by the use of after, outboard running surfaces which are concavely configured....	08/14/1984
4398483	Vee type planing hull with AFT tapered wedges Porpoising control in a high speed planing hull is effected during straight, on plane running and in turning maneuvers by a novel configuration of aft tapered wedges bridging the aft, exit ends of the outboard and next adjacent, inboard running surfaces....	08/16/1983
4361102	Vee type planing hull for power boats High speed turning characteristics of a vee type planing hull are increased by the use of after, outboard running surfaces which are concavely configured and include transverse wedges across the after, inboard halves thereof....	11/30/1982
4233920	Vee hull construction The performance characteristics of a vee type planing hull are significantly increased by a combination of features for reducing drag and increasing attitude control. Exemplary of the former are a concave running pad to which air is inducted to reduce hul...	11/18/1980
4192248	Scooped boat hull having tri-keel surfaces A boat hull having a bow and stern and requiring relatively small draft, having low frictional drag characteristics for high speed, stable performance, wherein the hull has a scooped configuration and defines a tri-keel design, wherein the side and bottom...	03/11/1980

PatentStorm

Quotables

PatentStorm News

Class 114/61.33 - V-shaped bottom