28results about "Hull keels" patented technology

A modular keel is arranged along a centerline of a boat hull for displacing a bow wave towards the stern and creating distinct pressure zone situations to draw the keel back into water and reduce pitching. The keel features a base extending along a centerline of the boat hull and two symmetric curved segments. The base tapers toward a vertex on the centerline at a fore transitional area that generates a concentrated high pressure zone to help lift the hull and reduce pitching. The keel includes an aft transitional area for expelling water away from the keel in a laminar flow pattern during forward movement of the boat hull. The keel further includes an intermediate transitional area that creates a low pressure zone to dampen the motion of the hull through waves.

A problem addressed by this invention is to enable quick reach to a target water area and to limit the amount of energy required for navigation in the target water area. A moving body 100 can fly in the air and can navigate on the water. The moving body 100 comprises a hull portion 1 and a rig portion 2 provided on an upper side of the hull portion 1. The rig portion 2 includes a sail 60 which catches the wind during the navigation and a mast 50 which supports the sail 60. The hull portion 1 includes a navigation rudder 32 which adjusts a travel direction of the moving body 100 during the navigation, and a keel 11 which is provided on an lower side of the hull portion 1.

A watercraft with a hull for providing buoyancy to the watercraft, the hull comprising a modular keel receiver arranged on the underside of the hull. The watercraft has a power source and a controller. The modular keel receiver comprises a retaining means configured to receive and removably retain a keel module, a power interface configured to provide power from the power source to a keel module, and, a controller interface configured to communicate data between the controller and a keel module. A keel module for a watercraft, the keel module comprising an engagement means configured to engage with a retaining means of a watercraft.

The utility model discloses a connecting device for quickly installing an inflatable boat keel, which relates to the technical field of inflatable boat keels and comprises a tail plate, a bayonet socket is fixedly connected onto the tail plate, a keel body is inserted into the bayonet socket, hinge seats are fixedly connected to the upper side and the lower side of the keel body, and ball connecting seats are arranged on the upper side and the lower side of the bayonet socket. A connecting rod assembly is connected between the ball connecting seats and comprises a first connecting rod and a second connecting rod; then a groove in a second connecting rod is hooked to a hinge rod, a guide column is inserted into a through hole in the hinge rod, a connecting rod is inserted into the second connecting rod, a fastening screw rod is connected to a flange, and when the fastening screw rod rotates, the first connecting rod and the second connecting rod continuously get close to each other; and when the first connecting rod and the second connecting rod are adjacent to a certain position, the fastening nut is sleeved on the fastening screw rod, and the fastening screw rod is fixed on the first connecting rod and the second connecting rod, so that the fastening screw rod cannot loosen.

To provide a water jet propulsion boat that facilitates smooth turning, even with improved seaworthiness and straight-running stability.SOLUTION: The water jet propulsion boat 10 comprises a hull 20, and at the front of a keel 26 in the hull, a cavity 29 penetrating in the left-right direction is formed.SELECTED DRAWING: Figure 1

The invention relates to the technical field of ship construction, in particular to a ship bilge keel structure. A ship bilge keel structure comprises a ship bilge part and bilge keels arranged on the ship bilge part, the bilge keels comprise bilge keel segments arranged in a segmented mode, every two adjacent bilge keel segments are arranged in a spaced mode, each bilge keel segment is obliquely arranged relative to the horizontal plane, a base plate is fixedly arranged on a curved-surface shell plate, and the base plate is fixedly connected with the ship bilge part. The bilge keel is fixedly arranged on the base plate in a segmented mode. The bilge keels are arranged at intervals in a segmented mode, the stress of the single bilge keel segment can be reduced conveniently, the bilge keels are arranged on the base plates in the segmented mode, the stress area can be increased on the base plates, and stress concentration is reduced; the inclined bilge keel has a water diversion effect; the problems that in the prior art, a bilge keel and a ship bilge need to bear large water pressure loads, so that welding seams are prone to being damaged, or the rigidity of the bilge keel is larger than that of a bilge outer plate, and the hull outer plate structure is prone to being damaged are solved.

A micro-keel cooler for cooling a coolant flowing through a heat-generating component of a maritime vehicle. The cooler includes an inlet adapted to receive the coolant at a first temperature and an outlet adapted to output the coolant at a second temperature less than the first temperature. The cooler further includes a plurality of tubes fluidly coupled to an inlet mixing chamber of the inlet and an outlet chamber of the outlet and configured to direct the coolant from the inlet mixing chamber to the outlet mixing chamber, and a plate coupled to the inlet and the outlet and disposed adjacent to the tubes, the plate configured to direct a fluid over at least a portion of the tubes to cool the coolant flowing from the inlet mixing chamber to the outlet mixing chamber, the fluid having a cooling temperature that is less than the first temperature.

A keel of a vessel with a compact electric propulsion assembly. Said compact electric propulsion assembly is inserted into the upper part of the keel, while battery elements are inserted into dedicated bores in the keel. The keel of the vessel has an integrated housing (1) of the compact electric propulsion assembly with a cover (2), whereby a charging assembly (3) with electronics for wired or wireless control of the drive of the electric drive engine, as well as the electric drive engine (4) with a drive shaft (5) onto which a propeller (6) is attached, are inserted into the housing (1), and whereby bores into which battery elements (7) are inserted are made under the housing (1) and in the keel.

A modular keel is arranged along a centerline of a boat hull for displacing a bow wave towards the stern and creating distinct pressure zone situations to draw the keel back into water and reduce pitching. The keel features a base extending along a centerline of the boat hull and two symmetric curved segments. The base tapers toward a vertex on the centerline at a fore transitional area that generates a concentrated high pressure zone to help lift the hull and reduce pitching. The keel includes an aft transitional area for expelling water away from the keel in a laminar flow pattern during forward movement of the boat hull. The keel further includes an intermediate transitional area that creates a low pressure zone to dampen the motion of the hull through waves.

According to the net fishing boat body structure with the composite boat body structure, the middle inner keel is arranged in the middle of the boat body, and the rib plates are connected with the main force bearing frameworks in the supporting parts on the two sides of the boat body, so that the longitudinal bending strength of the boat body can be effectively improved when the fishing boat executes anchoring and weighing operations; therefore, longitudinal structure deformation and transverse position deformation of the ship body are obviously inhibited; the net stretching suspender can rotate flexibly, so that the net stretching operation efficiency is improved; the fishing boat body structure not only has good buoyancy and stability, ensures operation safety under complex sea conditions, but also has excellent durability and strength, meets the requirement for long-term high-strength operation, and provides an economical, efficient and safe new solution for fishery production.

A modular keel (102) is arranged along a centerline (110) of a boat hull (100) for displacing a bow wave towards the stern (106) and creating distinct pressure zone situations to draw the keel back into water and reduce pitching. The keel includes a base (112) extending along the centerline (110) of the hull (100), the base (112) tapering aft to fore toward a vertex (120) on the centerline (110), the vertex (120) being formed by converging edges (116) of the base (112). The keel includes opposing curved segments (114) laterally extending from the vertex (120) toward a stern substructure (132), the opposing curved segments (114) being outboard from the base (112), wherein each curved segment is defined between an edge (116) of the base (112) and an arcuate contour, wherein the arcuate contour extends from the vertex (120) to a planar facet at the stern substructure (132).

A micro-keel cooler 1800 for cooling a coolant flowing through a heat-generating component (302, Fig 15) of a maritime vehicle (100, Fig 1A). The cooler includes an inlet 1802 adapted to receive the c

The invention relates to a vessel (1) with propulsion means (8, 9), motorized, with a fusiform hull (2) and an improved stability curve and comprising at least one keel (3a, 3b) and at least one bulb (4), the vessel (1) being wave-piercing and configured to navigate at speeds corresponding to a Froude number greater than 0.45 without being of the "planing" type, in which the hull (2) has particular dimensions. The vessel (1) has a stability curve such that the righting lever arm GZ reaches a maximum (GZMax ) for a ship's heel angle greater than 90° and is less than 0.1 meter (GZ10) when the ship's heel angle is 10 degrees. Figure for abstract: Fig. 4

A floating platform for supporting generators of power derived from the wind, the waves and ocean currents, adopting an approximately disc-shaped general configuration with a circular or polygonal perimeter, which optimises its size and therefore minimises substantially its weight and likewise its production costs, as well as other associated complexities; which eliminates the possibility of entering into resonance with the movement of the ocean waves and thus not damaging the equipment installed, not overturning, and not surpassing the maximum list acceptable for wind power generators, nor wave power generators, nor ocean current generators; and which withstands the waves of the greatest size possible, all due to a ratio between its depth or height (13) and the diameter (14) thereof of between 0.06 and 0.35.

Install fixed ballast efficiently. [Solution] The vessel comprises a hull having a pair of side plates and bottom plates, a tank provided in a tank housing space partitioned below by the bottom plate, a plurality of longitudinal reinforcing members spaced apart in the width direction of the vessel, each protruding upward from the bottom plate, with its upper end spaced apart below the tank, and extending in the bow-stern direction, and fixed ballast provided in a holding space formed between adjacent longitudinal reinforcing members in the width direction of the vessel.

A personal watercraft has a hull and left and right flow attachment features connected to an underside of the hull near a stern thereof. The left and right flow attachment features are disposed on opposite sides of a longitudinal centerplane of the personal watercraft and are laterally spaced therefrom. For each flow attachment feature of the left and right flow attachment features: the flow attachment feature has a flow surface facing downwardly, the flow surface having a front end and a rear end, the flow surface extending upwardly and rearwardly from the front end to the rear end; and the flow surface is curved in a longitudinal direction of the watercraft such that, in response to water flowing along the flow surface as the personal watercraft moves forwardly on the water, the stern is pulled downwards relative to a bow of the hull.

A watercraft 100 with a hull 110 for providing buoyancy to the watercraft, the hull comprising a modular keel receiver 140 arranged on the underside of the hull. The watercraft has a power source 120 and a controller 130. The modular keel receiver comprises a retaining means 142 configured to receive and removably retain a keel module (250, Fig 2a), a power interface 124 configured to provide power from the power source to a keel module, and, a controller interface 134 configured to communicate data between the controller and a keel module. A keel module for a watercraft is also disclosed, the keel module comprising an engagement means (470, Fig 4) configured to engage with a retaining means of a watercraft.

The utility model discloses a dragon boat, which belongs to the technical field of dragon boats, the dragon boat comprises a dragon head, a dragon body and a dragon tail, the dragon body adopts a hull structure, the hull structure comprises a support frame body and a ship-shaped shell, the ship-shaped shell is provided with a cabin, the support frame body is erected in the cabin, the support frame body mainly comprises a keel and ribs, the dragon head is installed on the bow of the ship-shaped shell, and the dragon tail is installed on the stern of the ship-shaped shell. The supporting frame body can replace an inner shell of the ship body, the supporting frame body can provide supporting, it is guaranteed that the ship body has sufficient structural strength, compared with a ship body structure with an inner shell and an outer shell formed at the same time, the manufacturing process of the ship body structure is much simpler, and the manufacturing efficiency can be effectively improved.

The linear ship shell structure comprises a main body frame, a keel plate welded to the main body frame and a shell plate welded to the outer surface of the main body frame, and the main body frame is further provided with a connecting assembly, a transmission assembly and an auxiliary assembly; the connecting assembly comprises a main disc-shaped shaft rotationally arranged in the main body frame, a square short rod fixedly installed on the top face of the main disc-shaped shaft and an auxiliary bolt connected with the square short rod in a sliding mode, according to the linear ship shell structure of the ship, the connecting assembly is arranged on the main body frame, and the deck is fixed to the main body frame through the auxiliary bolt in the connecting assembly; and meanwhile, the transmission assembly is arranged to connect the multiple auxiliary bolts on the different main body frames, so that the multiple auxiliary bolts can be driven to be synchronously screwed out at the same time, then the multiple auxiliary bolts are screwed into the deck at the same time, assembly between the deck and the ship shell is rapidly completed, and the use efficiency of the whole device is further improved.

Provided is a ship keel with a compact electric propulsion assembly. The compact electric propulsion assembly is inserted into an upper portion of the keel, while the battery element is inserted into a dedicated hole in the keel. The keel of a ship has an integrated housing (1) of a compact electric propulsion assembly with a cover (2), in which a charging assembly (3) with electronics for wired or wireless control of the drive of the electric drive engine and an electric drive engine (4) with a drive shaft (5) on which a propeller (6) is attached, are inserted into the housing (1), and in which the charging assembly (3) and the electric drive engine (4) are inserted into the housing (1). Holes into which the battery elements (7) are inserted are formed below the housing (1) and in the keel.

The utility model discloses a marine wave active compensation device which comprises a base, protruding strips are welded to one end and the other end of the base, a plurality of sets of plate bodies are placed between the multiple sets of protruding strips in an attached mode, the multiple sets of plate bodies are attached to one another, and multiple sets of threaded holes are formed in one ends and the other ends of the multiple sets of protruding strips. And one ends and the other ends of the multiple sets of protruding strips make contact with the corresponding rod bodies correspondingly, multiple sets of first through holes are formed in the multiple sets of rod bodies, bolts movably penetrate through the multiple sets of first through holes, and the multiple sets of bolts are in threaded connection with the corresponding threaded holes correspondingly. According to the utility model, a plurality of groups of plate bodies are placed between the two groups of raised lines, and by utilizing the design of a replaceable partial area, when one group of plate bodies is damaged, the damaged plate bodies can be taken down and replaced, so that the material utilization rate can be improved, and the resource waste can be reduced.

A personal watercraft includes a hull having a bottom wall and a side wall extending upwardly from the bottom wall. The bottom and side walls define an interior volume of the hull. A battery pack includes a plurality of battery modules. The battery pack is positioned within the interior volume. A flotation body is positioned within the interior volume between the battery pack and at least one of the bottom wall of the hull and the side wall of the hull.

A watercraft comprises a fiberglass hull and a bow thruster module. The fiberglass hull has a keel and a bow, a recess being formed in the hull extending into the keel proximate to the bow. The bow thruster module is mounted in the recess and includes a housing at least partially defining an athwartships tunnel and a propeller mounted in the tunnel, the housing including a fairing generally continuing a profile of the keel and surrounding hull around the recess.

The present invention relates to a boat (1) comprising: • a shell (10); • a casing (12) in which a plurality of racks (14) are arranged; • a plurality of extractable batteries (16) adapted to be plugged into the racks (14) of the casing (12); • a control module (18) configured to control the power supplied to items of electrical equipment (20) on the boat (1) from the batteries (16); the batteries (16) of the plurality of batteries (16) being controlled to supply power to the items of electrical equipment (20) sequentially, one after the other, or in combination, several batteries (16) simultaneously supplying power according to a selectable operating mode from among an economical operating mode, a manoeuvring operating mode and a supercharged operating mode.

The bilge keel capable of reducing the turning radius of the ship comprises a bilge keel main body which is formed by connecting double plates at a certain included angle, is arranged at a bilge part of a ship body and forms a cavity with a wedge-shaped section with the ship body; the bilge keel rotating plate is arranged on the bilge keel main body, and one end of the bilge keel rotating plate is hinged to the bilge keel main body; the adjusting mechanism is connected between the bilge keel main body and the bilge keel rotating plate and is used for adjusting the opening angle of the bilge keel rotating plate; the input end of the control system is connected with a sensor installed on the ship body, the sensor monitors the sailing state of the ship in real time, and the output end is connected with the adjusting mechanism. While the seakeeping performance of the ship is improved, the turning radius of the ship can be effectively reduced, and the maneuverability of the ship is improved.

This invention discloses a composite-driven long-endurance unmanned surface vessel (USV), relating to the field of underwater autonomous vehicle technology. The USV includes a hull, characterized by integrating: a foldable rigid wing sail device mounted on the deck via a rotating base, capable of switching between deployed and retracted states for wind power propulsion; a oscillating wave propulsion device mounted on both sides of the hull bottom via a hinged mechanism, converting wave energy into propulsion; and a modular sub-vessel deployment device embedded within the hull for covertly deploying and recovering mission sub-vessels. This invention significantly extends endurance by integrating multiple power sources such as wind and wave energy; the retractable wing sail and built-in payload deployment greatly enhance stealth; and the built-in modular deployment system supports three-dimensional collaborative operations, expanding mission capabilities.

A polar vessel is disclosed. The polar vessel includes: a keel protruding from the lower part of the vessel; and an echo sounder mounted on the keel, configured to transmit ultrasonic pulses toward the seabed, receive ultrasonic pulses reflected back from the seabed, and calculate the depth of the seabed based on the time required for the ultrasonic pulses to return.

The invention relates to a vessel (1) having motorised propulsion means (8, 9), with a streamlined hull (2), having an improved stability curve and including at least one keel (3a, 3b) and at least one bulbous bow (4), the vessel (1) being a wave piercer and being configured to sail at speeds corresponding to a Froude number greater than 0.45 without, however, being of the planing type, wherein the hull (2) has specific dimensions. The vessel (1) has a stability curve such that the righting arm GZ reaches a maximum value (GZMax) for a heel angle of the vessel greater than 90° and is less than 0.1 metre (GZ10) when the heel angle of the vessel is 10 degrees.