12results about "Hull keels" patented technology

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

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.

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.

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.