Abstract: An aquatic propulsion device to be worn on at least one leg of a swimmer includes at least one first portion configured to be securely attached to the leg of the swimmer. The first portion includes a first bearing part having a first inner face shaped so as to bear on the tibia of the swimmer, and a first outer face opposite to the first inner face. The device also includes a second portion having a foil for propelling the swimmer, a second bearing part carrying the foil and having a portion complementary with the first bearing part so that the device has an attached configuration and a detached configuration.

Abstract: The invention relates to a vessel comprising a wind propulsion unit (100) that is elongate in a vertical direction when in the operating position comprising propulsive elements (111, 112) and a mast (121).

Abstract: A submersible vehicle is provided which is able to achieve six of freedom utilizing a combination of only two thrusters with no external control planes. Each of the two thrusters can include a plurality of ducts which can be selectively opened or closed, to varying degrees, to achieve six degrees of freedom for both control and propulsion.

Abstract: A stabilized flotation platform that is used for supporting supplies for those enjoying time in the water. The uniqueness is the stability provided by its construction such that materials contained on or in the device do not spill into the water.

Abstract: An attitude adjustment apparatus for a self-propelled bio-inspired robotic fish includes a fish body, where the fish body includes: a housing; a center-of-gravity adjustment assembly, located in the housing to adjust a center of gravity of the fish body, and including at least one counterweight and a screw-slider mechanism that drives the counterweight to move in a head-to-tail direction; and a suction and drainage system, located in the housing to adjust a weight of the fish body, and including a ballast tank and a water control assembly for controlling a water level in the ballast tank. The center-of-gravity adjustment assembly is combined with the suction and drainage system to rapidly change the weight and center of gravity of the fish body, so as to quickly adjust the pitching attitude and heaving state of the robotic fish.

Abstract: An inflatable oar frame and methods of making and using an inflatable oar frame adapted to removably mount over a watercraft interior, wherein oar towers can couple to the inflatable oar frame to provide an interface between the oars and the watercraft.

Abstract: A gyroscopic roll stabilizer includes an enclosure, a flywheel assembly, a bearing, a motor, and a bearing cooling circuit. The enclosure is mounted to a gimbal for rotation about a gimbal axis and configured to maintain a below-ambient pressure. The flywheel assembly includes a flywheel and flywheel shaft. The bearing rotatably mounts the flywheel assembly inside the enclosure for rotation about a flywheel axis. The bearing has an inner race and an outer race. The inner race is rotationally fixed relative to the flywheel shaft, and the outer race is held rotationally fixed relative to the enclosure. The motor is operative to rotate the flywheel assembly. The bearing cooling circuit is configured to transfer heat away from the bearing by recirculating coolant along a closed fluid pathway. The gyroscopic roll stabilizer is configured to transfer heat away from the inner and/or outer race of the bearing to the coolant.

Abstract: A marine drive is for propelling a marine vessel. The marine drive has a propulsor configured to generate a thrust force in a body of water, an electric motor that powers the propulsor, a battery having a battery port for outputting battery power, a supporting frame that supports the marine drive relative to marine vessel, the supporting frame having a frame interior that retains the battery, and a motor port in the frame interior, wherein inserting the battery into the frame interior engages the battery port with the motor port so that the battery provides electric power to the electric motor. A removable cover is provided on the motor port.

Abstract: The invention relates to a sailing rig system (SRS) for a sailing ship comprising one or more airfoil sails comprising one or more sail defining frames including at least three airfoil sail shape-defining edges and/or at least three airfoil sail shape-defining corners. The sail may be controllable, rotatable, pivotable, trimmable, reefable, stowable, slidable, windable, guidable, coaxial, weathervaning, wind/sun tracking, freestanding; it may provide cambering, reinforcing, sealing, boundary layer control, shielding means, sections and connections and it may be transparent. The frame may be a closable/deployable rotor sail frame. The frame may include rig components and the SRS may further comprise vertical/oblique/horizontal spars coupled with spar couplings. It may further comprise lateral, fore-and-aft, superposed sails, actuators, power generators, power sources, thermal management systems, defined rotor sails. It may provide sail twist. It may be coupled with a sailing ship with defined ship couplings.

Abstract: A navigational buoy that includes a finned, hollow, transparent, spherical shell that floats on water. A multi-wheeled motor-unit sits inside the shell, and ballast weights attached to the motor unit cause it to rest on the bottom of the shell. A biasing structure attached to the motor unit, lights, and other aspects are included in some embodiments.

Abstract: A boat includes an inner hull layer an outer hull layer. Each layer includes a deck, a starboard side, a port side, and a stern. Each layer is assembled from flat sections. The boat further includes a waterproof layer located between the inner and outer hull layers. Each layer can be disassembled for boat storage purposes.

Abstract: A hydrofoil board having a hydrofoil configured to be automatically controlled to stabilize the board in a level position even when incurring waves. The hydrofoil includes a pair of individually controllable flaps that control the pitch and direction of the hydrofoil board when propelled in motion. A processor uses an inertial measurement unit (IMU) to obtain orientation and acceleration information of the hydrofoil board. A global positioning system (GPS) unit is also used as an additional speed and location sensor. The processor combines IMU data with a user/rider's input, such as selected speed and direction via handheld wireless controller, and individually controls the flap motors to position the flaps, and the propulsion motor to set speed. In one example, the controller is configured to bring the hydrofoil board to a complete and stabile stop.

Abstract: An upright tank-based propulsion assistance rotor sail system is proposed. The system may include an upright tank fixed to a hull of a ship, and a rotor sail in a form of a cylindrical shape having a length and diameter greater than or equal to the upright tank, and installed to surround part or all of an outer circumferential surface of the upright tank. The rotor sail may be rotatably installed while surrounding the upright tank concentrically with the upright tank, and may be movable along a height direction of the outer circumferential surface of the upright tank to maintain a predetermined height. In addition, a vessel equipped with the upright tank-based propulsion assistance rotor sail system is proposed. The fuel tank may be installed to stand upright on the vessel so that the rotor sail is installed to be movable in the vertical direction.

Abstract: A wearable water shoe apparatus for walking, standing and jet siding on water, includes in each of a first water shoe and a second water shoe (i) a sleeve to receive a leg of a user and (ii) a bottom section. The sleeve has a platform for standing thereon. Each pair of a plurality of pairs of jet motors is configured to eject a jet stream of water. A stabilization unit, including a tilt sensor and a plurality of gyroscopes, is configured to detect a stabilization state of at least one of the first water shoe and second water shoe. A processing unit is configured to receive output from the stabilization unit, determine a direction of movement indicated by the user and direct at least one of the pairs of motors to eject a water stream out of at least one of the water shoes based on the indicated direction.

Abstract: A mechanism suitable to moor and/or connect, engage, fender, or couple a vessel to a terminal such a dock, wharf, pier, pontoon, floating structure, off-shore structure, or another vessel. Typically, mechanism is used in a mooring robot or fender and will comprises a base, the mechanism dependent from the base and supporting an element remote the base. The element may be configured as a fender element or attachment element. The extension mechanism forms part of sarrus mechanism formed of the base, extension mechanism, and attachment element. The sarrus mechanism allows the attachment element to extend linearly transversely from the base in the sway direction. The use of a sarrus mechanism allows for a compact footprint design, that is also very stable in the surge and heave directions.

Abstract: A floating body capable of moving on water is provided. The device includes a recovery container with an accommodation space for accommodating target objects and an opening communicating with the accommodation space; and an agitation device rotatably installed on the floating body, forming a gap with the edge of the opening, the projection height of the gap on a vertical plane being within a threshold range, the gap being configured to allow the target objects to pass through and enter the accommodation space.

Abstract: A floating boat lift is disclosed. The floating boat lift comprises a plurality of tanks, wherein each of the plurality of tanks comprises at least one indentation. Further, the floating boat lift comprises a top frame positioned and secured to the top surface of each of the plurality of tanks through one or more support brackets. The support brackets establish a connection with the top frame and the indentation of the respective tanks to create a clamping mechanism to avoid piercing the respective tanks and to maintain the structural integrity of each tank. Tanks are easily removed or replaced for maintenance purposes and may be added or removed to modify the size of the floating boat lift.

Abstract: An wind deflection apparatus (240), including: a fairing (242, 250) shaped to have a leading edge profile (606) that is configured to cooperate with a side profile of a console (206) to redirect an oncoming airflow laterally away from an occupant positioned behind the console; and a mounting apparatus (350) configured to secure the fairing relative to the console. A console (206) having the wind deflection apparatus. And a boat (202) having the wind deflection apparatus.

Abstract: A rigid propulsion wing for a moving vehicle, including at least one first section and one second section, a first end and a second end each including attachment means for reversibly connecting to said moving vehicle, said first section and said second section being movable with respect to each other by means of articulating means such that said propulsion wing assumes, and moves from, at least a first deployed position to a second deployed position, and vice versa, in which deployed positions said first and second sections are arranged, substantially vertically, in the extension of each other, and in which said first end, or respectively said second end, are reversibly connected to said moving vehicle by means of the attachment means thereof.

Abstract: An aquatic system is provided for use with an object. The aquatic system includes: a parameter detector being configured to detect a parameter of the object and to output an activation signal based on the detected parameter; an inflatable bladder being configured to inflate with a gas to displace a volume of water when the object is in the water; a memory having instructions stored therein; and a stabilization controller being configured execute the instructions to cause the inflatable bladder to inflate so as to establish horizontal buoyancy of the object based on the activation signal.