Abstract: Wakeboat hull control systems and methods are provided to permit the accurate reproduction of a wake behind a wakeboat. The onboard wake control system receives data from a draft measuring system. Incorporation of the data from the draft measuring system permits accurate reproduction of a wake behind the wakeboat after a change in an onboard variable such as the number, weight or position of passengers, the weight or position of cargo and the position of trim tabs or amount/location of ballast.

Abstract: The present disclosure generally relates to a monocoque body for an unmanned underwater vehicle (“UUV”) comprising a nose portion, a tail portion, a body interior surface, a body exterior surface. The monocoque body can be a one-piece structural shell made of fiber reinforced polymer. The UUV may further include transverse structural members.

Abstract: A boat wind and spray protection device which includes at least one panel joined to a coupler-hinge-actuator that is capable of being fixed in relation to a boat. For center console boats, a set of two panels, located on either side of the console of the boat, are designed to open from a position generally parallel and adjacent to the console sides, to an angle and distance sufficient to provide improved passenger protection from wind and spray. The panels may be powered electronically by control buttons that operate electronic actuators, that in turn power the movement of the panels between generally closed to generally open positions, as well as intermediate positions.

Abstract: Disclosed herein is an inflatable watercraft barrier in one example having an inflatable perimeter tube. Also disclosed is a diaphragm sealed to the perimeter tube to form the watercraft barrier between a watercraft and the water in which the watercraft barrier and watercraft float. In one example, a portion of the perimeter tube forms a gate portion which is at least partially selectively deflated so as to be denser than water, and therefore rotates about a gate pivot such that the watercraft may enter the watercraft barrier through the gate portion. Also disclosed is a water pump in fluid communication with the watercraft barrier so as to evacuate water from between the watercraft barrier and the watercraft.

Abstract: Disclosed is a system for underwater exploration using a submerged device towed by a surface vessel, the submerged device being connected to the vessel by a towing line and including equipment supplied by the electricity, characterized in that the submerged device includes at least one device for the local production of electrical energy, the device being an electric hydrogenerator and in that the towing line has no electrical supply cable connecting the vessel to the submerged device.

Abstract: A method of controlling attitude of a marine vessel includes identifying a natural roll frequency of the marine vessel, measuring a roll motion of the marine vessel with an attitude sensor, and then determining that the roll motion exceeds the threshold roll where no corresponding steering input is present. The method further includes determining a counteracting drive movement for at least one propulsion device based on the measured roll motion and the natural roll frequency of the marine vessel. A steering actuator is then controlled to move the at least one propulsion device to effectuate the counteracting drive movement so as to counteract an environmentally-induced roll motion of the marine vessel.

Abstract: A combination radar arch and bimini top includes a radar arch securable on a boat deck over a boat cabin and a bimini top assembly secured to the radar arch. The bimini top assembly includes at least one bimini top base secured on the radar arch, a bimini arm pivotally connected to the bimini top base, and a spring-loaded roller assembly secured to the radar arch and including a canopy connected between the radar arch and the bimini arm. The bimini top base has a drive mechanism coupled with the bimini arm that is configured to displace the bimini arm between a retracted position and an extended position.

Abstract: A marine muffler capable of handling both marine engine exhaust gas and marine engine cooling water includes a double wall baffle partitioning the muffler interior so as to function as a cooling water conduit. The cooling water conduit includes an inlet disposed external to the main muffler housing and an outlet configured and disposed so as to discharge the engine cooling water into the exhaust duct connected to the muffler outlet. The muffler is thus able to convey the engine cooling water through the muffler housing within a dedicated conduit while maintaining the cooling water separate from the exhaust gas. A muffler that is adapted to handle both the exhaust and cooling water flowing from a marine engine allows for the elimination of engine cooling water piping.

Abstract: The present disclosure relates to a drive arrangement for propelling a boat, for example a kayak, having an electric drive motor with a shaft, a receiving device for receiving the shaft and a holder for holding the receiving device on the boat. In some embodiments, the receiving device is pivotable for pivoting the electric drive motor between an operating position and a tilt position relative to the holder. A switchable fixing device is provided for fixing the receiving device in the operating position. The fixing device has an overload protection for disconnecting the fixing in the operating position when a predetermined pivot force in the direction of the tilt position is exceeded.

Abstract: An underwater robot based on a variable-size auxiliary drive and a control method thereof includes a variable-size auxiliary drive module and a main control system. The variable-size auxiliary drive module includes a first variable-size silo, at least two first variable-size units and at least two first gasbags. The first variable-size silo has a first accommodating space with at least two first accommodating subspaces. Each of the first variable-size units includes a first micro push rod motor, a first push rod, a first push plate and a first gas guide tube. The first micro push rod motor, the first push rod and the first push plate are accommodated in the corresponding first accommodating subspace. The first push rod is fixed to the first push plate. one of the first gas guide tubes correspondingly communicates with one of the first accommodating subspaces and one of the first gasbags.

Abstract: A windshield cover and method for protecting a windshield of a towed vehicle, such as a boat, can be removably secured over the windshield when being pulled on a trailer. The cover matches the size and shape of the windshield and is flexible to conform to a curvature of the windshield. The cover has a soft, cushion layer and a waterproof and oil-resistant and non-absorbent material. The cover can have bifurcated panels with a partition corresponding to a passthrough of a boat windshield.

Abstract: According to an embodiment of the present disclosure, a vessel includes: a hull 100 provided with a propellant 140; a deck 200 spaced apart from the hull 100; and a support 300 between the hull 100 and the deck 200, the support 300 configured to support 300 the deck 200 with respect to the hull 100, wherein the hull 100 is disposed below a water surface during operation, and the deck 200 is supported by the support 300 to be disposed above the water surface during operation.

Abstract: A trimaran which includes a self-righting structure positioned near the stern that substantially raises the center of buoyancy. The trimarans two peripheral hulls are shorter than the main hull and positioned near the one end to create an unstable inverted environment wherein when inverted the vessel rests primarily on the self-righting structure and an end of the main hull, substantially raising the center of gravity and creating an unstable configuration. This causes a pitch or roll about the vessel's longitudinal axis, which continues until the vessel has returned to its more stable upright position resting on three hulls.

Abstract: A Dust Mitigation System (“DMS”) is disclosed that includes a fabric-material having a front-surface and a back-surface; a plurality of conductive-fibers within the fabric-material; and a plurality of input-nodes approximately adjacent to the back-surface or the front-surface of the fabric-material. The plurality of conductive-fibers are approximately parallel in a first direction along the fabric-material and are approximately adjacent to the front-surface of the fabric-material and the plurality of input-nodes are in signal communication with the plurality of conductive-fibers and configured to receive an alternating-current (“AC”) voltage-signal from an input-signal-source.

Abstract: A personal watercraft with cargo-carrying surface and an anchor rail mounted on a surface of the personal watercraft. The anchor rail being adjacent to the cargo-carrying surface and exposed to an environment. The anchor rail can include an outwardly facing surface exposed to the environment, and the anchor rail is secured to the personal watercraft in such a manner that the outwardly facing surface is recessed relative to the cargo-carrying surface to form a recess or that the outwardly facing surface is flush with the cargo-carrying surface.

Abstract: A pump intake adapter for pumping shallow levels of fluid from a surface to be drained, the pump intake adapter including a connection on the pump intake adapter to convey the fluid away from the pump intake adapter; an intake surface on the pump intake adapter; and a portion of the intake surface of the pump intake adapter that in operation does not contact the surface to be drained, and creates an open conduit between the pump intake adapter and the surface to be drained through which fluid may flow, the open conduit being in fluid communication with the connection on the pump intake adapter. Other systems and methods are provided.

Abstract: A stand-alone modular removable rudder system for watercraft having a rudder comprising a steering handle coupled to a quick release mechanism adapted to releasably secure said steering handle to said watercraft in proximity to the operator, said system further comprising, a rudder mount adapted to be coupled to the rear of the watercraft by a quick release mechanism adapted to releasably secure said rudder mount to said watercraft, said rudder being carried by a rudder support pivotal about said rudder mount and cables operatively connecting said steering handle to said rudder mount whereby the steering handle can be operated to steer the rudder.

Abstract: A submersible system is provided having a submersible launch vessel that sends instructions from a mission controller to deploy one or more deployable systems for one or more underwater operations. The submersible launch vessel is submerged within a waterbody. A submersible power supply powers the submersible launch vessel and the one or more deployable systems. One or more communication devices is in communication with the mission controller, and the mission controller is located in one of a remote or a local location relative to the submersible launch vessel. The one or more deployable systems, via the one or more communication devices coupled to the submersible launch vessel, are remote controlled by the mission controller to execute the one or more underwater operations. Also, information associated with the one or more underwater operations including telemetry data is transmitted to the mission controller from the submersible launch vessel.

Abstract: The instant invention describes devices and methods of measuring the differential air pressure at numerous representative points across the surface of the sail and providing visual feedback of areas of ideal laminar flow and areas of less than optimal airflow with an indication of how the sail must be adjusted to create the maximal differential in airflow. The invention utilizes an array of sensors that detect minute variations in barometric pressure and other data on each side of the sail surface. These sensors are connected together to form a network or net across the sail. This connection can be physical, using wires, or it may be wireless, using for example, but certainly not being limited to, Bluetooth LE 5.0 or other wireless topologies or technologies. Finally it may utilize a combination of wired and wireless connections to fit individual situations and may couple with existing terrestrial and satellite ship networks.

Abstract: A device and technique for reducing noise experienced by boat passengers from an outboard boat motor is discussed. The device may be implemented in the form of a cover that is adjacent to at least a portion of the boat motor. The cover includes one or more walls or surfaces that reflect or attenuate soundwaves. The cover may be attached to the boat motor and/or the boat. The cover may be integral with the boat motor and/or the boat. The cover may be attached to the boat via a hinge to permit the cover to be pivoted away from the boat motor. The materials used to construct the cover may be provided in layers that help to attenuate, absorb or reflect soundwaves.