Abstract: Disclosed are modular floating platforms configured to be joined together to form a cover over surfaces of natural and artificial bodies of water and other liquids, for reducing evaporation and other purposes. The floating platforms may be motorized and provided with remote control systems, so that the platforms may be assembled together on command to provide uniform coverage of the surface of the body of water. The floating platforms are optionally capable of solar and wind power collection. The platforms are useful for covering mining tailing storage ponds.

Abstract: A personal watercraft has a hull and a deck. The hull defines at least in part a tunnel. A ride plate is connected to the hull and defines a bottom wall of the tunnel. The personal watercraft also has a motor, a jet propulsion system disposed at least in part in the tunnel, and a steering assembly. The deck has a pedestal, left and right gunnels, left and right foot-wells disposed laterally between the pedestal and their respective gunnel, and a rear platform. A straddle seat is disposed on the pedestal. Left and right footrests have left and right standing surfaces facing substantially forward and extending at least partially forward of the tunnel. The left footrest extends laterally between the pedestal and the left gunnel. The right footrest extends laterally between the pedestal and the right gunnel.

Abstract: A valve for use with a vessel drain tube includes a body extending along a longitudinal axis. The body has an outer surface and an inner surface defining a bore extending longitudinally from a first end to a second end. The valve includes an external seal on the outer surface of the body for sealing with the drain tube, at least one internal seal on the inner surface extending into the bore, a retaining member extending at least partially into the bore and being spaced from the internal seal, and a sealing member displaceable between the internal seal and the retaining member. The sealing member is configured to seal with the internal seal in a valve closed, first configuration and to not seal with the internal seal in a valve open, second configuration.

Abstract: A system for stabilizing a vessel, comprising one or more ailerons and a drive device. The aileron is able to move about two axes, one on the longitudinal axis of the aileron substantially perpendicular to the hull at cruising speed and oscillating horizontally at zero speed of the vessel, the other fixed in direction and substantially perpendicular to the first axis and allowing its horizontal oscillation movement. The drive devices give the aileron an inclination movement at cruising speed and a scull movement on the two axes at rest. An electronic computer determines the value of the inclination, whether the vessel be sailing or at rest, and a complementary computer, when the vessel is stopped, generates an alternating movement on the substantially vertical axis and reverses the sign of the inclination calculated by the first computer according to the direction of this movement.

Abstract: A compressed air tank for sinking prevention comprises a compressed air tank having a valve; and an air pocket coupled to the compressed air tank and being filled with air discharged from the compressed air tank when the valve is opened, wherein buoyancy is provided to a cabin that is being flooded through the air pocket to prevent a ship from foundering.

Abstract: Accessory mounting systems for stand up paddle boards are disclosed. In one example, the accessory mounting system includes a mounting plug secured to a stand up paddleboard, a accessory plate secured to the mounting plug, and one or more accessories secured to the accessory plate. In other examples, the accessory plate is provided with an adhesive backing and can be mounted and secured to the stand up paddle board, thereby allowing the accessory mounting system to be used on boards not having mounting plugs and/or at locations where mounting plugs are not present. In yet another example, a mounting track is provided instead of a accessory plate such that one or more accessories, such as fishing rod holder, can be slidably mounted on the stand up paddle board.

Abstract: A distress device of lifejacket includes: a lifejacket main body; a wireless emitter, disposed inside the lifejacket main body and including a circuit board and an antenna, wherein the antenna is electrically connected to the circuit board; and a lithium polymer battery, electrically connected to the circuit board and disposed inside the lifejacket main body. Accordingly, the lithium polymer battery can be adopted to replace a convention lithium battery, so that the distress device of lifejacket can be safety disposed in an aircraft for providing sufficient amount of electricity required by the wireless emitter, thereby allowing the distress device of lifejacket to have an additional function of emitting signals, and the research and rescue team is able to rapidly locate the sufferer, so that the distress device of lifejacket is provided with advantages of increasing operation safety and facilitating the locating procedure for search and rescue.

Abstract: The invention relates to a personal watercraft (100) having a longitudinal axis (X) and comprising: a chassis (102), two rear floats (106) mounted at the rear of the chassis (102) on either side of a symmetry plane of the personal watercraft (100), a foil (116) mounted between the rear floats (106); a movable assembly (150) comprising: a suspension arm (108) that extends in front of the chassis (102), one of the ends of which is mounted so as to be able to rotate on the chassis (102) about a first rotation axis (10), a front float (104) mounted at the other end of said suspension arm (108), and a propulsion means (112) housed in the front float (104), the personal watercraft (100) further comprising a suspension system (114) disposed between the chassis (102) and the movable assembly (150).

Abstract: An apparatus includes multiple tanks each configured to receive and store a liquid refrigerant under pressure. The apparatus also includes one or more insulated water jackets each configured to receive and retain water around at least part of an associated one of the tanks. The apparatus further includes at least one generator configured to receive a flow of the liquid refrigerant and to generate electrical power based on the flow of the liquid refrigerant. The apparatus also includes one or more first valves configured to control the flow of the liquid refrigerant between the tanks and through the at least one generator. In addition, the apparatus includes one or more second valves configured to control a flow of the water into and out of the one or more insulated water jackets.

Abstract: Recreational flotation devices are generally described. The flotation device may comprise inflatable portions of different size that aid a user in achieving a sitting position.

Abstract: The present application is directed to a flotation device for use in aquatic physical therapy. The flotation device preferably comprises side portions that wholly or partly surround the user, and permit the user's elbow(s) and/or forearms to rest upon and be supported thereby. The flotation device also preferably has at least one handgrip permitting the user to easily hold onto and be supported by the flotation device. Additionally, the present invention comprises methods of making and using such a flotation device.

Abstract: An under deck mid cabin entry system for a mono hull boat including an entry console disposed to the side of a center console and providing access to steps extending beneath the main deck. A top step is within the entry console proximate to the front surface and the steps curve towards a central beam of the boat and descend into the mid cabin such that a bottom step proximate to a floor of the mid cabin directs a user into a central area of the mid cabin and terminates to avoid obstructing movement in the central area. The bottom step further defines a landing platform for users of the boat.

Abstract: Embodiments of the present apparatus and method feature a permanently fixed canted keel. The apparatus and method feature tacking maneuvers which shift the sail element and reverse the direction of the hull form.

Abstract: A moving body control device includes a moving body direction sensor, a position sensor, and processing circuitry. The processing circuitry estimates a direction of disturbance. The processing circuitry sets a target position and a starting position. The processing circuitry controls a propulsion generator and a movement direction adjuster such that a heading direction sensed by the moving body direction sensor is opposite to the direction of the disturbance estimated by the processing circuitry, and when the moving body has been drifted at least a specific distance from the target position, the moving body returns to the starting position, and the heading direction at the starting position is opposite to the direction of the disturbance. The processing circuitry changes the starting position based on a distance between the target position and a position of the moving body sensed by the position sensor.

Abstract: A watercraft with a rigid outer hull having a substantially circular shape in plan view and a rounded bottom surface for contacting a body of liquid, and a rigid top surface disposed opposite said bottom surface and integrally formed with the outer hull, the top surface having an annular stability portion with convex walls in cross-section and a recessed flat-bottomed deck portion adapted to receive a person, and an edge of the recessed deck portion being disposed inwardly from an outermost edge of the top portion by a distance, and a method for using same.

Abstract: The instant disclosure pertains to a pontoon boat having various embodiments of an enclosure. Non-limiting exemplary embodiments of the enclosure are configured for habitation.

Abstract: A protective device configured to protect a line-cutting device mounted on a cable towed by a surface vessel comprises a blade holder comprising a blade, the blade being formed in the blade holder and being retractable into a slot about a transverse spring pin, wherein the protective device comprises a weighted body of hydrodynamic overall shape delimiting a transverse opening for the passage of the cable and an interior cavity in which the blade is arranged in such a way as to cut any line caught in the cavity, the protective device free to rotate about the cable.

Abstract: The invention relates to a device for the exploration of the ocean space, intended to be fixed to a boat, the exploration device comprising a support that is able to receive one or more users in a lying position, a deployment means, said deployment means making it possible to position the support in a given position under the water such that, when the support is in said given position under the water, said one or more users can lie down on the support, being partially immersed, and fixing means for maintaining the support in the given position under the water.

Abstract: A bicycle and board apparatus comprising a buoyant board, a front wheel, a rear wheel and a steering member, and being mountable and usable in a first configuration as a bicycle in which the buoyant board is the bicycle's frame and in a second configuration as a surfboard by changing the orientation of the front wheel, the rear wheel or the steering member with respect to the buoyant board.

Abstract: The present disclosure relates generally to knee braces for boats. The knee braces described herein are particularly suitable for use with lightweight, inflatable rafts and kayaks, for example packrafts used in backcountry boating. The knee braces include a fabric body and a plurality of adjustable straps configured to attach the fabric body to a side wall of the boat.