Abstract: Water walking skis and a method for boarding them, in which each ski has an elongated body with a bow end in the form of a monohull and a stern end in the form of a twin hull. The skis can be combined with a pair of poles for balance, and binding straps for binding the skis and poles together while boarding/reboarding. The deck of each ski typically has a recessed area for foot placement, and two parallel side extensions protrude downward from the deck. The side extensions, the deck, and an underside or bottom cover together form a tunnel within the ski, the tunnel having a screen-covered first opening for admitting water and a rear opening for expelling water. Traction gates are mounted within the tunnel and spaced apart therein for permitting water flow therethrough when the ski moves forward, while preventing water flow when moving in the reverse direction.

Abstract: Various implementations include a seat assembly having one or more track brackets, one or more slide brackets, and a seat bottom. A track face of each of the track brackets defines one or more tracks. A first end of each of the tracks is closer than a second end of the respective track to a fore edge and a bottom edge of the track bracket. The slide brackets include one or more pins slidably engaging one of the tracks. The slide brackets are slidable between a first slide position and a second slide position. At least one of the pins is located adjacent the first end of the track in the first slide position and one of the pins is located adjacent the second end of the track in the second slide position. The seat bottom is coupled to the slide brackets.

Abstract: The utility model discloses a marine mounting part, and relates to the field of a marine accessory. A main body thereof is a mounting part, and the mounting part is provided with a mounting base and an accessory mounting portion, characterized in that the mounting base is provided with a quick connector, and the mounting base and the accessory mounting portion are movably connected through the quick connector. The quick connector is easy and flexible to operate, and the mounting base and the accessory mounting portion are connected through the quick connector, so that the user can easily and quickly dismount and replace the accessory mounting portion.

Abstract: A vessel hull stabilization system includes a housing having a rotatable shaft mounted thereto, the shaft configured to connect to a fin such that the fin is located on an outside of the vessel hull and the housing is located on an inside of the vessel hull. A drive system is mounted to the housing and includes a motor and a drive element. The motor is connected to a central shaft of the drive element. The drive element includes a plurality of teeth positioned between the outer element and the central shaft such that when the motor rotates the central shaft, the plurality of teeth oscillate inwards and outwards to interact with teeth in the outer element and thereby cause rotation of a fin shaft connected to the outer element or to the gear having the oscillating teeth. A controller receives sensor readings to determine control signals to send to the motor(s) to impart rotation of the fin.

Abstract: A robotic fish comprises one or more torque reaction engines and a fish body, wherein the torque reaction engine cyclically oscillates and causes a wave to propagate across the fish body, including through a flexible wing, accelerating thrust fluid and propelling the robotic fish.

Abstract: A pontoon boat includes port and starboard pontoons and cross members connecting the pontoons. A shock absorber may be installed at each point of connection of the pontoons to the cross members. A cross member may be embodied as a double-webbed beam having first and second parallel flanges and first and second webs disposed between and connected to the flanges. Each pontoon may include a two-stage lifting strake having a first surface and a second surface inclined from the first surface.

Abstract: Some embodiments may be of spearfishing apparatus fitted with at least one magnet configured to repel sharks away from the spearfishing apparatus. The spearfishing apparatus may be one or more of: a spearfishing shaft, a spearfishing tip, and/or a spearfishing gun. Such magnets may be electromagnets powered by batteries in some embodiments.

Abstract: Systems and methods are provided for lifting and stowing water-borne vessels. The systems and methods can be used, for example, to lift a small vessel, such an inflatable dinghy, onto a larger water-borne vessel equipped with an outboard motor; and to stow the dinghy above the outboard motor. The systems and methods permit the dinghy to be lifted out of the water from a position behind the larger vessel, with any need to remove, disassemble, or move the outboard motor.

Abstract: A marine vessel and method for carbon capture and sequestration are described. The marine vessel includes a buoyant hull, a cryogenic storage tank within the hull, and a gaseous carbon dioxide loading manifold. The marine vessel also includes a carbon dioxide liquefaction system in fluid communication with the cryogenic storage tank downstream of the carbon dioxide liquefaction system and with the gaseous carbon dioxide loading manifold upstream of the carbon dioxide liquefaction system. Finally, the marine vessel includes a carbon dioxide supercritical system in fluid communication with the cryogenic storage tank. In operation, the marine vessel moves between multiple locations, where gaseous carbon dioxide is onboarded, liquified and stored. Thereafter, the marine vessel transports the liquified carbon dioxide to a location adjacent an offshore geological reservoir.

Abstract: A life jacket includes a main body defining a neck opening, a left arm opening and a right arm opening. The life jacket further includes at least one strip of reflective material; at least one lighting element electrically coupled to a power source; and at least two illuminating regions arranged on the main body. For each of the at least two illuminating regions, the at least one strip of reflective material forms a perimeter thereof and surrounds at least one of the at least one lighting element. The at least one of the at least one lighting element is configured to emit light rays to illuminate the respective area surrounded by the at least one strip of reflective material.

Abstract: A docking or mooring system for a boat includes a horizontal shaft mounted with respect to a structure at which docking the boat may be desired. The system also includes at least one hitch mounted forward of the bow of a boat and defining a tapering recess configured to receive the shaft. The shaft is spring biased at a predetermined height but is selectively movable vertically. The hitch includes a latching mechanism with cams that automatically engage the shaft using the forward motion of the boat.

Abstract: The present disclosure generally relates to a joystick device (100) operable to provide speed, direction and steering commands for controlling a marine vessel (300). The present disclosure also relates to a marine propulsion control system controlling a set of propulsion units (308, 310, 312 and 314) carried by a hull of a marine vessel (300), wherein the marine propulsion control system is adapted to receive an input command from such a joystick device (100).

Abstract: A water mat for a boat and a boat. The boat may be a pontoon boat. The water mat may include a cut-out. The cut-out may be formed in a forward side of the water mat, with the forward side of the water mat is connected to the stern of the boat such that the outboard motor is positioned in the cut-out of the water mat. A flexible connecting sheet, that is configured to connect the water mat with the boat, may be attached to a connection side of the water mat and extend along the connection side of the water mat.

Abstract: Varying implementations of adjustable marine fender holders are disclosed, which may receive a length of rope and hold it in place so that a marine fender may be adjusted to a desired height and then fixed in place without having to untie or retie the length of rope. Holders include a friction fit feature for engaging with a nautical cleat, and a rope channel through which a rope may be passed so that a proximal end of the rope may be wedged into a set of teeth or ridges to hold the rope in place. Another holder includes a single wedged arm that may be wedged underneath a cross bar of a cleat. Yet another holder includes a collapsible friction pad that may be wedged into a cleat. Yet another holder includes a compressible friction pad that may be wedged into a cleat.

Abstract: A mount for a trolling motor pivots the trolling motor between a deployed position and a stowed position. The mount includes a base coupled to a deck of a watercraft and upper and lower arms pivotably coupled to the base. A bracket also couples the upper arm to the lower arm. The mount includes a pivotable latch and an associated latch blocker on the upper or lower arm or the base and a corresponding striker pin configured to engage with the pivotable latch in the deployed and/or stowed position of the trolling motor to lock the upper or lower arm to the base.

Abstract: A deck extender for a personal watercraft can include a deck member supported in a cantilevered configuration over an edge of the deck of the personal watercraft. The deck extender can include mounting sleeves fixed to an upper deck of a personal watercraft with mounting tabs of the deck member received within the mounting sleeves. The deck member can include mounting mechanisms having a receptacle and a pivoting cleat mounted above the receptacle configured for mounting accessories to the deck member. The deck member can have recessed channel members for mounting accessories.

Abstract: Semi-submersible wind turbine platforms capable of floating on a body of water and supporting wind turbines, and a method of manufacturing the semi-submersible wind turbine platforms from advanced cementitious composite material are provided. The method includes determining at a first iteration topological outputs of the wind turbine platform including a plurality of modular sections consisting of an advanced cementitious composite (ACC) material, obtaining a second iteration from the topological outputs, the second iteration including a second model platform and a second model tower of the wind turbine platform, and obtaining addition iterations via simulation to attain a final model platform and a final model tower, the final model platform and the final model tower including a layout of the plurality of modular sections and connections for a platform and a tower of the wind turbine platform.

Abstract: The present invention disclosed a paddle, which includes a blade and a hollow lower shaft that connects to the blade. The hollow lower shaft is capable of receiving a rod and an upper shaft capable of entering and moving within said lower shaft; with one end of the upper shaft connected to the rod and able to move simultaneously with the upper shaft within the lower shaft. Wherein, the material of the rod within the hollow lower shaft is different from that of the hollow lower shaft, and the paddle is less likely to break instantaneously.

Abstract: A double-chambers inflatable kayak, including an upper chamber and a lower chamber which are fixedly connected to each other by a connecting portion and between which a cavity is formed, wherein the upper chamber includes a cockpit hole and a first air valve provided on the surface, the cockpit hole being in communication with the cavity, and the first air valve being used to inflate and deflate the upper chamber, and wherein the lower chamber includes a second air valve which is used to inflate and deflate the lower chamber.

Abstract: Water rescue of an individual whether they be a man overboard (MOB) from a boat or someone close to shore requiring a water rescue by shore lifeguards, can easily become a dangerous and life-threatening situation within a few seconds. The current invention offers a Compact Powered Rescue Apparatus (CPRA), a lightweight and compact powered watercraft that can be deployed from a moving boat in just seconds thanks to an innovative CO2 inflation system. CPRA can be stowed on-board a vessel and automatically inflated in just seconds much like the compulsory life-raft or pre-inflated and ready to deploy immediately from shoreline lifeguard stations. CPRA is a powered watercraft based on U.S. Pat. No. 5,643,029 Motorized Surf Boots (Powered Waterskis), a recreational watercraft. However, in this case the craft is made inflatable, configured with a portable stretcher for water search-and-rescue operations, and driven by battery powered electric marine thrusters.