Abstract: A hydrofoil watercraft, in particular, a hydrofoil board is described herein. The hydrofoil board may comprise one or more of a body, a hydrofoil assembly, and/or other components. The body may have one or more of a deck surface configured to support a rider, a bottom surface opposite the deck surface, and/or other surfaces and/or features. The body may comprise a fore portion having a planing surface forming part of the bottom surface. The body may have an aft portion having an aft bottom surface forming part of the bottom surface. The fore portion may be toward a front end of the board. The aft portion may be toward a rear end of the board. An aft cross-sectional thickness between the deck surface and the aft bottom surface may be less than a fore cross-sectional thickness between the deck surface and the planing surface.

Abstract: Described is an acceptor/adapter device for securing an outboard jet motor to a watercraft. The acceptor/adapter comprises a shrouded opening for communication with an intake of the outboard jet motor. Sidewalls of the acceptor/adapter device can form a tunnel, wherein the tunnel is configured for directing a flow of water through the tunnel, into the adapter/acceptor device, and into the intake of the outboard jet motor. Also described is a hull with a tunnel for directing a flow of water to an intake of an outboard jet motor, as well as a directional device which allows for vertical or horizontal adjustments to the jet output or reversing the jet output.

Abstract: A mooring device including: a strut with a first end and a second end; a first head; a pivot mount; a first suction cup; a rotating mount; a second head; a second suction cup; a rod; and a flotation cover sleeve. The pivot mount allows the first head to pivot about a first head axis and therefore to rotate relative to the strut. The rotating mount allows the suction cup to rotate about a second axis relative to the strut. The flotation cover sleeve having a buoyancy sufficient to render the entire apparatus positively buoyant in water.

Abstract: A mooring device including: a strut with a first end and a second end; a first head; a pivot mount; a first suction cup; a rotating mount; a second head; a second suction cup; a rod; and a flotation cover sleeve. The pivot mount allows the first head to pivot about a first head axis and therefore to rotate relative to the strut. The rotating mount allows the suction cup to rotate about a second axis relative to the strut. The flotation cover sleeve having a buoyancy sufficient to render the entire apparatus positively buoyant in water.

Abstract: A fender davit device is disclosed. The fender davit device in accordance with an aspect of the present disclosure includes a fender and a davit comprising a hauling line holding the fender and a winch configured to move the fender by winding or unwinding the hauling line. The fender davit device also includes a hauling line tension maintaining part configured to maintain a tension of the hauling line holding the fender to prevent the hauling line from breaking.

Abstract: A personal watercraft includes a watercraft body including a deck. The deck includes a side-opening storage recessed inward to accommodate items. The side-opening storage has an opening facing outward in a width direction of the watercraft body.

Abstract: An apparatus that facilitates search and rescue, for example, in open water. The apparatus comprises a substrate with a particular geometry and a perimeter. The apparatus further comprises a cover positioned atop the substrate with the cover also having a particular geometry and perimeter, which correspond to the geometry and perimeter of the substrate. An air-tight seal seals the substrate perimeter to the cover perimeter and creates a sealed internal region. A breakable vessel holding an activator is located in the sealed internal region, along with illuminable dyes that are also located in the sealed internal region. When the breakable vessel is broken, the activator reacts with the illuminable dyes and illuminates the illuminable dyes.

Abstract: A small planing watercraft with an imaging device includes: the imaging device incorporated in the small planing watercraft, and capturing an image of surroundings of the small planing watercraft; and a display device incorporated in the small planing watercraft at a location where the display device is recognizable by an operator of the small planing watercraft, and displaying the image of surroundings captured by the imaging device.

Abstract: A hull assembly for a pontoon boat includes a hull extending in a longitudinal direction between a front end and a rear end. A first thruster assembly is attached to a first lateral side of the hull. A second thruster assembly is attached to a second lateral side of the hull. The first and second thruster assemblies include respective thrust units that are each movable between a deployed position and a stowed position.

Abstract: A straddle seat assembly having a backrest and a straddle seat is disclosed. The straddle seat has a base structure that has an upper surface to which a resiliently deformable top portion is connected. The resiliently deformable top portion covers at least partially the upper surface. The backrest is selectively connected to the resiliently deformable top portion at either one of at least two positions along a length of the straddle seat such that deformation of the top portions permits movement of the backrest. A personal watercraft having the straddle seat assembly is also disclosed.

Abstract: A vascular anastomosis device includes a vascular fastener having a first ring and a second ring, and a vascular fastening mechanism. The first ring is provided a first groove and the second ring is provided with a first projection. In addition, the vascular fastener is disposed in the vascular fastening mechanism. The vascular fastening mechanism includes a first tube, a vascular supporting unit, an advancing ring, a third tube, and a spreading unit. The first tube is connected with a second tube. The vascular supporting unit is disposed in the second tube. Furthermore, the vascular supporting unit includes a vascular supporting body and a vascular spreader assembled on the vascular supporting body. The first ring, the second ring, and the advancing ring are assembled on the second tube. The third tube is disposed in the first tube. The spreading unit is disposed in the third tube.

Abstract: A motion damping system includes a tank compartmentalized to have a first compartment having a first opening, a second compartment having a second opening, and a third compartment disposed between the first and second compartments. The third compartment is in fluid communication with the first and second openings. A first piston is movably sealed within the first compartment and is in fluid communication with its first opening. A second piston is movably sealed within the second compartment and is in fluid communication with its second opening. A liquid fills the third compartment, a portion of the first compartment up to the first piston, and a portion of the second compartment up to the second piston. A coupling fixedly attached to the first and second pistons moves in correspondence with the first and second pistons. Motion damper(s) coupled to the coupling resist movements of the first and second pistons.

Abstract: Techniques are disclosed to enable a system for controlling the propulsion and steering of a boat by a boat operator. The boat has at least one propulsion and steering motor assembly connected to the boat with a propeller, and a propulsion motor. It also has left and right pivoting pedals to provide a signal that controls the angle of the propeller so that if the left pedal is pivoted in a first pivot direction by a first percentage and the right pedal is pivoted in a second pivot direction by a second percentage, the boat executes a turn, moves forward, or moves in reverse.

Abstract: Watercraft docking apparatus including a spreadable clamp attachable to a watercraft to be docked, an elongated pole attached at one end to the spreadable clamp, and structure attaching mechanism attached to an opposite end of the elongated pole. The spreadable clamp and the structure attaching mechanism are both designed to prevent lateral horizontal movement of the elongated pole.

Abstract: A wave attenuator system for protecting a floating dock or other structure from incoming wake created by wind or vessel is disclosed herein, in various aspects. The wave attenuator system may include a substantially rectangular curtain made of a water-impermeable flexible material, in various aspects. The curtain top edge may be secured along the length of at least one of the sides of a dock, in various aspects. The curtain bottom edge may be suspended in a body of water a predetermined distance below the water surface, in various aspects. The bottom edge may include a weighted material to maintain the curtain in a substantially vertical orientation, in various aspects. The wave attenuator system is operable to redirect waves impacting the curtain downward to reduce wave action against the dock or other structure, in various aspects.

Abstract: Disclosed is a floating island construction method for overall transplantation of sandy soil plants, the method comprising the following steps: separation from a surrounding soil body; construction of a buoyancy tank device (13); and waterproof construction, so as to construct a plant floating island from plants to be transplanted in a reservoir area. The floating island protects all the root systems of the plants and most of the undisturbed soil, improves the survival rate, preserves the unique landscape of an original habitat, and can be constructed at the same time as water conservancy project construction, which saves on the construction period, saves costs, and is convenient for on-site overall scheduling.

Abstract: The present invention discloses a wheel structure and a kayak using the same, relating to the field of ships.

Abstract: A pulley system for tying a boat to an anchor comprising a block and tackle assembly and a jammer. The block and tackle assembly has a plurality of pulleys arranged on a first bracket and a second bracket, and a first rope strung sequentially through each of the pulleys, ending with a last pulley. The jammer is coupled to the second bracket and has a channel and a jammer exit at the end of the channel. The last pulley, the channel, and the jammer exit are configured to create a tortuous path for the rope through the second bracket. The channel may be misaligned with the last pulley. A swivel and a rope clip may be coupled to the block and tackle assembly. The swivel is configured to rotate at least 360 in either direction. The rope clip is configured to allow for quick tightening of the pulley system.

Abstract: A directed thrust propulsion system has a central hub and at least three blades that extends outward at a rake angle between about 20 to 70 degrees. Each blade is shaped as a portion of a cylindrical surface, in which concave side forms the blade face and is facing in direction of thrust generated by rotating the hub. The convex side of the blades minimizes drag in the water that resists forward motion while the concave shape and tilted end portions directs the thrust inward toward the extension of the hub's principal axis rearward. The directed thrust propulsion system may be deployed on inboard and outboard motors for all manner of watercraft to increase efficiency above 10 knots speed.

Abstract: An inflatable watercraft of the kayak type including a hull including: a longitudinal bottom comprising a central longitudinal edge and two lateral longitudinal sides, so as to have a V-shaped cross section, the bottom comprising at least one inflatable shell, and a stiffening upper structure comprising two lateral longitudinal inflatable shells and at least one transverse element mounted between the two lateral inflatable shells, each lateral inflatable shell being mounted on one of the lateral longitudinal sides of the longitudinal bottom, in which each of the two lateral inflatable shells comprises two superimposed walls, each of said walls including a textile mat and being connected together by a multitude of connecting threads distributed over the entire surface of said mats while forming a structure suited to be inflated to a pressure capable of stiffening said structure.