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: 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: Embodiments are directed to a hybrid frame boat. The hybrid frame boat may include a cover and a drop-stitch port bladder, a drop-stitch starboard bladder, and a keel beam that may each couple to the cover. The cover may have an aft end portion, a forward end portion, a port side, a starboard side, a longitudinal length extending from the aft end portion to the forward end portion. The drop-stitch port bladder may extend along one or more portions of the port side of the cover. The drop-stitch starboard bladder may extend along one or more portions of the starboard side of the cover. The keel beam may extend along one or more portions of the longitudinal length of the cover between the drop-stitch port bladder and the drop-stitch starboard bladder.

Abstract: A stand-up paddle board and nosecap are disclosed. The stand-up paddle board is made using drop-stitching and in inflatable. The nosecap is made using injection molding techniques and is relatively rigid. The nosecap is attached to the stand-up paddle board and provides the board with a displacement hull to more easily move through the water.

Abstract: A removable sail for a paddle-style boat, such as a kayak preferably takes the form of a fast deploying down-wind sail attachable to a deck of the kayak. The sail includes a curved, but non-circular shaped flexible material coupled to a collapsible, continuous frame member, for example the frame member may be sewn into a channel made by the material. When mounted to the deck of the boat, the sail may be arranged in a deployed or a stowed configuration, the latter being deployable on the fly in that the sail can be quickly sprung into the deployable configuration. The non-circular shape of the sail cooperates with a hull shape of the boat while providing a sufficient surface area for capturing wind energy. The sail may also include a transparent region that helps prevent excessive amounts of spray from striking the paddler and yet still provides an adequate viewing range.

Abstract: An inflatable stand up paddleboard having a top surface for supporting a user and a bottom surface for residing on water. The inflatable stand up paddleboard being characterized as having a front end and back end and a longitudinal axis passing between the front and back ends. The inflatable stand up paddleboard is configured to receive at least one beam for stiffening the inflatable stand up paddleboard positioned substantially parallel to the longitudinal axis.

Abstract: A hybrid inflatable kayak is configured to rival the handling and speed of skin-on-frame or hard-shell kayaks, while simplifying the assembly and disassembly process. The hybrid inflatable kayak includes an internal frame assembly that cooperates with inflatable bladders and inflatable thwarts giving the kayak an improved watershed capacity and also an improved combination of weight, stability, speed, structural strength, and portability. The internal frame assembly includes a bow rib, a stern rib, and a number of frame members that attach together and extend lengthwise from bow to stern. Front and rear thwarts are inflatable and urge against the frame members and side bladders to put the frame members in tension, make the outer cover sufficiently taut, and provide a faster and more structurally robust design.

Abstract: A stiffening spine for use in a selectively inflatable kayak. Inflatable kayaks are characterized as having an elongated pneumatically inflatable peripheral tubes which, when inflated, define a passenger compartment and relatively narrow bow and stem sections. A flexible cover extends between and at least partially encases the elongated pneumatically inflatable peripheral tubes to provide a floor for the kayak. A spine for stiffening the inflatable kayak is provided in the form of a relatively rigid longitudinal member and end caps fitted to both ends thereof. The longitudinal member is sized to be removably inserted within the flexible cover so that when installed, the end caps are positioned proximate the bow and stem sections of the inflatable kayak.