The present disclosure provides an inflatable kayak. The inflatable kayak includes an inflatable floor having two ends defined upward; two inflatable gunwales arranged on the left and right sides of the inflatable floor, the height of the upper edge at both ends of the inflatable gunwale being higher than the height at the middle of the inflatable gunwale, allowing the height of the prow and the stern of the inflatable kayak to be no less than the height at the middle of the inflatable kayak; and a reinforcing assembly including a bottom reinforcing layer, a prow hatchway cover, and a stern hatchway cover, the bottom reinforcing layer at least covering the joints of the inflatable floor and the two inflatable gunwales. The prow hatchway cover connects the two inflatable gunwales at the prow, and the stern hatchway cover connects the two inflatable gunwales at the stern.

The present disclosure provides an inflatable kayak. The inflatable kayak includes an inflatable floor having two ends defined upward; two inflatable gunwales arranged on the left and right sides of the inflatable floor, the height of the upper edge at both ends of the inflatable gunwale being higher than the height at the middle of the inflatable gunwale, allowing the height of the prow and the stern of the inflatable kayak to be no less than the height at the middle of the inflatable kayak; and a reinforcing assembly including a bottom reinforcing layer, a prow hatchway cover, and a stern hatchway cover, the bottom reinforcing layer at least covering the joints of the inflatable floor and the two inflatable gunwales. The prow hatchway cover connects the two inflatable gunwales at the prow, and the stern hatchway cover connects the two inflatable gunwales at the stern.

The invention relates to a drop-stitch element in which at least one adhesive fold (9, 10) of variable depth is introduced into a flat drop-stitch component (8) such that the outer skin of the drop-stitch component can be folded on one side of the drop-stitch component or, according to the position of the fold, alternately on both sides of the drop-stitch component.

A fin mount for an inflatable watercraft is an apparatus used as a universal fin box that connects a variety of fins. The apparatus includes a clamp and a fin. The clamp mounts the fin into a fin box-receiving hole of an inflatable watercraft. The clamp includes a lower press, an upper press, and a length-adjustable fastener. The lower press and the upper press seal the fin box-receiving hole. The lower press and the upper press tighten together with the length-adjustable fastener. The lower press and the upper press tensionably tether to each other by the length-adjustable fastener. The apparatus further includes a fin-attachment mechanism that secures the fin into the lower press. The fin removably attaches into a fin-receiving slot of the lower press. The apparatus further includes a plurality of lower counterforts and a plurality of upper counterforts which structurally reinforce the lower press and the upper press.

A fin mount for an inflatable watercraft is an apparatus used as a universal fin box that connects a variety of fins. The apparatus includes a clamp and a fin. The clamp mounts the fin into a fin box-receiving hole of an inflatable watercraft. The clamp includes a lower press, an upper press, and a length-adjustable fastener. The lower press and the upper press seal the fin box-receiving hole. The lower press and the upper press tighten together with the length-adjustable fastener. The lower press and the upper press tensionably tether to each other by the length-adjustable fastener. The apparatus further includes a fin-attachment mechanism that secures the fin into the lower press. The fin removably attaches into a fin-receiving slot of the lower press. The apparatus further includes a plurality of lower counterforts and a plurality of upper counterforts which structurally reinforce the lower press and the upper press.

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.

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.

The present disclosure features inflatable kayaks that have a non-planar hull bottom surface. The kayaks may include an inflatable, tubular body having a bow, a stern and a midsection, wherein opposed side tubes of the midsection define an open central seating area having a predetermined width when the tubular body is inflated; and a hull bottom fabric joined to a lower surface of the body outside of a periphery of the seating area, the hull bottom fabric having a width that is greater than the width of the central seating area such that the hull bottom fabric is not tensioned between the side tubes, and the hull bottom fabric being joined to the side tubes outboard of a vertical center line of the side tubes.

The present disclosure features inflatable kayaks that have a non-planar hull bottom surface. The kayaks may include an inflatable, tubular body having a bow, a stern and a midsection, wherein opposed side tubes of the midsection define an open central seating area having a predetermined width when the tubular body is inflated; and a hull bottom fabric joined to a lower surface of the body outside of a periphery of the seating area, the hull bottom fabric having a width that is greater than the width of the central seating area such that the hull bottom fabric is not tensioned between the side tubes, and the hull bottom fabric being joined to the side tubes outboard of a vertical center line of the side tubes.

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.