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 invention provides inflatable watercraft that arc light weight, easily stowed in relatively small spaces and formed from inflatable drop stitch panels. A preferred watercraft is a boat having a bow. stem, keel and an open transom for self-bailing. A deck can be provided as a separate panel that is cither permanently, or detachably, connected to freeboard sides of the watercraft. When connected, the deck provides a sitting area, and enhances the strength and rigidity of the watercraft by functioning like a deck beam. Optional features include a bucket held in place by, and fitted through, a hole in the deck panel. Preferred inflation pressures are between 2 and 25 p.s.i.. and more preferably between 12 and 18 p.s.i.

The present invention provides inflatable watercraft that arc light weight, easily stowed in relatively small spaces and formed from inflatable drop stitch panels. A preferred watercraft is a boat having a bow. stem, keel and an open transom for self-bailing. A deck can be provided as a separate panel that is cither permanently, or detachably, connected to freeboard sides of the watercraft. When connected, the deck provides a sitting area, and enhances the strength and rigidity of the watercraft by functioning like a deck beam. Optional features include a bucket held in place by, and fitted through, a hole in the deck panel. Preferred inflation pressures are between 2 and 25 p.s.i.. and more preferably between 12 and 18 p.s.i.

An inflatable kayak constructed of drop-stitch material. When inflated, the drop-stitch members form a rigid, planar structure. To form a non-planar contour in one of the surfaces of a drop-stitch member, the opposing surface is folded over onto itself and a strip of glue along the fold adheres the opposing surface along the glue strip, thereby forming a V-fold extending into the interior of the drop-stitch member. When the member is inflated, the V-fold will alter the profile of the opposing surface and cause the first surface to project away along that profile. The V-fold can be augmented by use of a V-tape or contour member within the V-fold. Using a contour member in the V-fold creates profiles that a fold alone cannot produce.

An inflatable kayak constructed of drop-stitch material. When inflated, the drop-stitch members form a rigid, planar structure. To form a non-planar contour in one of the surfaces of a drop-stitch member, the opposing surface is folded over onto itself and a strip of glue along the fold adheres the opposing surface along the glue strip, thereby forming a V-fold extending into the interior of the drop-stitch member. When the member is inflated, the V-fold will alter the profile of the opposing surface and cause the first surface to project away along that profile. The V-fold can be augmented by use of a V-tape or contour member within the V-fold. Using a contour member in the V-fold creates profiles that a fold alone cannot produce.

The present invention provides inflatable watercraft that are light weight, easily stowed in relatively small spaces and formed from inflatable drop stitch panels. A preferred watercraft is a boat having a bow, stern, keel and an open transom for self-bailing. A deck can be provided as a separate panel that is either permanently, or detachably, connected to freeboard sides of the watercraft. When connected, the deck provides a sitting area, and enhances the strength and rigidity of the watercraft by functioning like a deck beam. Optional features include a bucket held in place by, and fitted through, a hole in the deck panel. Preferred inflation pressures are between 2 and 25 p.s.i., and more preferably between 12 and 18 p.s.i.

The present invention provides inflatable watercraft that are light weight, easily stowed in relatively small spaces and formed from inflatable drop stitch panels. A preferred watercraft is a boat having a bow, stern, keel and an open transom for self-bailing. A deck can be provided as a separate panel that is either permanently, or detachably, connected to freeboard sides of the watercraft. When connected, the deck provides a sitting area, and enhances the strength and rigidity of the watercraft by functioning like a deck beam. Optional features include a bucket held in place by, and fitted through, a hole in the deck panel. Preferred inflation pressures are between 2 and 25 p.s.i., and more preferably between 12 and 18 p.s.i.

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.

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.