A foldable seat back includes a base, a back plate and a bracket. The base defines a positioning groove therein. The back plate is pivoted on the base, allowing the back plate to be positioned in at least one folded up state and a folded down state. The bracket has one end pivoted on a rear side of the back plate, and the other end releasably engaged in the positioning groove of the base to sustain the back plate in the folded up state.

Accessory mounting systems for stand up paddle boards are disclosed. In one example, the accessory mounting system includes a mounting plug secured to a stand up paddleboard, a accessory plate secured to the mounting plug, and one or more accessories secured to the accessory plate. In other examples, the accessory plate is provided with an adhesive backing and can be mounted and secured to the stand up paddle board, thereby allowing the accessory mounting system to be used on boards not having mounting plugs and/or at locations where mounting plugs are not present. In yet another example, a mounting track is provided instead of a accessory plate such that one or more accessories, such as fishing rod holder, can be slidably mounted on the stand up paddle board.

An example inflatable paddle board includes an inflatable stand-up board chamber. The example inflatable paddle board also includes a curve-shaped front hull chamber at least partially overhanging at least a front portion of the inflatable stand-up board chamber. The example inflatable paddle board also includes a tent covering between the inflatable stand-up board chamber and the curve-shaped front hull chamber.

An inflatable watercraft for supporting a user on water includes a flexible water-proof and air-tight bladder having a first end, an opposing second end, a top side, a bottom side, and two opposing lateral sides. The first end is substantially open to expose an interior surface of the bladder and an interior volume of the bladder. A first seal is fixed with the interior surface of the bladder proximate the open first end of the bladder. As such, to inflate the watercraft the user holds the first seal open while scooping air into the bladder until the bladder achieves a substantially inflated configuration. The user then places the first seal in the closed configuration to prevent air from escaping the bladder. Additional seals and means for inhibiting air leaking from the bladder are provided. Multiple forms of watercraft are contemplated.

A swim platform for attachment to a boat includes a rearwardly tapered inflatable body including a top surface capable of supporting a standing person, an outer perimeter including a forward wall, an aft wall, and a port sidewall and a starboard sidewall extending between the forward wall and aft wall. The forward wall is positionable adjacent the transom. The forward wall is longer than the aft wall and is configured not to extend laterally beyond the starboard and port sides at the transom. The swim platform may be left in the water while the boat is moving and is designed not to interfere with the boat's wake.

A swim platform for attachment to a boat includes a rearwardly tapered inflatable body including a top surface capable of supporting a standing person, an outer perimeter including a forward wall, an aft wall, and a port sidewall and a starboard sidewall extending between the forward wall and aft wall. The forward wall is positionable adjacent the transom. The forward wall is longer than the aft wall and is configured not to extend laterally beyond the starboard and port sides at the transom. The swim platform may be left in the water while the boat is moving and is designed not to interfere with the boat's wake.

A foldable seat back includes a base, a back plate and a bracket. The base defines a positioning groove therein. The back plate is pivoted on the base, allowing the back plate to be positioned in at least one folded up state and a folded down state. The bracket has one end pivoted on a rear side of the back plate, and the other end releasably engaged in the positioning groove of the base to sustain the back plate in the folded up state.

The present disclosure provides an inflatable product comprising a wall enclosing an air chamber. A plurality of main tension members and branch tension members are disposed within the air chamber. The main tension members have an upper edge and a lower edge. The branch tension members each include a first connection region and a second connection region each connected to the wall of the air chamber. The branch tension members each include a third connection region located between the first and second connection regions and connected to the upper edge or the lower edge of the main tension member.

The object of the invention is an inflatable watercraft (1) (SUPstand up paddling) with an embedded drive and having a specially shaped recess in the center, preferably in the center of gravity of the watercraft (1), into which a housing (2, 2) of a drive assembly is inserted before the watercraft is filled with air. While the watercraft (1) is filled with air, the air pressure firmly fixes the housing (2, 2) of the drive assembly to a proper position. The housing (2, 2) accommodates the drive assembly that comprises a storage battery (4), an electric motor (5), a compressor (3) and an electronic circuit (8), wherein the drive assembly is provided with a flow-through channel (6), in which a drive screw (7) is arranged, and both the input and the output sides of the flow-through channel (6) are protected by grates.

The surfboard disclosed is a structural assembly of a rigid component forming at least the deck and rails, and a pliant component forming at least some portion of the bottom surface, joined to enclose a hollow volume. By means of a user controlled pneumatic adjustment to the hollow volume, a plurality of bottom contour shapes is available to the surfboard.