Systems and methods to allow a user to be both towed by and control a personal flotation craft from behind and underneath while engaging in underwater exploration comprising one or more propulsion devices, an optionally foldable tow shaft and one or more directional controllers. Wherein the systems and methods may further comprises one or more remotely controllable speed modulators, controlled by a user from behind and underneath the personal flotation craft, while engaging in underwater exploration.

This invention relates a removable seat for watercraft 10 of the type having a hull or underside 13 and a deck 14, and wherein the deck is connected to the hull by side portions or rails 15, and said deck includes retaining means in the form of one or more recesses 20 formed in or attached to the deck. The seat includes a seat base 112 and a backrest 111, and anchoring means 130 connected to structural means supporting said backrest, said anchoring means extending generally away from a lower portion of said backrest and a rear portion of said seat base, and wherein said anchoring means is locatable within a respective one of the retaining means 20. The seat is retained in an operative attitude by first releasable securing means connected to an upper part of said backrest and connectable to a location on the deck or the rails generally forward of the seat, and second releasable securing means connected to an upper portion of said backrest and connectable to a location on the deck or the rails generally rearward of said seat.

A sailboat, preferably with constrained sail, comprising a hull (22) extending along a main extension direction (X) with a lower surface (23), designated to be partly or fully submerged in water, and an upper surface (24), suitable to accommodate a helmsman (51) in a lying down position and having the head on the backrest (53, 27), a sail (55) fixed on a mast (54) along which axis (Z) extends, characterised in that said mast (54) is engaged in a support (56) directly fixed to the hull (22) and in that said hull (22) hasalong the edges thereof, which extend along the axis (X), an ansa lunata (25) and an ansa lunata (26), respectively, each of which extend along the axis (Y).

A sailboat, preferably with constrained sail, comprising a hull (22) extending along a main extension direction (X) with a lower surface (23), designated to be partly or fully submerged in water, and an upper surface (24), suitable to accommodate a helmsman (51) in a lying down position and having the head on the backrest (53, 27), a sail (55) fixed on a mast (54) along which axis (Z) extends, characterised in that said mast (54) is engaged in a support (56) directly fixed to the hull (22) and in that said hull (22) hasalong the edges thereof, which extend along the axis (X), an ansa lunata (25) and an ansa lunata (26), respectively, each of which extend along the axis (Y).

The drive module buoyancy body is either made as a solid material, inflatable or as a hollow body with inflatable air chambers inside, which includes a seat and a shaft mounted in a front portion and extending in a direction transverse to the longitudinal direction of the buoyancy body. Paddle wheels are mounted at the ends of the shaft. A profile is articulated to the shaft in its center so as to be able to pivot about its lower end region, which profile extends upwards from the shaft and in which a crankshaft with a drive wheel is mounted at the upper end region of the profile. The cranks of the crankshaft can be optionally equipped with pedals for a foot drive or crank handles for a hand drive. By driving the cranks, the paddle wheels are driven by a roller chain or a toothed belt, the profile (7) being able to be engaged in a pivoted position for foot drive and being able to be engaged in a position different therefrom for manual drive.

The drive module buoyancy body is either made as a solid material, inflatable or as a hollow body with inflatable air chambers inside, which includes a seat and a shaft mounted in a front portion and extending in a direction transverse to the longitudinal direction of the buoyancy body. Paddle wheels are mounted at the ends of the shaft. A profile is articulated to the shaft in its center so as to be able to pivot about its lower end region, which profile extends upwards from the shaft and in which a crankshaft with a drive wheel is mounted at the upper end region of the profile. The cranks of the crankshaft can be optionally equipped with pedals for a foot drive or crank handles for a hand drive. By driving the cranks, the paddle wheels are driven by a roller chain or a toothed belt, the profile (7) being able to be engaged in a pivoted position for foot drive and being able to be engaged in a position different therefrom for manual drive.

The invention involves a paddleboard kit for converting any water sports board such as a surfboard into a paddleboard. An oar support assembly, typically secures oars with pivotal paddles to the board; facilitating rowing exercises that may be practiced while kneeling or standing. During use, the pivotable paddles pivot in such a way that the blade portion holds a steady position in relation to a shaft portion on the power stroke, whilst being free to fold in the opposite sense on the idle stroke when each stroke is executed as a substantially axial thrust of the shaft. The oar support assembly secures the pair of oars and is itself secured to the board by way of board couplers adjustably coupled to a portion of a strap that tightens to snuggly wrap around the board.

A sports board includes a board body, a seat back and a pair of pedals. The seat back is arranged on a top surface of the board body for a user's back to lean on. The pedals arranged on the top surface of the board body for the user's feet to against the pedals.

A board paddling training apparatus for assisting in improving a user's paddling technique and strength. In particular, the board paddling training apparatus includes a buoyant board, such as a board adapted for surfing, bodyboarding, paddleboarding, or other board-related sport that entails paddling, and includes a resistance mechanism that creates drag or resistance against a user's paddle stroke. Some implementations of the resistance mechanism can be adjustable in order to create a variety of resistance against the user's paddle stroke and board movement.

A convertible inflatable stand-up paddle board includes a main body member defining a first aperture and optionally a second aperture, and one or more panels fixed to the main body member and covering a bottom end of the apertures. A foldable seat assembly is disposed in the first aperture, and a second seat assembly is disposed in the second aperture. The seat assemblies have a seat portion and a backrest portion. The backrest portion is movable between (i) a folded position wherein a surface of the backrest portion and an upper surface of the main body member define a standing surface for the stand-up paddle board, and (ii) an upright position wherein the backrest portion extends away from the seat portion. The stand-up paddle board is thereby convertible between a stand-up configuration and a sit-down configuration.