An improved wooden surfboard and method of construction comprised of pre-cut layers of wood longitudinally arranged of predetermined thicknesses (502-512) stacked and bonded together following the shape of the surfboard. The longitudinal layers include slots (208) to slide and embed multiple transverse ribs (210) in perpendicular direction for joining the longitudinal layers together. The bonded longitudinal layers form a pre-shaped plank with the geometrical features of the surfboard without the need of carving and shaping the surfboard's geometry. A smooth finish is achieved after a light sanding of the pre-shaped plank. In some embodiments the longitudinal layers have predetermined perforations (202) to create air chambers (204) reducing the weight of the surfboard. Other embodiments are as described and shown.

An improved wooden surfboard and method of construction comprised of pre-cut layers of wood longitudinally arranged of predetermined thicknesses (502-512) stacked and bonded together following the shape of the surfboard. The longitudinal layers include slots (208) to slide and embed multiple transverse ribs (210) in perpendicular direction for joining the longitudinal layers together. The bonded longitudinal layers form a pre-shaped plank with the geometrical features of the surfboard without the need of carving and shaping the surfboard's geometry. A smooth finish is achieved after a light sanding of the pre-shaped plank. In some embodiments the longitudinal layers have predetermined perforations (202) to create air chambers (204) reducing the weight of the surfboard. Other embodiments are as described and shown.

The present invention discloses an electric surfboard with a handrail bracket, including a board body, a bracket being installed at the front end of the board body, a handrail being arranged at the top of the bracket (the height of the handrail can be adjusted), and a remote control holder being arranged at one side of the handrail. The present invention arranges a handrail bracket on the electric surfboard to facilitate the placement of objects such as the remote control, which reduces the difficulty of controlling the surfboard, and facilitates the use.

The present invention discloses an electric surfboard with a handrail bracket, including a board body, a bracket being installed at the front end of the board body, a handrail being arranged at the top of the bracket (the height of the handrail can be adjusted), and a remote control holder being arranged at one side of the handrail. The present invention arranges a handrail bracket on the electric surfboard to facilitate the placement of objects such as the remote control, which reduces the difficulty of controlling the surfboard, and facilitates the use.

A motorized watercraft may include an elongated hull extending along a longitudinal central axis (L) and a propulsion system. The propulsion system may include a drive module. The drive module may be mounted to the elongated hull. The drive module may include a motor and a propelling member. The motor may be in driving connection with the propelling member. A bottom surface of the elongated hull may be provided with a first channel and a second channel that respectively extend along the elongated hull on each side of the longitudinal central axis (L).

A portable inflatable diving float that includes an inflatable float body is revealed. The float body consists of a horizontal portion provided with a left folding area formed on the left side and a right folding area formed on the right side. After the left and the right folding area being folded to a middle portion of the float body, a left edge portion of the left folding area and a right edge portion of the right folding area are connected by a first connection member and kept in the folded state. A flat body formed after deflation of the float body becomes a backpack body with smaller area. At least one strap member is connected between the top end and the bottom end on a front side or a back side of the float body so that users can carry the backpack body on their back.

A wave riding hoard is provided herein that has a body including a top, a bottom, a right edge, a left edge, a front, a rear and a length defined from the front to the rear. The bottom of the body includes one or more steps. A first channel is defined at least partially between the one or more steps. The first channel extends along at least a portion of the length of the body. At least one of the one or more steps extends at least partially around the left edge or the right edge of the body.

The present invention is a Low-Drag Fin and Foil System for Surfboards (10), particularly including cambered fin foils (40; 42). The invention (10) also discloses low-drag, directionally unstable fin positions wherein the lesser of negative angle of attack of a trailing fin (50), versus the higher or positive angle of attack of a forward fin (48), makes the board (12) highly maneuverable by creating a yawing moment that aids the rotation of the board (12) as it is turned. The system particularly utilizes fins (40) having foil (42) shapes in which either the cambered side (74) or the non-cambered side (76) is provided with a combination of a convex curvature (68) and a concave curvature (70) to result in an oscillating curvature (72) which has a positive effect on control and acceleration.

A break resistant composite stringer system for a sports board includes an elongated stringer body. An upper U channel is fibrous and includes an upper U channel right flange and an upper U channel left flange. The upper U channel right flange is vertically oriented and the upper U channel left flange is vertically oriented. An inside surface of the upper U channel is bonded to the stringer right surface, the stringer top surface, and the stringer left surface. A lower U channel is fibrous and includes a lower U channel right flange and a lower U channel left flange. The lower U channel right flange is vertically oriented and the lower U channel left flange is vertically oriented. An inside surface of the lower U channel is bonded to the stringer right surface, the stringer bottom surface, and the stringer left surface.

A break resistant composite stringer system for a sports board includes an elongated stringer body. An upper U channel is fibrous and includes an upper U channel right flange and an upper U channel left flange. The upper U channel right flange is vertically oriented and the upper U channel left flange is vertically oriented. An inside surface of the upper U channel is bonded to the stringer right surface, the stringer top surface, and the stringer left surface. A lower U channel is fibrous and includes a lower U channel right flange and a lower U channel left flange. The lower U channel right flange is vertically oriented and the lower U channel left flange is vertically oriented. An inside surface of the lower U channel is bonded to the stringer right surface, the stringer bottom surface, and the stringer left surface.