A surfboard with an electric drive (2), a battery for the electric drive (2), said battery being arranged in a battery housing (3), a first recess (4) for the battery housing (3), and a handle (5) on the battery housing (3), wherein the handle (5) is designed as a bracket handle which is mounted pivotably around a respective centre of rotation (21) at each of the handle ends on opposite sides (6) of the battery housing (3), and in each case a lug (9) protrudes from the base side of the recess below the centres of rotation (21) inside the first recess (4), and at each handle end of the bracket handle a second projection (33) is formed, which has a curved edge (34) and which rests on the lug, and a distance between a contact point of the curved edge (34) with the lug (9).

The invention relates to a method for constructing and/or manufacturing a water sports device (2) which has a modular structure comprising a floating body (4). The modules can be connected together via interfaces and are connected during operation. In particular, the invention relates to a method for constructing and/or manufacturing a foilboard or driver propulsion vehicle, wherein a server device is provided, and a program-controlled input interface is provided for user-defined inputs on a terminal (5), in particular a mobile terminal, which is arranged at a distance from the server device in particular. The modules are imaged in a computer program of the server device and/or of the terminal (5), and at least one outer contour of the floating body (4) of the water sports device (2) can be, in particular, freely defined by the user. On the basis of the outer contour of the floating body (4) defined in the program, automated manufacturing information is produced, and the floating body (4) manufactured according to the production information can be combined with another module, in particular multiple other modules, to produce the water sports device (2). The invention also

A wing, buoyant in water has an upper wing surface comprising a deck upon which a rider stands, and, the wing is in water. A foot constraint proximate the wing leading edge and fixedly attaching the wing projects outwardly from the deck to release-ably receive the rider's forward foot. With the rider standing with both feet upon the deck, and the rider's forward foot ensconced within the foot constraint, and with the rider's aft foot proximate a trailing edge of the wing, the rider bodily heaves and pitches the wing to obtain a chordwise forward velocity thru the water. The forward foot constraint enables the rider to upheave the wing. A second foot constraint may attach the deck proximate the wing trailing edge. Another foot constraining system is comprised as a frictional device broadly applying the deck, and, may be used in addition to or in lieu of other constraints.

A board for a water sport comprises a front surface, a back surface, an upper surface between the front surface and the back surface, a first recess proximate the front surface and within the upper surface, the first recess comprising one or more attachment means for removably attaching a training device to the upper surface, and a second recess proximate the back surface and within the upper surface, the second recess comprising one or more additional attachment means for removably attaching a guidance device configured to facilitate at least partial control of the board. Related sets and boards for water sports are also disclosed.

A board for a water sport comprises a front surface, a back surface, an upper surface between the front surface and the back surface, a first recess proximate the front surface and within the upper surface, the first recess comprising one or more attachment means for removably attaching a training device to the upper surface, and a second recess proximate the back surface and within the upper surface, the second recess comprising one or more additional attachment means for removably attaching a guidance device configured to facilitate at least partial control of the board. Related sets and boards for water sports are also disclosed.

An enhanced kiteboarding system is disclosed, combining at least a footboard and a kiteboard. The footboard has a protruding ridge incorporated therein, and also has one or more BTLE-grain(s) embedded therein. The footboard may also have a safety beacon embedded therein. The user operating the kiteboard system can be equipped with a variety of body-wearable mechanisms, such as wrist-wearable(s), body-wearable(s), and ankle-wearable(s) that communicate with the BTLE grains, as well as other communication products. The BTLE-grains can be located near to the protruding ridge within the footboard, or in a separate location within the footboard. A method of manufacture and method of testing are also disclosed.

An enhanced kiteboarding system is disclosed, combining at least a footboard and a kiteboard. The footboard has a protruding ridge incorporated therein, and also has one or more BTLE-grain(s) embedded therein. The footboard may also have a safety beacon embedded therein. The user operating the kiteboard system can be equipped with a variety of body-wearable mechanisms, such as wrist-wearable(s), body-wearable(s), and ankle-wearable(s) that communicate with the BTLE grains, as well as other communication products. The BTLE-grains can be located near to the protruding ridge within the footboard, or in a separate location within the footboard. A method of manufacture and method of testing are also disclosed.

The present invention provides a surf board, comprising a body, and a bottom board layer and a protective layer which are respectively arranged at the two sides of the body; the body comprises a first fiber glass fiber layer arranged on the bottom board layer, an inner core arranged on the first fiber glass layer and a second fiber glass layer arranged on the inner core and connected with the protective layer; the second fiber glass layer is provided with two layers. In the present invention, the bottom board layer is arranged at the lower end of the body, so that the bottom of surf board is firmer. The protective layer is arranged at the upper end of the body, so that the surface of the surf board is protected and is prevented from being damaged due to strong water pressure when the surf board is used.

The present invention provides a surf board, comprising a body, and a bottom board layer and a protective layer which are respectively arranged at the two sides of the body; the body comprises a first fiber glass fiber layer arranged on the bottom board layer, an inner core arranged on the first fiber glass layer and a second fiber glass layer arranged on the inner core and connected with the protective layer; the second fiber glass layer is provided with two layers. In the present invention, the bottom board layer is arranged at the lower end of the body, so that the bottom of surf board is firmer. The protective layer is arranged at the upper end of the body, so that the surface of the surf board is protected and is prevented from being damaged due to strong water pressure when the surf board is used.

This disclosure extends to systems, apparatus, and methods for sports board hydrofoil masts and mast-to-fuselage connection assemblies for hydrofoil sports boards. In one exemplary system, a hydrofoil mast formed as an elongated member may include a securing structure disposed in a lower region and a fuselage may include a recess into which the mast is inserted. A securing assembly may be disposed in the fuselage for actuation to secure the mast to the fuselage by interacting with the securing structure on the mast. The securing assembly may include a cam member or locking member and an actuating member. Unique hydrofoil masts constructed from composite materials having reinforcing metal members are disclosed and may be useful in the connection assemblies.