The invention relates to water ski (1) having a buoyant ski body (2), to which, in addition to a binding (3), a propelling drive is assigned, which comprises a rotary drive unit with a rotary drive (4) and a screw drive which can be driven thereby, and having a control device (6) for presetting a drive power. In order to create advantageous drive conditions, it is proposed that the water skis (1) of a pair of water skis each comprise a rotary drive unit with at least one drive sensor (7) each, an associated energy storage device and a communication device, which adjusts the rotary drives (4) of both water skis (1) as a function of drive sensor data and preset data of the control device (6).

The invention relates to an aquatic shoe consisting of a shoe body (1), a pair of wings (3) and floats (4, 4′), characterized in that the wings (3) are symmetrical, glued together, and linked to the shoe body (1), below the shoe, so as to constitute a part of the sole (2) of the shoe, and in that the float (4) is integrated below the wings (3), at the sole (2), so that one of its faces covers the sole (2), and in that the wings (3) are fixed by a pivot connection on both sides of the shoe, so that they descend when the foot ascends into the water and rise when the foot goes down into the water so that they return to their original position. The invention also relates to the use of footwear in the fields of recreational water and/or sport and in the paramedical fields. The shoe according to the invention can be used for the rehabilitation of animals.

An elliptical powered watercraft includes a buoyant platform, a paddle wheel, pedals operatively connected to the paddle wheel, and a skeg, a fin, or a rudder operatively connected to a steering device, such as handlebars or a steering wheel. An operator propels the elliptical powered watercraft by balancing on the buoyant platform, generating rotational movement with the pedals to deliver power to the paddle wheel, and steering the elliptical powered watercraft by turning the skeg, the fin, or the rudder with the handlebars or the steering wheel.

A user propelled flotation and transportation system, the system including first and second buoyant floats configured to be selectively attached and detached to a user's feet, each of the first and second floats including an elongate hull having a forward end and a rear end, a foot receiving portion provided on a top surface of the hull, a pair of fins extending downward along a length of the hull and arranged to be substantially parallel to form a channel along a bottom surface of the hull, and one or more flaps arranged between the fins and configured to pivot about a line between the fins that is proximate the bottom surface of the hull, wherein the one or more flaps are configured to be movable between a first position extending downwardly from the bottom surface of the hull, and a second position rotated back toward the rear end of the hull.

A user propelled flotation and transportation system, the system including first and second buoyant floats configured to be selectively attached and detached to a user's feet, each of the first and second floats including an elongate hull having a forward end and a rear end, a foot receiving portion provided on a top surface of the hull, a pair of fins extending downward along a length of the hull and arranged to be substantially parallel to form a channel along a bottom surface of the hull, and one or more flaps arranged between the fins and configured to pivot about a line between the fins that is proximate the bottom surface of the hull, wherein the one or more flaps are configured to be movable between a first position extending downwardly from the bottom surface of the hull, and a second position rotated back toward the rear end of the hull.

A moving body that moves at least one of in water or along a water surface, in accordance with a person moving on the water by stepping with feet in an alternating manner, includes a movement information acquiring unit that acquires information concerning movement of a foot of the person or a worn item worn on the foot of the person, and a control unit that, when the foot of the person moves away from the moving body, causes the moving body to move to a stepping destination of the foot based on the information acquired by the movement information acquiring unit. A moving body system includes the moving body and the worn item.

A moving body that moves at least one of in water or along a water surface, in accordance with a person moving on the water by stepping with feet in an alternating manner, includes a movement information acquiring unit that acquires information concerning movement of a foot of the person or a worn item worn on the foot of the person, and a control unit that, when the foot of the person moves away from the moving body, causes the moving body to move to a stepping destination of the foot based on the information acquired by the movement information acquiring unit. A moving body system includes the moving body and the worn item.

Manually propelled water skis support a person skiing on water. The water ski includes a base having a binding on an upper surface and propulsion structures on the bottom surface. The propulsion structures include a rearward facing and vertical propulsion surface and a forward facing and sloped surface such that drag is greater when the water ski is moved rearwardly. The propulsion surface may be arcuate, V-shape, U-shaped, or other shaped in a horizontal plane and may also be concave in a vertical plane. Buoyancy structures may be secured to the upper surface of the base forward and rearward of the binding. Water ski poles including elliptical floats at the bottom ends may be used to provide a synergistic increase in waterskiing speed. Straps on the base near the binding may be used to secure the water ski poles to the base in order to form an outrigger.

Manually propelled water skis support a person skiing on water. The water ski includes a base having a binding on an upper surface and propulsion structures on the bottom surface. The propulsion structures include a rearward facing and vertical propulsion surface and a forward facing and sloped surface such that drag is greater when the water ski is moved rearwardly. The propulsion surface may be arcuate, V-shape, U-shaped, or other shaped in a horizontal plane and may also be concave in a vertical plane. Buoyancy structures may be secured to the upper surface of the base forward and rearward of the binding. Water ski poles including elliptical floats at the bottom ends may be used to provide a synergistic increase in waterskiing speed. Straps on the base near the binding may be used to secure the water ski poles to the base in order to form an outrigger.

A stand-up paddle with a shaft (3) arranged between a paddle blade (1) and a handle (2) is described. In order to design the stand-up paddle in such a way that paddle strokes on stand-up paddle boards can be performed, in particular by inexperienced users, without the risk of loss of balance, it is suggested that the handle part (2) is attached to the end of the shaft (3) opposite the paddle blade (1) by means of a tension-resistant, flexible connecting element (4).