A watercraft includes at least one floating member, a central frame supported thereon, first and second foot platforms, and first and second handlebars. The first and second handlebars define elongated configurations and include grasping end portions, intermediate portions pivotably coupled to the central frame, and base end portions pivotably coupled to first end portions of the respective first and second foot platforms. A propulsion system includes an axle assembly, first and second rotating arms, and first and second oars. The rotating arms are fixed relative to one another, pivotably coupled about the axle assembly at first ends, and pivotably coupled to second end portions of the foot platforms at second ends. The oars are engaged with and extend from the foot platforms. The propulsion system cycles the oars approximately 180 degrees out of phase to propel the watercraft while maintaining substantially perpendicular orientation of the oars.

A paddle for use with watercraft can include a shaft assembly, a handle connected to a first end of the shaft assembly, and a blade assembly including a flexible blade part removably connected at a second end of the shaft assembly, the blade part being foldable when removed from the shaft assembly. In some examples, the blade part is foldable into a rolled-up position when removed from the shaft assembly.

A paddle for use with watercraft can include a shaft assembly, a handle connected to a first end of the shaft assembly, and a blade assembly including a flexible blade part removably connected at a second end of the shaft assembly, the blade part being foldable when removed from the shaft assembly. In some examples, the blade part is foldable into a rolled-up position when removed from the shaft assembly.

The present invention disclosed a paddle, which includes a blade and a pole that connects to the blade. The pole consists of a first rod and a second rod capable of entering and moving within; with one end of the second rod connected to the first rod and able to move simultaneously. Wherein, the material of the first rod within the pole is different from that of the pole, and the paddle is less likely to break instantaneously.

The present invention disclosed a paddle, which includes a blade and a pole that connects to the blade. The pole consists of a first rod and a second rod capable of entering and moving within; with one end of the second rod connected to the first rod and able to move simultaneously. Wherein, the material of the first rod within the pole is different from that of the pole, and the paddle is less likely to break instantaneously.

A blade for a kayak paddle with a shaft can include a body extending from the shaft to a blade tip. The body has a cross-sectional profile separated at a chord line into a top section with an upper surface and a bottom section with a lower surface. The paddle can also include a shoulder section smoothly transitioning between the shaft and the blade body. The top section of the cross-sectional profile can be thicker than the bottom section and the upper surface exhibits more curvature than the lower surface, thereby increasing fluid flow speed over the upper surface to generate a lift force when the body is moved through water.

A blade for a kayak paddle with a shaft can include a body extending from the shaft to a blade tip. The body has a cross-sectional profile separated at a chord line into a top section with an upper surface and a bottom section with a lower surface. The paddle can also include a shoulder section smoothly transitioning between the shaft and the blade body. The top section of the cross-sectional profile can be thicker than the bottom section and the upper surface exhibits more curvature than the lower surface, thereby increasing fluid flow speed over the upper surface to generate a lift force when the body is moved through water.

An oar apparatus configured to remain submerged under water during the power stroke and the return stroke. The oar apparatus has a sheath and a shaft rotationally disposed within the sheath. An oar blade is affixed to the shaft, such that the oar blade is rotational relative to the sheath. The oar blade has a deployed orientation, in which the oar blade is substantially perpendicular to the movement direction of the vessel, and a feathered configuration, in which the oar blade is substantially parallel to the movement direction of the vessel. The oar blade is asymmetrical relative to the center axis of the shaft, such that resistance of the water exerted onto the oar blade creates a first moment urging the oar blade into the deployed orientation during the power stroke and a second moment urging the oar blade into the feathered orientation on the return stroke.

An oar apparatus configured to remain submerged under water during the power stroke and the return stroke. The oar apparatus has a sheath and a shaft rotationally disposed within the sheath. An oar blade is affixed to the shaft, such that the oar blade is rotational relative to the sheath. The oar blade has a deployed orientation, in which the oar blade is substantially perpendicular to the movement direction of the vessel, and a feathered configuration, in which the oar blade is substantially parallel to the movement direction of the vessel. The oar blade is asymmetrical relative to the center axis of the shaft, such that resistance of the water exerted onto the oar blade creates a first moment urging the oar blade into the deployed orientation during the power stroke and a second moment urging the oar blade into the feathered orientation on the return stroke.

A device and method for temporarily attach a tool, such as a paddle or a fluid container, to a floatation watercraft, wherein the device is partially covered by a user's gear, such as a kayak skirt. The user's gear preferably includes an elastic edge element that slips under a lip of a cockpit or hatch of the watercraft wherein the invented is positioned between the lip and the elastic edge element while coupled with one or more tools. The device extends beyond both the watercraft lip and the user's gear whereby the tool may be supported distally from the watercraft lip.