An apparatus for a boat includes a lower rail, a seat support slidably mounted to the lower rail, an upper set of rails connected to the seat support with at least one rail support supporting each upper rail in the upper set of rails, and two paddle holders, each paddle holder slidably mounted to one of the upper rails in the upper set of rails. The paddle holders pivot relative to the upper rails, such that when paddles are attached, the paddles holders are capable of lowering and raising the paddles in and out of the water.

An apparatus for a boat includes a lower rail, a seat support slidably mounted to the lower rail, an upper set of rails connected to the seat support with at least one rail support supporting each upper rail in the upper set of rails, and two paddle holders, each paddle holder slidably mounted to one of the upper rails in the upper set of rails. The paddle holders pivot relative to the upper rails, such that when paddles are attached, the paddles holders are capable of lowering and raising the paddles in and out of the water.

Surfboards moved by user power comprises: a surfboard body streamlined, when viewed from a plan view, concave grooves are formed on both sides, respectively; a propulsion body including: a first propulsion body formed with a first propulsion unit that is hinged to one side groove of the surfboard body and is formed inclined with respect to the surfboard body on a lower surface to generate propulsion force according to the movement of the user's feet; and a second propulsion body formed with a second propulsion unit that is hinged to the other side groove of the surfboard body and is formed inclined with respect to the surfboard body on a lower surface to generate propulsion force according to the movement of the user's feet; and a direction change unit including: a rotating shaft passing through the surfboard body; a handle disposed on an upper end of the surfboard body of the rotating shaft to rotate the rotating shaft; and a direction change key that is disposed on a lower part of the surfboard body of the rotating shaft and rotates together with the rotating shaft.

Surfboards moved by user power comprises: a surfboard body streamlined, when viewed from a plan view, concave grooves are formed on both sides, respectively; a propulsion body including: a first propulsion body formed with a first propulsion unit that is hinged to one side groove of the surfboard body and is formed inclined with respect to the surfboard body on a lower surface to generate propulsion force according to the movement of the user's feet; and a second propulsion body formed with a second propulsion unit that is hinged to the other side groove of the surfboard body and is formed inclined with respect to the surfboard body on a lower surface to generate propulsion force according to the movement of the user's feet; and a direction change unit including: a rotating shaft passing through the surfboard body; a handle disposed on an upper end of the surfboard body of the rotating shaft to rotate the rotating shaft; and a direction change key that is disposed on a lower part of the surfboard body of the rotating shaft and rotates together with the rotating shaft.

A pedal installation structure of a boat includes a slide rail, a pull rod, a slider, and a pedal. The slide rail has a plurality of spaced tooth grooves thereon. The pedal is installed on the slider. The slider is slidably installed on the slide rail. The pull rod is installed between the slider and the slide rail. One end of the slider is provided with a rotatable pawl. A lower surface of the pawl is provided with a plurality of spaced teeth. It is convenient to use the pedal that has a simple structure.

Examples are disclosed that relate to watercraft with retractable drive mechanisms. One example provides a watercraft including a hull having a receiving compartment, and also having a deck. The watercraft also includes a drive unit extending through the deck and the hull of the watercraft and being configured to receive rotational input. The drive unit includes a driveshaft and propeller moveable between an extended position in which the propeller is positioned underneath the hull and a retracted position in which the propeller is positioned at least partially within the receiving compartment.

Examples are disclosed that relate to watercraft with retractable drive mechanisms. One example provides a watercraft including a hull having a receiving compartment, and also having a deck. The watercraft also includes a drive unit extending through the deck and the hull of the watercraft and being configured to receive rotational input. The drive unit includes a driveshaft and propeller moveable between an extended position in which the propeller is positioned underneath the hull and a retracted position in which the propeller is positioned at least partially within the receiving compartment.

An apparatus for a boat includes a lower rail, a seat support slidably mounted to the lower rail, an upper set of rails connected to the seat support with at least one rail support supporting each upper rail in the upper set of rails, and two paddle holders, each paddle holder slidably mounted to one of the upper rails in the upper set of rails. The paddle holders pivot relative to the upper rails, such that when paddles are attached, the paddles holders are capable of lowering and raising the paddles in and out of the water.

An apparatus for a boat includes a lower rail, a seat support slidably mounted to the lower rail, an upper set of rails connected to the seat support with at least one rail support supporting each upper rail in the upper set of rails, and two paddle holders, each paddle holder slidably mounted to one of the upper rails in the upper set of rails. The paddle holders pivot relative to the upper rails, such that when paddles are attached, the paddles holders are capable of lowering and raising the paddles in and out of the water.

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.