A modular hybrid propulsion unit is disclosed that is mountable to a watercraft. According to an example, the modular hybrid propulsion unit includes a housing configured to fit within a complementary housing receiver on a topside of the watercraft, and a rotational output coupling configured to rotationally engage with a rotational input coupling for a propeller of the watercraft. The propulsion unit further includes an electric motor within the housing, the electric motor having a motor shaft connected to the rotational output coupling for providing an electrically powered rotational input to the rotational output coupling. The propulsion unit further includes a crank having one or more crank arms. The crank is connected to the rotational output coupling for providing a human powered rotational input to the rotational output coupling independent of the electrically powered rotational input by the electric motor.

A modular floatation assembly includes a basal panel that is comprised of a buoyant material to float in water. The basal panel has a plurality of wells each is integrated into the basal panel. A plurality of walls is provided and each of the walls is comprised of a buoyant material to float in water. Each of the walls can be attached to the basal panel in a variety of arrangements. A tower is comprised of a buoyant material to float in water and the tower is attachable to the basal panel thereby facilitating the tower to be positioned at a variety of locations on the basal panel. A pair of rods is each releasably attachable to the tower to be gripped in the convention of a handle.

A modular floatation assembly includes a basal panel that is comprised of a buoyant material to float in water. The basal panel has a plurality of wells each is integrated into the basal panel. A plurality of walls is provided and each of the walls is comprised of a buoyant material to float in water. Each of the walls can be attached to the basal panel in a variety of arrangements. A tower is comprised of a buoyant material to float in water and the tower is attachable to the basal panel thereby facilitating the tower to be positioned at a variety of locations on the basal panel. A pair of rods is each releasably attachable to the tower to be gripped in the convention of a handle.

A maneuverable platform capable of operating on both fluid bodies (e.g., lakes, rivers, oceans, etc. in either liquid or frozen form) and land is provided. The platform has an above water portion formed of one or more sections onto discrete sections of which are positioned a number of buoyant propulsion members configured to support the above water portion and engage a fluid body or the ground to collectively provide support, propulsion and steering for the platform. The buoyant propulsion members are configured such that they provide buoyancy to the platform when the platform is at rest and lift when the platform reaches a specified hydrodynamic speed such that the platform planes atop the fluid of the fluid body during operation. The maneuverable platform, including the above water portion and the buoyant propulsion members, may be modular such that the platform may be split into sections of predetermined configuration to operate independently.

The human powered hydrofoil bicycle includes multiple subsystems integrated together including a structural frame subsystem with associated steering and tiller module, a hydrofoil subsystem to provide vehicle lift, and a powertrain subsystem. The structural frame subsystem may be fitted with buoyancy modules to provide the overall vehicle with a near neutrally buoyant character. The structural frame subsystem also supports a seat for an operator and provides structural support for the steering and tiller module for the hydrofoil subsystem and the drivetrain subsystem. The hydrofoil subsystem includes multiple hydrofoil elements at lowermost portions of the vehicle. These hydrofoil elements generally include in a preferred embodiment a larger rear foil and a smaller front foil. The powertrain subsystem generally includes pedals rotatably supported on the vehicle at a convenient location for engagement and driving by feet of an operator. Power transmission elements extend from the pedals down to a prime mover such as a propeller.

The human powered hydrofoil bicycle includes multiple subsystems integrated together including a structural frame subsystem with associated steering and tiller module, a hydrofoil subsystem to provide vehicle lift, and a powertrain subsystem. The structural frame subsystem may be fitted with buoyancy modules to provide the overall vehicle with a near neutrally buoyant character. The structural frame subsystem also supports a seat for an operator and provides structural support for the steering and tiller module for the hydrofoil subsystem and the drivetrain subsystem. The hydrofoil subsystem includes multiple hydrofoil elements at lowermost portions of the vehicle. These hydrofoil elements generally include in a preferred embodiment a larger rear foil and a smaller front foil. The powertrain subsystem generally includes pedals rotatably supported on the vehicle at a convenient location for engagement and driving by feet of an operator. Power transmission elements extend from the pedals down to a prime mover such as a propeller.

A catamaran for a wheelchair has two parallel pontoons secured abeam a bow beam and a wheelchair engaging framework for selective attachment and submersion of a wheelchair in water between the pontoons behind the bow beam in use. The catamaran is able to engage a wheelchair in a simple and convenient manner for recreational water sport use by those of limited mobility.

A catamaran for a wheelchair has two parallel pontoons secured abeam a bow beam and a wheelchair engaging framework for selective attachment and submersion of a wheelchair in water between the pontoons behind the bow beam in use. The catamaran is able to engage a wheelchair in a simple and convenient manner for recreational water sport use by those of limited mobility.

A water toy comprising a foam tube having a first end, a second end and a body therebetween, an optional seat positioned on the body, a first feature attached to the first end, and a second feature attached to the second end, the first and second features being aesthetic and/or functional and/or a combination of the same.