United States Patent 3854436

Motorcycle boat has flotation, propulsion, and steering components and is arranged to demountably receive a motorcycle. The motorcycle is positioned and demountably secured on the boat in such a manner that the propulsive power of the motorcycle turns the propulsive equipment of the motorcycle boat, and the steering of the motorcycle controls the steering components of the boat.

United States Patent 3709185

An amphibious motor bike in which collapsible pontoons may be inflated and removably secured to the sides of the motor bike for supporting it on a body of water and at a position where the water level will be not higher than the lower one-third portion of the rear wheel. The pontoons are sectionalized and can be removed from the motor bike sides and deflated and collapsed like an accordion and then mounted in carriers arranged at the sides of the motor bike. A linear and flexible water paddle has articulated sections which permit it to be removably mounted on the rear tire of the motor bike so as to be rotated thereby and thus propel the motor bike over the body of water. A rudder can be moved from inoperative into operative position and it will be actuated by the operator manipulating the handle bars for steering the vehicle over the water.