Patent attributes
The present invention relates to a human-powered boat that a user can easily operate with his/her own manual power even though the boat is in a form causing large resistance to propulsion, and the human-powered boat is equipped with a propulsion apparatus that imitates the tail fin of a fish. The propulsion apparatus, in which an oscillating foil mechanism is applied to an “L-shaped oar”, enables a rider to perform forward-facing rowing and can easily change a direction and prevent damage due to a collision with an underwater obstacle. Typically, the human-powered boat of the present invention has the following three limitations in order to maximize simplicity while maintaining propulsion efficiency, compared with prior arts in the same technical field: First, a rider has a specific limitation in tilting the propulsion apparatus through an up-down movement of his/her arm. Second, the foil of the propulsion apparatus does not make contact with the longitudinal axis of the boat body in a predetermined range of motion. Third, the propulsion apparatus has a predetermined level of limitation in generating a propulsion force below the submerged portion of the boat body.
