Patent ID: 8764498

Claim:
A nautical device comprising: (1) a float; (2) a wave-actuated component; and (3) a tether that connects the float to the wave actuated component, wherein the tether includes first and second rigid sections that are configured to move relative to one another so as to transform between (a) an adjacent position in which at least part of the tether is close to the float, and (b) an extended position in which the tether is extended below the float, wherein the float, the tether, and the wave-actuated component are configured such that when the nautical device is in wave-bearing water with the float on or near the surface of the water and the tether submerged in the extended position below the float, the wave-actuated component interacts with the water to generate forces that are transmitted to the tether so as to propel the nautical device horizontally through the water.