Patent ID: 7112108

Claim:
An aquatic craft having a buoyant body, a frame located on said body above its waterline, pivoted relative to said body and movable in see-saw fashion by transfer of body weight of an operator, a resilient means interconnecting said frame and said body and arranged to return said frame to a rest position, an arm connected to said frame and reciprocated thereby and having a lower end which extends below said waterline, a pair of substantially rigid sheets pivoted about an axis defining an edge of each sheet, said sheets being located at or adjacent the lower end of said arm and being pivotable between a closed configuration in which said sheets are substantially abutting and a V-configuration, in which said sheets are inclined towards each other, and stop means adjacent said sheets to prevent pivotable movement of said sheets beyond said V-configuration wherein said body weight transfer reciprocates said sheets through the water in substantially the intended direction of travel whereby said water moves said sheets during each forward movement into said closed configuration and during each rearward movement into said V-configuration whereby the interaction of said sheets and water propels said craft forwardly.