Abstract: A windsurfing mechanism that comprises a plurality of gliding parts to permit travel at the surface of a medium and adapted to prevent the windsurfing mechanism from sinking into the body of the medium, said plurality of gliding parts being mechanically secured to one another to form an elongate but flexible structure having a surface to support a surfer. To provide propulsion of the mechanism along the surface of the medium a sail is secured to the ski like gliding parts. To the flexible structure is also secured a fin extending rearwardly from the flexible structure to engage said medium. The fin is vertically flexible and laterally bendable.