A three-dimensional sail apparatus that is made up of a plurality of spacedly disposed foils and a sail cloth for attachment to the foils on opposite sides thereof. The computer graphics system includes generally a graphics library and graphics hardware together defining the imaging pipeline, and a graphics application program invoking operations in the imaging pipeline through an application program interface provided by the graphics library. The interface module may include a transceiver coupled to the communications network, a processor configured to output graphics data, and a plurality of transmitters configured to receive the graphics data and generate a plurality of synchronous graphics signals.