A multi-hulled watercraft adapted to travel above the surface of a body of water includes deck structure disposed between the hulls and defining with the hulls and water surface a channel through which air is compressively funneled with forward travel of the watercraft. The electret and card assembly is printable on up to four planar surfaces, with both the electret film and paper stock or card having a front and back side that is printable. At least one subsequent versioned data item is determined based on a sampling interval and an end time for the historical period. The lighting of each pixel is altered by altering a surface normal of the pixel using a value obtained from each of one or more normal maps.