| 摘要 |
A sailboat sail (30, 40, 50) and method of manufacture thereof, the sail material being chosen from a group of materials which lay substantially flat at all points when laid against a planer surface but which stretch under wind loading when attached to a sailboat (20) to assume the conventional airfoil shape desirable of a sail. The sail has informational content such as advertising or other messages printed or otherwise imparted thereto. One method of providing such a sail includes the steps of providing a flat sheet of stretchable material (50) having physical properties capable of withstanding conventional wind load-induced forces in near-shore sailing conditions, printing on one or both sides of the sheet information content to be displayed while the sail is mounted upon a sailboat, an cutting the sheet into the shape of a sail. The steps of printing and cutting may be transposed.
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