| 摘要 |
A waterwheel made up of a number of parallel narrow circular bands, connected by spokes to a central metal axel, which is in turn mounted to a boat hull on bearings. The axel is oriented perpendicular to the long axis of the keel line. Alternative to the parallel circular bands, a narrow spiral band, supported by a central metal ring and two lateral rings is also presented. Making the supporting rings of similar size simulates a flat surface of support, while making the central ring larger than the lateral support ring simulates a "V" shaped surface of support. These narrow circular or spiral bands tend to slice through the waves resulting in a smoother ride, yet still providing enough lifting effect like a water ski. However, unlike water skis, the waterwheels rotate around an axel, which is mounted on bearings, thus considerably reducing drag and improving efficiency.
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