| 摘要 |
A sailboat keel, especially for shoal draft sailboats, which reduces turbulence and generated vortices and increases laminar flow along the hull and keel, which comprises a upper portion attachable to the canoe hull and a body portion extending downwardly from the upper portion, the body portion flaring outwardly so as to have a maximum width at its plane of intersection with the keel bottom which is preferably smoothly curved.
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