| 摘要 |
A powered catamaran boat having displacement hulls (10) that provide stable boat performance. The two hulls (10) are joined by a deck structure (12), forming a tunnel (16) between the two hulls. Each of the hulls is symmetric and has a half entry angle ( theta ) less than 10 DEG at and below the water line, and a length-to-maximum beam ratio at the water line from approximately 9.88:1.0 to 10.92:1.0. The rear portion of each keel extends rearwardly and upwardly from the horizonal at an angle between approximately .80 DEG and 1.4 DEG . The ratio between the minimum vertical distance from the water line to the deck structure and the minimum width of the tunnel (16) is between 1.0:2.0 and 1.0:2.5. Additionally, each hull (10) includes a chine (50) that extends laterally outwardly from the hull a distance from approximately 3% to 6% of the maximum beam (24) of the hull at the water line.
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