发明名称 |
High maneuverability towcraft |
摘要 |
A maneuverable towcraft consisting of a partial hull structure to which is removably attached at least three downward-projecting fins. A first ventral fin of sufficient size and draft is located along the craft's centerline, toward the front of the craft. A second and third fin, smaller in size and draft relative to the ventral fin, are laterally spaced-apart at a station aft of the ventral fin. The towline attachment to the towcraft is at a point above the craft's operative waterline and situated such that the towline line-of-force intersects, or very nearly intersects, the ventral fin's effective vertical zero-moment line for normal towline attitudes. Maneuvering of the towcraft by its one or more riders is accomplished by differential drag means.
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申请公布号 |
US7178475(B2) |
申请公布日期 |
2007.02.20 |
申请号 |
US20040014670 |
申请日期 |
2004.12.15 |
申请人 |
HALL JR HERBERT LA VERNE;HAMILTON J DOUGLAS |
发明人 |
HALL, JR. HERBERT LA VERNE;HAMILTON J. DOUGLAS |
分类号 |
B63B21/56;B63B3/38;B63B7/08;B63B35/00;B63B35/73 |
主分类号 |
B63B21/56 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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