|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||114/061.14; 114/061.13; 114/283|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 7 인용 특허 : 22|
A watercraft has at least two narrow hulls with a shallow draft and has one or more passive flotation devices that are entirely submerged. The hulls enclose the power trains for the watercraft and are accessible from the compartments of the watercraft. The passive flotation devices do not include a power train or any other equipment requiring access from the compartments of the watercraft. The narrow, shallow draft hulls have low friction drag and produce a small bow wave. Thus, the watercraft is able to be propelled rapidly, to be propelled for a greate...
The invention claimed is: 1. A watercraft comprising: at least first and second hulls, each hull including at least one electrical motor and a propulsion device coupled to the electrical motor, each hull having a stern, a bow and a bottom surface extending in a forward direction between the stern and the bow, each of the hulls floating on a water surface during operation with a lower portion of each hull displacing water to provide buoyancy; a structure supported by the first and second hulls; a first passive flotation device positioned below and parall...