公开(公告)号：US5263427A

公开(公告)日：1993-11-23

申请号：US750858

申请日：1991-08-29

申请人： Osamu Yamamoto ,  Yasuhiro Kitamura ,  Masahiro Kishimoto

发明人： Osamu Yamamoto ,  Yasuhiro Kitamura ,  Masahiro Kishimoto

IPC分类号： B63B1/12 ,  B63B1/10

CPC分类号： B63B1/12

摘要： A catamaran comprises two single hulls arranged in parallel in the spaced relation to each other, and a deck for connecting the two single hulls, the single hull having a semisubmerged portion and a connecting portion for connecting the semisubmerged portion to the deck, the semisubmerged portion having a maximum width portion where the width of its vertical transverse cross section is largest at a position near the water level, the width of vertical transverse cross section of the semisubmerged portion abruptly decreases upward in the vertical direction from the maximum width portion and gradually decreases downward in the vertical direction from the maximum width portion, the semisubmerged portion having a minimum width portion where the width of vertical transverse cross section becomes smallest after it abruptly decreases upward in the vertical direction, and the width of vertical transverse cross section of the minimum width portion is 60% or less and 30% or more of the width of vertical transverse cross section of the maximum width portion.