초록 ▼

A planing vessel has a hull and a propulsion and control system. The hull has a plane bottom formed of an equicrural triangle in the front and a rectangle at the back, two boards and one or more swell guideways. Each swell guideway has an inclined top line with a lower front and a higher back dentin

A planing vessel has a hull and a propulsion and control system. The hull has a plane bottom formed of an equicrural triangle in the front and a rectangle at the back, two boards and one or more swell guideways. Each swell guideway has an inclined top line with a lower front and a higher back denting upwardly into and extending lengthwise throughout the bottom and paralleling its centerline. The hull also has a pair of wave-splash guards inlaid or dented one into the boards as an integrated body, a deck, a cabin and an upper construction. The planing vessel so formed can generate sufficient hydrodynamic buoyancy with reasonable distribution to quickly lift itself out of the water and enter a planing state. The planing vessel can have various fine performances, desirable speed and stability to move on rough waters.

대표청구항 ▼

[ What is claimed is:] [1.] A planing vessel comprising:a bottom;a deck;two sides;wherein said bottom is substantially planar and has an equicrural triangle portion in the front and a rectangle portion at the back;at least one swell guideway denting upwardly into and extending lengthwise throughout

[ What is claimed is:] [1.] A planing vessel comprising:a bottom;a deck;two sides;wherein said bottom is substantially planar and has an equicrural triangle portion in the front and a rectangle portion at the back;at least one swell guideway denting upwardly into and extending lengthwise throughout said bottom in a space between said bottom and said deck, said swell guideway having a centerline that is substantially parallel to and/or coincides with the centerline of said bottom, wherein said swell guideway has a predetermined cross-sectional shape, and a longitudinal sectional shape with an inclined top line having a lower front and a higher back;a pair of wave-splash guards each having a lower front and a higher back; andwherein the sizes of said equicrural triangle portion and said rectangle portion are determined in accordance with the following:setting the coordinate origin 0 on the bottom centerline, 0 being the midpoint of overall length 2a of said bottom, a being half the length of said bottom, 0X axis being the ordinate, OZ axis being the abscissa, wherein X and Z are variables along said 0X axis and said OZ axis, respectively, and said equicrural triangle portion has equicrural sides S;l being the projection length of said S on said OX axis;t being the length of said rectangle portion in the direction of said OX axis;2b being the width of said rectangle portion in the direction of said OZ axis;the sizes of l, t, 2b being determined according to the gross weight W.sub.1 +W.sub.2, speed U and the planing attack angle .theta. of the vessels designed and referring to expressions (1) and (2) below,said expression (1) being L=2.rho.U.sup.2 a.sup.2 P sin .theta., wherein L is the hydrodynamic buoyancy,wherein, ]EQU4 ] said expression (2) being X=M/L, wherein X is the distance between the midpoint 0 of the bottom centerline and the center 0.sub.1 of hydrodynamic buoyancy,wherein ]EQU5 ] p being the density of water, U being the vessel speed, .theta. being the attack angle of said bottom against the horizontal when the vessel is in motion,W.sub.1 being the weight of the vessel, W.sub.2 being the load weight, and L=W.sub.1 +W.sub.2 when the vessel is in a planing state,M being the moment of the lifting pressure on said bottom with respect to the centerline midpoint 0,.theta..sub.1 being the attack angle of said bottom against the horizontal when the vessel is in a static state,k.sub.0 being generally greater or equal to 0.1 and less than or equal to 1; g being the acceleration of gravity, and .delta. being the half depth of the stern end draft.