Patent ID: 8789486

Claim:
A boat having a bow and a stern, and comprising a rigid hull associated with one or more inflatable tubes which act as upper side walls, said rigid hull having a deck, comprising two types of holder for said tube(s): a gutter-shaped holder for receiving, at one at least of said bow and said stern, a tube section having a circular cross-section, said gutter-shaped holder being positioned substantially at the level of said deck, cooperating with a longitudinal portion of a cylindrical envelope of said tube section, a holder in the form of an upper side wall segment extending between said bow and said stern, said wall segment being arranged to cooperate with a structure in the form of an inflatable tube section which extends longitudinally between said bow and said stern, said holder in the form of a wall segment extending to a height which substantially corresponds to the diameter of at least one of said bow tube section and stern tube section and said holder in the form of a wall segment having a lateral position in which an outer face thereof is located substantially in a vertical mid-plane of at least one of said bow tube section and stern tube section, said inflatable tube section having a D-shaped cross-section with a flat face applied against an outer face of said upper side wall segment, and with a curved face located in an extension of an outer portion of at least one of said bow tube section and said stern tube section, and comprising at least two inflatable volumes, one of said inflatable volumes consisting of a substantially vertical inner inflatable tube with an inflatable volume of watertight cloth or fabric having two parallel faces, forming, in an inflated state, a tube shape with a substantially elongated rectangular cross-section, attached and fixed by an inner face to an outer face of said upper side wall segment, and an other of said inflatable volumes, forming an outer inflatable tube having a D-shaped cross-section with a flat face attached to an outer face of said inner inflatable tube.