| 摘要 |
PCT No. PCT/GB83/00223 Sec. 371 Date May 7, 1984 Sec. 102(e) Date May 7, 1984 PCT Filed Sep. 9, 1983 PCT Pub. No. WO84/00937 PCT Pub. Date Mar. 15, 1984.A demountable catamaran has a pair of inflatable hull structures each comprising an inflatable hull tube (4) and an extruded generally rectangular aluminium tubular beam (5) having at its lower surface two inclined support surfaces on opposite sides of a channel having a narrow entry. The hull tube (4) has an upstanding web extending through the entry to carry an enlarged bead (15) within the channel to lock the inflatable tube to the hull beam (5). The hull beams (5) are secured by demountable joints to cross beams (2) and (3). The seam of each hull carries a rudder assembly which can yield when the rudder hits an underwater obstruction. |
