| 摘要 |
A colapsible light and strong vessel adapted for movement over water having a substantially terahedral frame comprising three elongated rigid members each connected to a buoyant hull and which meet at a common juncture, the hulls are configured such that one hull is forward and the other two aftward, a fourth rigid member projects upwardly from this juncture, A plurality of stays are connected proximal to the distal ends of these four members. A fifth member is connected to the two aft members proximal to the the aft hulls, this fifth member may serve as a stay, decking is connected to this aft member and to the common juncture. An engine is connected proximal to the forward hull. A light weight sail is provided which comprises a plurality of elongated airfoil shaped surfaces.
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