| 摘要 |
<p>A vessel includes an heavy loaded catamaran, one or several movable buoyant roll-on/roll-offplatform(s) (3); a moving mean is provided for draft variation in heavy deep seasso that the platform(s) (3) may be raised or lowered between the hulls therebyselectively changing the flotation of the vessel. In the upper position, thevessel is a deep-sea catamaran, in an intermediate position the platform(s)is buoyant and a canal is formed between platform bottom and catamaran keels,in the lower position, platform bottom and catamaran are even-keel convertingthe catamaran in a shallow water craft, in the lowest position, the catamaranis raised above water for docking.</p> |
