Patent ID: 6257165
Filing Date: 2001-07-10
Classification: B63B,B63H

Abstract:
A multi decked vessel for working in a water body, the vessel comprising:a first platform having a top side and an underside;a first hull attached to said first platform's underside and a second hull attached to said first platform's underside;a first leg extending vertically from said first platform;a second leg extending vertically from said first platform;a second platforn positioned on the top side of said first platform, said second platforn having a first opening and a second opening, and wherein said first leg extends through said first opening and said second leg extends through said second opening;means, operatively positioned on said second platform, for raising and lowering said second platform relative to said first platform;a plurality of suction anchors attached to said first hull and said second hull, and wherein said plurality of suction anchors are attached by a plurality of anchor lines.