发明名称 Semi-submersible platform for offshore oil field operation & method of installing a platform of this kind
摘要 The platform comprises a buoyant sub-structure comprising a base and a plurality of columns upstanding from said base, a buoyant deck-hull mounted on the columns and means for ballasting and deballasting at least the base of said sub-structure. It further comprises means for tangentially guiding said deck-hull on said columns during deployment of the platform into a predetermined configuration by ballasting of the sub-structure while the deck-hull is floating and means for locking said deck-hull to the columns in said predetermined configuration.
申请公布号 GB9827233(D0) 申请公布日期 1999.02.03
申请号 GB19980027233 申请日期 1998.12.10
申请人 DORIS ENGINEERING 发明人
分类号 B63B35/44 主分类号 B63B35/44
代理机构 代理人
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