Float Off Operation of a Semi-Submersible Barge with Unsymmetrical Floater Arrangement

概要

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When a large size offshore structure such as Spar transported by a semi-submersible barge floats off, floaters located at the corners of the barge sometimes become obstacles for the operation. Especially, when the float off site is open sea, the probability of contact damage between the floaters and the transported structure will be high. This paper discusses possibility of reduction of the number of floaters to shorten float off duration so that the contact damage can be avoided. It is concluded that float off operation of Spar can be carried out with a semi-submersible barge with three floaters located unsymmetrically from the view point of stability, loads on the barge and ballasting operation.
2002-03-25