Abstract:In order to get more accurate wind load of the semi-submersible platform docking at quayside during typhoon for the reasonable mooring arrangement, two semi-submersible platforms are taken as the research objects, the empirical formulae of the wind load, including foreign API code, NORSOK code and domestic Port Engineering Load Code, are adopted for the fine theoretical calculation, the results are compared with the wind tunnel test results of elaborate and simplified models. The design redundancy and the simplified method of the statistics of windage area of each formula are gotten, which provides reasonable wind load for the subsequent mooring force calculation.