APPLICATION FOR ESTIMATING MOTION BEHAVIORS OF FPSO/FSRU AND SHUTTLE TANKER IN ALONGSIDE AND TANDEM MOORING CONDITIONS

摘要

With increasing attention to global warming, expectations for Floating Production Storage and Offloading (FPSO) System to develop a gas field of which reserve is smaller, or Floating Storage and Regasification Unit (FSRU) as LNG terminal are growing. Offloading transfer of LNG requires rigid loading arm instead of flexible hose because of low temperature of LNG. It involves the relative motion estimation between LNG FPSO/FSRU and a shuttle tanker to design loading arm and to estimate operability of offloading work. The operability in environmental conditions of the sites affects on the decision of the storage capacity and the necessary number of LNG carriers for transportation. For this task of motion study, the motion estimation programs for alongside and tandem alignment have been developed. This paper presents outline of the programs and some validation results. An example of application of the calculation results to design FSRU is also shown.