With the gradual depletion of oil and gas resources onshore as well as shallow offshore waters, oil exploration is gradually moving deeper and deeper into the seas. One of the major means of oil exploration at such locations is by way of a Floating Production Storage and Offloading (FPSO) system. Because of the ever increasing depths of exploration and the prevailing harsh environmental conditions, there is a need to constantly re-evaluate or develop new methods for mooring system analyses. This paper presents the analysis of a coupled multi-component mooring/riser/FPSO system in ultra deepwater due to the first and second order wave induced motions in time-domain. Analysis was carried out for two case studies and the results were found to be quite practical.

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