Global performance analysis of concrete FPSO with tangerine transverse cross section Conference Paper uri icon


  • Copyright 2017 by the International Society of Offshore and Polar Engineers (ISOPE). As an alternative design to circular FPSO (Floating Production Storage and Offloading), a concrete FPSO with tangerine transverse cross section is investigated. As a two-level structure, the bottom has larger tangerine transverse cross section, and two different top structures are considered: circular shape and tangerine shape. In frequency domain, characteristics of hydrodynamic coefficients are investigated along comparison between the two cases, and Response Amplitude Operator (RAO) is obtained for the linear system. Structural strength is also examined around the transverse cross sections. Following the frequency domain, optimum mooring system is designed and global performance is analyzed using time-domain nonlinear simulation program, CHARM3D/HARP (Kim 2006), which couples floating body dynamics, random seas, and mooring-riser dynamics. In the time domain, the FPSO with tangerine transverse cross sections for both of the top and bottom structures is considered. A mooring system is designed to have maximum offset less than 5% of the water depth as well as maximum tension less than 60% of Minimum Breaking Load (MBL) in survival condition (RP2SK 2005). Similarly to damping structures of existing circular FPSOs, a set of damping plates in heave direction are tested and influences of the heave damping plates on the global performance are discussed.

published proceedings

  • Proceedings of the International Offshore and Polar Engineering Conference

author list (cited authors)

  • Kang, H. Y., Cho, J. Y., & Park, J. H.

complete list of authors

  • Kang, HY||Cho, JY||Park, JH

publication date

  • January 2017