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On the Sensitivity of the Roll Motion of an FPSO

[+] Author Affiliations
Martijn H. J. Kragtwijk

Halliburton Subsea, Stavanger, Norway

Tone M. Vestbo̸stad

Delft University of Technology, Delft, The Netherlands

Jan H. Vugts

Statoil, Stavanger, Norway

Ove T. Gudmestad

Stavanger University College, Stavanger, Norway

Paper No. OMAE2002-28383, pp. 687-694; 8 pages
  • ASME 2002 21st International Conference on Offshore Mechanics and Arctic Engineering
  • 21st International Conference on Offshore Mechanics and Arctic Engineering, Volume 1
  • Oslo, Norway, June 23–28, 2002
  • Conference Sponsors: Ocean, Offshore, and Arctic Engineering Division
  • ISBN: 0-7918-3611-8 | eISBN: 0-7918-3599-5
  • Copyright © 2002 by ASME


This paper describes a theoretical model that has been used to investigate the roll motion of an FPSO. The Statoil operated Norne FPSO at Haltenbanken off central Norway has been used as a reference for the investigation. The model is based on linear potential theory. The viscous roll damping has been incorporated by linearizing the effect. Problems when simultaneously using various computer programs, textbooks and the theoretical model are highlighted. Also areas of caution when working with model tests are identified. The theoretical model has been used to investigate the sensitivity of the roll motion to certain key parameters. The theoretical model has further been compared with results from model tests and with full-scale measurements. The results of these comparisons are described and conclusions and recommendations following the investigation are presented.

Copyright © 2002 by ASME
Topics: Motion , FPSO



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