Catamaran Floatover

  • Gengshen Liu
  • Huajun Li
Chapter
Part of the Springer Tracts in Civil Engineering book series (SPRTRCIENG)

Abstract

When the platform substructures do not have openings wide enough for installation vessels to move in, catamaran floatover method is the choice of platform integration. Two floatover vessels and the topsides form a catamaran. The mating operation procedure are the same as the HIDECK, except the involvement with two vessels. Catamaran floatover methodology has been successfully applied in both inshore and offshore platform integration. In general, the catamaran is formed at the location near the mating site, therefore the topsides will be transported from the yard to the selected location by a third vessel and then the topsides is transferred to the floatover vessels. This extra step operation need to be well prepared through intensive engineering efforts. Discussion in this chapter covers the operation details with the examples of CGBS inshore integration and the spar offshore integration. For these operations, floatover vessels do not need specially designed equipment besides grillages and sea-fastenings. Two other catamaran floatover methods using special equipment: the Versatruss and TML methods are also presented in this chapter.

References

  1. 1.
    Nordås, J.K.: Gullfaks—The First Norwegian Oil Field Developed and Operated By Norwegian companies. CMI Working Paper, Chr. Michelsen Institute, ISBN 82-90584-70-9Google Scholar
  2. 2.
    Lecture Notes: Lecture 15A.11—Superstructures II, ESDEP WG 15AGoogle Scholar
  3. 3.
    Bjørdal, B.N. et al: Mating of Large Integrated Decks to Concrete Gravity Structures, OTC 7502, Houston, Texas (1994)Google Scholar
  4. 4.
    de Bruijn, V.: Hibernia Development Project, Terra et Aqua, Number 73 (1998)Google Scholar
  5. 5.
    Zhang, Q.: “The Hibernia Development Project”, PT-2013 -Zhang, Coastal and Ocean Engineering ENGI.8751 Undergraduate Student Forum, Faculty of Engineering and Applied Science, Memorial University, St. john’s, NL, Canada March, 2013 http://journals.library.mun.ca/ojs/index.php/prototype/article/download/420/513
  6. 6.
  7. 7.
    Zhang, J. et al: Preliminary Concept on Dual-Barge Float-over Installation Method for Large Blocks, ISOPE paper, ISBN 978-1-880653-77-7, Beijing, China (2010)Google Scholar
  8. 8.
    Sun, L., et al: Multi-body Dynamic Analysis of Float-over Installation. Ocean Eng. 51 (2012)Google Scholar
  9. 9.
    Luo, M., et al.: US Patent#US2010/0221070 A1, Topsides Load-out to Barge Catamaran for Float-over Installation (2010)Google Scholar
  10. 10.
  11. 11.
    Bjørheim, P.: A Feasibility Study of the Versatruss System. Master’s Thesis, University of Stavanger (2015)Google Scholar
  12. 12.
    Khachaturian, J.E.: US Patent #4714382, Method and Apparatus for the Offshore Installation of Multi-Ton Prefabricated Deck Packages on Partially Submerged Offshore Jacket Foundations (1987)Google Scholar
  13. 13.
    Thompson, B. L., VERSATRUSS: An Innovative Alternative in Single-Piece Deck Installations and Salvage, OTC-8445-MS, Houston (1997)Google Scholar
  14. 14.
    Article: Twin Marine lifter—a novel Offshore heavy lift system. Marintek Mag. Rev. 3 (2008) ISSN 0801-1818Google Scholar
  15. 15.
    Edelson, D., et al.: Floatover Deck Installation on Spars, OMAE2007-29640, San Diego, California (2007)Google Scholar
  16. 16.
    Mahar, J.V. et al: Floatover Deck Installation for Spars, OTC 12971, Houston, Texas (2001)Google Scholar
  17. 17.
    Choo, Y. S.: Installation Engineering and Execution of Offshore Projects, Lecture Notes, The LRET Research Collegium, Southampton (2011)Google Scholar
  18. 18.
    Edelson, D., et al: Floatover Deck Installation on Spars, OMAE2007-29640, San Diego, California (2007)Google Scholar

Copyright information

© Science Press, Beijing and Springer Nature Singapore Pte Ltd. 2017

Authors and Affiliations

  • Gengshen Liu
    • 1
  • Huajun Li
    • 2
  1. 1.College of EngineeringOcean University of ChinaQingdaoChina
  2. 2.College of EngineeringOcean University of ChinaQingdaoChina

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