Multiline anchors for the OC4 semisubmersible floating system Conference Paper uri icon


  • Copyright 2017 by the International Society of Offshore and Polar Engineers (ISOPE). As the offshore wind industry trends towards deeper waters and floating offshore wind turbine (FOWT) technology, the high capital cost of these systems remains a significant barrier. A multiline anchor concept may reduce this cost by allowing FOWTs to share anchors, instead of each floating platform being moored by its own set. Multiline and single-line anchor dynamics are determined via simulation of the NREL OC4 semisubmersible floating platform under a range of load cases and wind & wave directions with spatio-temporal coherence of wave loading. Results show that the multiline anchor experiences lower mean and maximum forces compared to the single-line anchor, but the forces are applied over a large directional range. An examination of scale effects reveals that the multiline concept would produce the greatest reduction of total number of anchors in large, commercial scale wind farms.

published proceedings

  • Proceedings of the International Offshore and Polar Engineering Conference

author list (cited authors)

  • Fontana, C. M., Arwade, S. R., DeGroot, D. J., Hallowell, S. T., Aubeny, C., Landon, M., ... Ozmultu, S.

complete list of authors

  • Fontana, CM||Arwade, SR||DeGroot, DJ||Hallowell, ST||Aubeny, C||Landon, M||Myers, A||Hajjar, J||Ozmultu, S

publication date

  • January 2017