Numerical simulation of anchored ship motions due to wave and wind forces for enhanced safety in offshore harbor refuge

Kenji Sasa, Atilla Incecik

Research output: Contribution to journalArticle

11 Citations (Scopus)


It is essential to maintain the safety of ships that are anchored in offshore harbors to avoid the influence of storms. Recently, marine casualties have been reported on anchored ships stranded in coastal areas after their anchors dragged in stormy weather. However, there have been very few studies on anchored ship motions in waves with dynamic mooring forces. In this study, information on the safety of ships in offshore harbors during storms was gathered through a nationwide questionnaire. Because previous numerical models for reproducing reported situations of marine casualties appear flawed, this study considers the dynamic calculation of chain forces and compares the results with those obtained by the catenary method. A new algorithm is constructed to reproduce the dragging anchor and grounding in waves and winds .This study is expected to contribute to the improvement of port planning related to anchorage.
Original languageEnglish
Pages (from-to)68-78
Number of pages11
JournalOcean Engineering
Issue numberApril
Early online date23 Feb 2012
Publication statusPublished - Apr 2012



  • offshore harbor refugee
  • numerical simulation
  • anchored ship motions
  • wave and wind force

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