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

9 Citations (Scopus)

Abstract

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.
LanguageEnglish
Pages68-78
Number of pages11
JournalOcean Engineering
Volume44
Issue numberApril
Early online date23 Feb 2012
DOIs
Publication statusPublished - Apr 2012

Fingerprint

Ports and harbors
Ships
Computer simulation
Anchors
Mooring
Electric grounding
Numerical models
Planning

Keywords

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

Cite this

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abstract = "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.",
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Numerical simulation of anchored ship motions due to wave and wind forces for enhanced safety in offshore harbor refuge. / Sasa, Kenji ; Incecik, Atilla.

In: Ocean Engineering, Vol. 44, No. April, 04.2012, p. 68-78.

Research output: Contribution to journalArticle

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