Experimental assessment of intact and damaged ship motions in head, beam and quartering seas

E. Begovic, G. Mortola, A. Incecik, A.H. Day

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54 Citations (Scopus)


This paper presents an extensive study on the experimental prediction of motions for the well-known 5415 frigate hull in intact and damaged conditions. The experimental campaign is conducted for two geosim models, 1/100 and 1/51 scale, at zero speed in head, beam and quartering seas. All experimental results for 1/51 model are presented as 1st and 2nd order RAO, commenting on physical reasons for second order response occurrences. The results show the changes in motion responses when a ship hull is in damaged condition, they highlight the model scale effects and demonstrate the comparisons between the tests in which the model may freely drift and those in which the mean position of the model is restrained. For damaged ship in free drift tests the damage opening orientation is varied and its effect on RAO and free drift velocity is commented.
Original languageEnglish
Pages (from-to)209–226
Number of pages18
JournalOcean Engineering
Issue number1
Publication statusPublished - Nov 2013


  • experimental assessment
  • intact
  • damaged
  • ship motions
  • head
  • quartering seas
  • beam
  • damage opening orientation
  • geosim models
  • intact ship motions
  • damaged ship motions
  • free drift test


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