The effect of side hull arrangements on the motions of the trimaran ship in waves

Ming Chung Fang, Genc Yue Too

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


In the paper, the three-dimensional potential theory based on the source distribution method is adopted to analyze the effect of side hull arrangements on the motions of a trimaran ship traveling in regular waves. Neglecting the steady flow effect, the authors simply apply the three-dimensional pulsating source incorporating the panel method to solve the corresponding diffraction and radiation problems. The hydrodynamic interactions among the main hull and side hulls are considered in the calculations of the exciting forces, added masses and damping coefficients, which are applied to solve the six degrees of freedom motions of the trimaran ship. A trimaran ship model with different stagger and clearance is analyzed. Comparing the results with the existing experimental data shows that the present theoretical prediction method is generally satisfactory, which means that the prediction method based on the three-dimension pulsating source distribution technique is still an efficient tool to analyze the corresponding seakeeping problems for the trimaran ship. The analytical results indicate that the trimaran ship design with smaller stagger and larger clearance is generally advantageous if the seakeeping performance is considered.

Original languageEnglish
Pages (from-to)27-37
Number of pages11
JournalNaval Engineers Journal
Issue number1
Publication statusPublished - 2006 Dec

All Science Journal Classification (ASJC) codes

  • Ocean Engineering


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