Experimental investigation of the effect of wave steepness on a damaged Ro-Pax ship model in regular waves


Şener M. Z., Yoon H. K., Nguyen T. T. D., Köse E.

20th International Ship Stability Workshop, Trabzon, Türkiye, 1 - 03 Ekim 2025, ss.13-21, (Tam Metin Bildiri)

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Basıldığı Şehir: Trabzon
  • Basıldığı Ülke: Türkiye
  • Sayfa Sayıları: ss.13-21
  • Karadeniz Teknik Üniversitesi Adresli: Evet

Özet

Understanding the roll dynamics of ships under varying wave conditions is essential for improving maritime safety, especially for Ro-Pax vessels that are particularly sensitive to stability changes. This study experimentally investigates the effect of wave steepness on the roll motion of a Ro-Pax ship model in both intact and flooded conditions under regular waves. The experiments were conducted by keeping the wavelength constant and varying the wave height to produce three wave steepness ratios: 1/50, 1/75, and 1/100. Tests took place in a 20 m × 14 m × 1.8 m wave basin, where the ship model was assessed under both head and beam wave conditions. The roll response was measured in each case to evaluate how wave steepness influences the ship’s dynamic behavior. The results show that increasing wave steepness leads to a significant amplification in roll motion, with observable differences between the intact and flooded states. These findings offer valuable insights for validating numerical models focused on roll dynamics and emphasize the importance of accounting for wave steepness in ship stability assessments. The study also supports the ongoing development of improved testing methodologies and more robust design guidelines for evaluating roll performance in waves.