Characteristics of the wave group of parametric rolling for the C11 container ship amid head random waves

Abstract

This study investigates the correlation between ship-encountered wave groups and the status of ship parametric rolling while focusing on the parametric rolling of a container ship in random waves. The rolling amplitude is used to define the time segment of significant parametric rolling based on the parametric excitation rolling test of the C11 container ship in irregular waves. The wave group method then analyzes the ship's characteristics when it encounters characteristic wave groups during the selected parametric rolling segments. Results show a strong correlation between the ship-encountered characteristic wave groups and the intensity of ship parametric rolling. The number and length of the runs of characteristic wave groups have a significant impact on the severity of ship parametric rolling in random seas.