Experimental and numerical study of a containership under parametric rolling conditions in waves

• Scaled model experiments have been conducted to study the occurrence of parametric rolling on a containership.
• Forced rolling tests were also performed with the ship model in order to investigate its roll damping characteristics.
• The experimental data of this containership is compared with results from a non-linear time domain model.
• The parametric rolling conditions associated with different viscous roll damping models is discussed.

A set of scaled model experiments have been conducted at HSVA towing tank to study the occurrence of parametric rolling on a containership in regular and irregular waves. Herein the performed model tests are described and the experimental results are presented. Forced rolling tests were also performed with the ship model in order to investigate its roll damping characteristics. By means of these tests the roll damping coefficients were determined for different maximum roll amplitudes and advance speeds. The experimental data of this containership is compared with results from a non-linear time domain model, where the prediction of maximum roll amplitude under parametric rolling conditions associated with different viscous roll damping models is thoroughly discussed.