Panel methods based on potential flow theory have been widely employed for wave-structure interactions, since these methods could provide fast, reliable and accurate predictions for the forces acting on and the motions of the marine structures if the strong nonlinear forces are not included in the analyses. In reality, some panel methods can be regarded as the industry standards, and also some open sources are available. The comparisons in this research work include: 1) the comparison between WAMIT and HAMS; 2) the comparisons to see the improvement using the options of irregular frequency removal (IRR); 3) the comparisons on the original TALOS and the circular TALOS; 4) the comparison for the incomplete panels on the circular TALOS; 5) the comparison for the overlapped panels on the circular TALOS.
