Dear Jason
In your attachments, when you calculated the second-order hydrodynamic coefficients by WAMIT, the second alternative foam of the FRC file was used.
But in your pervious answer, when you calculated the first order hydrodynamic coefficients, you always set the center of mass, and radii of gyration to zero in WAMIT( the first alternative foam of the FRC file was used) [url]About WAMIT model for 5MW OC3 Hywind - #5 by Jason.Jonkman]. So if I want to get the first and second order hydrodynamic coefficients from WAMIT that will be used in FAST, do I have to run two times of WAMIT with different FRC file?
Best regards