Thank you very much @Jason.Jonkman.
I’ve read the post you mentiond about the shifting of potential-flow data from the CoG to a different point here.
Can I use the TransMat^T to convert IMASS, IDAMP and ISTIF data in IEA-15-240-RWT_2nd.frc to transfer them to CG using the following relation?
F_cg = TransMat^T * F_swl
Is this TransMat is defined considering the origin at swl with z-axis upward?
Regards,