Dear Yu Lei,
For hydro_M, you could use the hydrodynamic added mass from WAMIT at a given frequency e.g. the zero-frequency limit.
For hydro_K, you can use the hydrostatic restoring from WAMIT, augmented with system weight e.g. as discussed in the following forum topic: BModes : Input parameters about tower support subsystem - #2 by Jason.Jonkman.
For mooring_K, you can use a linearized form of the mooring matrix e.g. as calculated by MAP++ as discussed in the following forum topic: Force-Displacement relationship of OC4 DeepCwind Mooring sys - #6 by Jason.Jonkman.
Best regards,