Dear Xin,
I have not calculated this myself, but you could calculate it by hand by combining the mass and center of mass of the rotor/nacelle assembly of the NREL 5-MW turbine (from here: Using Aggregate Mass in ADAMS to Check NREL CS_Monopile.bmi - #2 by Jason.Jonkman), the tower, and the ITI Energy barge.
Best regards,