Dear Daniel,
We obtained the data presented in Table 1 using the aggregate mass tool of MSC.ADAMS – see my post dated Jun 07, 2013 in the following forum topic for more information: Using Aggregate Mass in ADAMS to Check NREL CS_Monopile.bmi - #4 by Lingling.Yin.
You could also obtain these properties using the FAST v7 linearization if you set up your model to eliminate the platform and tower and locate the platform reference point at the yaw bearing.
Best regards,