Dear Francisco,
Yes, the FAST / OpenFAST model of the OC4-DeepCwind semi as provided in the CertTest / r-test are fully consistent with the specifications report 60601. The total mass of 1.3473E7 kg includes the mass of the water ballast. However, in this FAST / OpenFAST model, only the steel mass is considered in ElastoDyn; the water ballast is included in the strip-theory solution of HydroDyn.
Best regards,