The OC3 (Offshore Code Comparison Collaborative) models were developed as part of IEA Annex 23. The models are based on the fictive 5-MW reference wind turbine with configurations of four different offshore support substructures. The models are based on an updated version of HAWC2 and are therefore not identical to the actual models used in OC3.
The models linked below all use 32-bit dlls and are compatible with 32-bit HAWC2 for Windows.