This paper presents a wind tunnel test procedure on offshore structures and some examples of test results on a model of semisubmersible oil drilling rig compared with calculated values by ABS (American Bureau Shipping) Rules. A model is placed in a water tank filled with water and high viscous fluid on the surface to protect water from scattering due to high speed wind and aid in heel changes. So the tests in relatively high speed wind at any model conditions requested by NMD (Norwegian Maritime Directorate) Rules can be easily realized.
