Abstract
Offshore wind turbines are new types of structures with no track record of long-term performance. This chapter discusses the challenges in the design of offshore wind turbines with a focus on Chinese waters. The main loads acting on a wind turbine are discussed together with the specific case of Chinese waters where, in some locations, typhoon/cyclone and earthquake governs. The relatively soft and complex multilayering ground conditions in the Chinese water are also discussed. The challenges associated with dynamic soil-structure interaction are also highlighted.