Critical issues are those issues which have an average ranking above 1 in 4.
The solution of the critical issues will have a significant impact on the large-scale development of offshore wind energy (i.e. if no solution is found for this issue, the development of offshore wind energy will be limited or even prohibited). These issues are also not easily manageable with existing technology, and these issues will be important in the short-term (i.e. before 2010).