Abstract
The Japan Ocean Industries Association (JOIA) has been conducted the feasibility studies on the floating offshore wind power facilities. This paper summarizes the present state of the foundation types of the offshore wind power facilities in Europe as well as the studies of the JOIA, especially the concept of the struct-urety pes and the mooring systems of the floating structures. Also the studies on the optimal structure type in the water depth between 20m and 200m are presented.
