Abstract
In recent years environmental problems such as global warming have become international issues. Research and development of renewable energy is one of those efforts. Especially in Japan wave-power is easily available because of island nation. So we work toward practical use of gyroscopic wave-power generation system. This paper mainly describes the at-sea experiment of the gyroscopic wave-power generation system. Compared to the established experiment, we conducted the experiment in larger wave condition in real sea. Then we confirm the performance of generator.