Abstract
The technical development of utilizing natural energy has been conducting since several decade years ago, because the global warming and the sea level rise are realizing to human beings. In order to facilitate the technology of utilizing wave energy, which is one of the natural energy, this study examines the hydraulic performance of wave activated pump system which is arranged in front of the existing vertical breakwater. This system is expected to amplify wave motion even under calm wave conditions, which are sometimes observed in a bay, in order to expand the effective range of waves which can be used for electronic power generation. A series of hydraulic experiment were conducted in this study to investigate the characteristics of wave amplification in the wave activated pump. The effect of a curtain wall-type barrier, which is installed to protect pump system, on wave amplification were also investigated here.