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Abstract

Recently, it has been necessary the purification of basin water in port and harbor for utilizations, such as live fish preservation facilities and amenity space. Therefore, various types of water-exchange breakwater by wave energy, tidal current and sea level exchange have been developed. The authors developed a wave dissipating caisson breakwater having a function of seawater exchange. This caisson is a permeable slit caisson with a submerged vertical plate in a water chamber, and generates a one-way flow from offshore to harbor.In this paper, through the field investigation, we proved the water inlet ability of this water-exchange breakwater that was constructed in MISAKI fishing port, and compared the result of the hydraulic model test with the result of the field investigation.