Abstract
In "Sanyo District" of Shimonoseki Port Coast, shore protection against overtopping by stormy waves and overflows by storm surge are required due to the geographical features of low land less than high tide level. The projects implemented so far are composed mainly of coastal revetments with additional sluice gate, land gate, a drainage pumping station and others. In these projects, operation system for maintenance of the project facilities and reduction of the construction cost were issues to be settled. Therefore, the shore protection works are reviewed and examined from the view of life cycle cost of construction and maintenance of the facilities.