Abstract: Shore erosion control structure has a plurality of block members laid on a beach along a shoreline to form a wall having a plurality of parallel rows and vertical courses. Each of the block members has substantially horizontal, seaward facing openings within which are spaced apart baffles. The baffles are removably accommodated in the openings so as to be adjustable and provide tortuous passages through the wall through which water and entrained sand may flow. Water containing entrained sand flowing through the tortuous passages has its energy dissipated so as to enable the entrained sand to be deposited at the landward and seaward sides of the wall, as well as in the openings through the block members, thereby preventing the erosion of the beach and, in many cases, enabling restoration of beaches that have been eroded.

Abstract: A seawall structure adapted to combat erosion of a shoreline by wave action comprises a perforate wall arranged along and substantially parallel to the shoreline and having openings therethrough facing seaward through which the water of incoming waves may pass. Each opening through the wall forms a tortuous passage for the water so that the energy of the water is dissipated gradually as it flows through the wall, thereby enabling sand entrained in the water to be deposited landward and seaward of the wall, as well as in the openings of the wall. The wall is composed of blocks arranged in horizontal rows and vertical courses, the upper edges of the blocks in the outermost rows projecting above the upper edges of the blocks of the next adjacent rows to provide an interlocking relationship between blocks of the outermost rows and the blocks of the next adjacent rows, as well as to provide for vertical deviations in the openings through the wall.