East revetment in length of 895m, south revetment of 982.7m, north revetment of 375m, breakwater of 675.87m, slope protection of 441.35m. South east revetment is constructed with rubble mound sloping structure, outer slope is built with dolosse blocks; Rubble mound sloping structure with dolosse blocks applies to the unshielded north revetment and rubble mound sloping structure with blocks for the shielded north revetment.