New Harbour pier with reinforced concrete dolosse on one side, drone dolly

new harbour hermanus pier protected dolosse breakwater engineering quay maritime harbor drone coastal management walker bay overberg concrete block reinforced reinforced concrete absorb wave action coastal dolos artificial reef revetment aerial wavedissipating protection wave action energy concrete patterns motion of the ocean ocean swell surge energy absorb wave action sea overstrand western cape destination seaside coast coastline shoreline deflect atlantic harbour foamy