Ключевые слова: block, blocks, blue, breakwater, breakwaters, cement, channel, concrete, construction, deep, design, dolos, engineering, erosion, force, geometric, green, groyne, harbor, harbour, heavy, industrial, interlocking, lake, light, middle, nature, nobody, ocean, outdoor, port, protection, safe, sea, seawall, shape, shield, structure, united, wall, waves,