Ключевые слова: background, banks, barrage, basalt, beacon, beacons, construction, control, cribs, dam, dutch, dutch landscape, dutch river, familie, gelderland, guidance, holland, landmark, mark, modern, nautical, navigation, nederland, netherlands, object, prevention, protection, risk, river, riverside, rocks, safety, security, shipping, sign, stone, stones, stream, surge, technology, transportation, waal, water,