windscreen calandkanaal par Jörn Schiemann Via Flickr : windscreen calandkanaal, rotterdam, 1985, architect / sculptor: maarten struijs & frans de wit; To protect ships on their way to the Maasvlakte from gusts, an almost 2-kilometer-long 'wind screen' was designed by municipal architect Maarten Struijs and sculptor and landscape architect Frans de Wit. The windshield was built between 1983 and 1985, when it was the largest in the world. It consists of a long series of imposing, semi-circular concrete elements, 25 meters high and it is 25% wind permeable. The canal wall is located at the height of the Caland bridge and ensures that shipping can take place with a wind force higher than 5. Without protection, the ships are in danger of colliding with the bridge or the quay.