The horisontal resolution of the computational mesh varies from 7.8 km in the central North Sea, 3.9 km in the western North Sea and coastal areas to 2.5 km in the Wadden Sea. The total model area is 484087 km2 and the mean depth is 80.8 meters. The computational mesh consists of 10147 polygons. The model has 31 layers and a total of 158848 computational cells. The mean element area is 38054 km2 and the spatial resolution range between 1069 to 9579 meters.