A harbour is a natural or artificially created or separated section of water on which ships can be loaded and unloaded. Such areas are generally classified as open space.
Note: In contrast, the docklands of a harbour are generally dedicated to industrial and commercial activities, and thus are part of the settlement area.
[Source: AdV (2008): GeoInfoDok, ATKIS-Objektartenkatalog Basis-DLM, Version 6.0]