Harbors provide shelter for ships from storms and are areas for storing vessels. They have bars at their entrances and can be artificially created. The largest is Jebel Ali harbor in Dubai. Harbor management plans are used to determine appropriate uses of harbors, balance activities, and protect natural resources. They involve zoning water areas and resolving issues like dredging. The plans graphically depict allowed uses in harbor areas to guide decision making. They require government approval and effective management of harbors infrastructure requires understanding their environmental impacts and improving conditions.