An individual may launch a vessel only in designated areas. Gasoline Engines. Except by park personnel in the performance of their duties, a vessel with a gasoline engine may not be operated on a lake, pond, or other impoundment of water in a State park. The Service may waive this prohibition for programs and events sponsored by the Department of Natural Resources. Restricted Areas. Vessels are prohibited in swimming areas and other designated areas. Limited Capacity of Lake. The number of private vessels permitted on a lake at a given time may not exceed the posted limit. Swimming from Vessels. An individual may not swim or dive from a vessel in a lake or impoundment operated by the Service. Harbor of Refuge. Except in designated areas or when used as a harbor of refuge, the overnight storage of private vessels in a State park is prohibited.