In 1997, the Kühlungsborner Bathing Beach received this award for the first time, the Boat Harbour in 2007. The certification must be renewed annually and an extensive catalogue of criteria will be met, under the following areas:
Places or sports clubs that can decorate themselves with the "Blue Flag" are invited to sensiblerem dealing with the environment and nature. In addition, tourists and residents must be enlightened in order to behave in an environmentally friendly manner.
Top priority: waste (e.g. waste oil and bilge water) must be disposed of properly.