The commercial boat rental for the exercise of public use by third parties (boats with a length of up to 9.20 m) regularly requires a navigation permit if the providers or organizers (including entrepreneurs acting on a supra-local basis) will essentially always act purposefully on a specific body of water or one or more specific stretches of water. Only if there is a complete lack of reference to a body of water can such a reference be dispensable. It must then be the responsibility of the lessee to collect the vehicle from the lessor and return it to the lessor. In addition, it must be up to the renter which body of water he uses.
Rafting tours with boats longer than 9.20 m must always be approved by the local district administrative authority (lower water authority) in terms of navigation law.
The district administrative authority examines the application in particular with regard to nature conservation, water management, navigation, fishing and safety aspects. The district administrative authority may involve the specialist agencies concerned in this process.
The district administrative authority may issue legal ordinances, general orders or orders in individual cases for the exercise of public use. In particular, the district administrative authority may issue regulations to prevent dangers to life, health, property, property-like rights or property, to maintain the safety and ease of traffic, to protect nature, in particular flora and fauna, or the water body and its banks, to regulate recreational traffic or to ensure the use of a water body on the basis of permits, authorizations, old rights and old powers or the owner and riparian use.