These provisions apply also to the floating of timber on navigable waterways.
Only the Commonwealth imposes on foreign ships and their cargoes other or higher charges than on German ships and their cargoes.
For the procurement of means for the maintenance and development of the German system of waterways the Commonwealth may by law call on the shipping interests for contributions also in other ways [than by tolls].
ARTICLE 100
To cover the cost of maintenance and construction of inland navigation routes any person or body of persons who in other ways than through navigation derives profit from the construction of dams may also be called upon by national law for contributions, if several States are involved or the Commonwealth bears the costs of construction.
ARTICLE 101
It is the duty of the Commonwealth to acquire ownership of and to operate all aids to navigation, especially lighthouses, lightships, buoys, floats and beacons. After they are taken over, aids to navigation may be installed or extended only by the Commonwealth or with its consent.