At 2 further barrages a breakthrough exists which cuts of a river bend. In total only 17% of the entire distance from the Rhine up to the mouth of the Rems lie in an artificial waterbed which means the river character dominates. On the last 32 km of the waterway in the area of the less water carrying upper river which is at the same time heavily used economically, almost the entire river bed had to be constructed artificially. Neckar at Stuttgart-Untertürkheim through heavily industrialized area The Neckar (Ne) is being administered after taking over step-by-step from the Neckar AG since 1970 from Mannheim to Plochingen as a Bundeswasserstraße (literally „federal waterway“) by the water- and navigation offices Stuttgart and Heidelberg. The Federal Republic is owner of the waterway. Sport boats including paddle and rowing boats are subject to the Binnenschifffahrtsstraßen-Ordnung, valid on the Neckar which for example defines the need of identification and the rules for the right of way. 159 water abstraction points and 628 water intakes show the heavy water economical usage. On the Neckar, which is nowadays classified as a "Wasserstraße des Typs Va" (waterway Type Va) from km 201.5 at Plochingen to its mouth (km 0), 7332 river boats transported in 2012 7.5 million tons. The largest parts of these tons were made up of construction material (1,9 Millionen t) and coal (1,6 Millionen t) as well as salt (1,3 Millionen t). 21.000 TEU Containers were transported. Leisure ships run by various companies travel on the river for tourists. On the upper Neckar the passenger navigation is handeld by the company Neckar-Käpt’n. On December 8, 1954 the "Neckarhafen Plochingen GmbH" was founded. From 1960 until 1963 the last barrage was constructed near Deizisau. The construction of the "Neckarhafen Plochingen" started on April 29, 1964. The first ship landed in Plochingen on July 12, 1968 after it had been blessed with the name „Plochingen“ by Gertrud Hartung, the mayors wife. In the harbour 15 companies generated an annual revenue of about 500 to 600 Million Euro in 2004.