SOKO Donau (in Germany SOKO Wien) is an Austrian crime drama television series produced by ORF in collaboration with the German network ZDF. It is the sixth spin-off of the German crime series SOKO 5113 (SOKO München since 2015), launched in 1978. The show, which debuted on 20 September 2005 in Austria and 18 October 2005 in Germany, focuses on a Viennese police team responsible for investigating crimes committed on the Danube (German: Donau) river and its tributaries. The boat team operates in and around Vienna as well as Lower and Upper Austria, sometimes travelling all the way to Bratislava.