Education and practical training of the crew members in water transport have been directed towards harmonisation within the EU. One of the basic goals of the project HINT (Harmonized Inland Navigation Transport through education and information technology) is the implementation of inland navigation simulators into the educational process. They might become an alternative way for practical training of crew members in near future. In this article we analyse the requirements for the functions and complexity of an inland navigation simulator in the educational process within the Danube region. The analysis comes from the research that was carried out by the organisations that work in Inland Water Transport (IWT) in the Danube region in October 2013.