In this paper the main idea of my PhD research is described. We aim to analyze the operational performance of intermodal networks including inland navigation. The intermodal hinterland network of the port of Antwerp serves as the real-world application on our study. Characteristics of the inland waterway network in Belgium are discussed. From this description our research objectives are further formulated. The research methodology comprises three phases. The first phase of the research aims at gaining an insight into modelling techniques in the field of operations research applicable to intermodal transport. The second phase consists of designing a discrete event simulation model of traffic inthe port of Antwerp and its hinterland terminals in Belgium. This model will be used to analyze the consequences of various policies intended to improve the efficiency of barge transport. In a third phase we intend to investigate whether a central planning of containers on barge transport. In a third phase we intend to investigate whether a central planning of containers on barge leads to efficiency improvements in the intermodal network. An overview of existing planning models for intermodal networks is given in order to position oour research in scientific literature. Finally, expected results are formulated.