Digitalisation is a driving force for enhanced coordination and synchronisation of maritime supply chain operations, and as a result the availability of digital data sources is increasing. Much of the data benefits from being visualised for specific needs, such as in the coordination of port call operations where the multitude of actors, constituting a self-organised ecosystem, share data among themselves to create situational awareness based on secure digital data streams. This means presenting shared data in real-time in a standardised format to generate value for the maritime industry. As port call operations are complex and engage multiple actors, different visualisation tools are useful to address the many concerns raised by the different actors. However, this requires that a visualisation is optimised to suit each actor involved in a port call, e.g. a pilot’s view or a terminal’s view. These visualisations however need to use the same data feeds to ensure the different perspectives are consistent. This chapter elaborates on how to create meaningful data visualisations providing decision support to enable distributed coordination in self-organised ecosystems involving multiple actors.