Within the Sea Traffic Management (STM), a Port Call Message Format has been developed to enable the coordination of stakeholder activities regarding port calls by providing a standard format to share the necessary information on Estimated Time of Arrival (ETA) and Estimated Time of Departure (ETD).

To ensure sustainability the International PortCDM Council (IPCDMC), has supported the idea to change the Port Call Message Format into a Common Maritime Data Structure (CMDS) format and as such integrate it in the CMDS GI Registry currently managed by the International Hydrographic Office (IHO). The research institute RISE Viktoria, Sweden, has created a first draft of such a standard and given it over to IALA for further consideration.


IALA has informed the IPCDMC that they have assigned S-211 as the identifier for the completion of this draft standard through the responsible IALA committee and working groups. Once completed and adapted, S-211 will be part of the IALA domain within the CMDS GI Registry.

The STM Validation Project will demonstrate the STM concept in test beds in the Nordic and Mediterranean Seas, including around 300 vessels, 13 ports and 5 shore based service centres as well as using the European Maritime Simulator Network.