CISE will have to bring added value and complementarity to existing maritime data systems, services and sharing processes. So far use cases implemented in CISE are the use cases that have already been identified (for example maritime picture, investigation, capacity sharing) during the research project. CISE enriches such use cases with information shared by all the Public Authorities that are part of the CISE network. A process has started to further enhance use cases and to identify new ones, based on the operational needs of the CISE participants.