Marine Research Infrastructures and observing systems or networks play an important role in improving the understanding of the Ocean's functioning by delivering fit-for-purpose observational data, providing access to observation and experimentation tools, and providing services to a broad range of users. For inter-comparability of observations and interoperability of data, but also for the sustained development and efficient operation of ocean observing systems in Europe and globally, sufficient information and data sharing, collaboration and coordination of actions are needed to avoid duplications and use of available resources efficiently. JERICO has taken steps to foster collaboration with other European marine RIs, as well as with the national RIs and the non-European OOS. The JERICO S3 task T2.5 aimed to interface with monitoring programmes, non-European Ocean Observing Systems (OOS) and the political realm. In this deliverable, we focus on the interactions with non-European OOS and JERICO to demonstrate the synergies, needs and achievements for continued collaboration around common issues of technological and societal concern. The current actions in this regard have been mainly focussed on the international collaboration options along the Atlantic coast, but also in neighbouring areas in the Black and Mediterranean Seas.