The health of the global ocean environment is of critical importance. Planetary limits for climate change and biodiversity are being reached, and unsustainable resource management practices are rampant.  Space-based Maritime Monitoring has proven to provide foundational support for sustainable management of ocean resources.  In the Keynote, John will provide a high-level overview of ocean problems, space-based maritime monitoring, the beneficiaries and outcomes of the application of space technology in this area.