This report outlines a set of key takeaways and accompanying recommended actions to engage a broad range of stakeholders in improving ocean data and knowledge sharing and harmonization across borders to support data-driven maritime/marine spatial planning (MSP) and better informed sustainable ocean management. In order to begin operationalizing these outcomes, each key takeaway offers a set of case studies to guide best practice and to highlight innovative solutions. These key takeaways and recommendations, accompanying actions, and case studies were shared during multi stakeholder dialogues that gathered ocean industry, UN specialized organizations, public authorities, policy actors, academics and other knowledge brokers specialized in ocean data.