National Maritime Spatial Planning Strategy (NMSPS) will by the strategic framework of maritime spatial planning in Greece, setting priorities and giving strategic guidance for more elaborate maritime spatial plans.

NMSPS will cover all the Greek maritime territory and will help achieve a harmonious coexistence of all maritime activities and uses, the sustainable growth of maritime activities, the sustainable use of marine resources, the protection of the environment and the biodiversity conservation through a synthesis of ecological, environmental, economic, social and cultural parameters, taking into account the principles of sustainable management and assuring the climate change resilience. It will be setting a vision for the future based on the ecosystem-based approach, the land-sea interface and the resilience to climate change.
It will set the framework in order to implement maritime spatial planning in broad areas but also to plan regionally or locally where issues or conflicts raised need more elaborate spatial planning.

It will continue to enhance the public participation as a prerequisite in all stages of spatial planning in Greece. Within that context, multi-level governance will perform as a key means for management and implementation of spatial planning.

This process will take into account the outcomes of the project Supporting maritime spatial Planning in the Eastern Mediterranean (SUPREME ), (a transboundary project financed by the EU where Greece, Italy, Croatia, Slovenia and UNEP/MAP, PAP/RAC participate) especially in transboundary issues.