AbstrakIndonesias sea territory is particularly important in uniting the country, as the sea is a medium for interconnectivity; a medium for national integrity; a medium for resources; a medium for diplomacy; and a medium for national defense and security. This paper will focus on the seas significance to Indonesias national unity in its role as a medium for interconnecting the countrys many islands, and the implications thereof to Indonesias national security and defense. This paper will within this context discuss in particular the reclamation of Jakartas north coast. This research applies a normative empirical methodology, and intends to provide a scientific basis for the argument that as Jakartas coastline is crucial in terms of national defense and security matters, the coastline should therefore be managed by a state agency and remain publicly accessible.