By surveying main ports and watercourses in detail and producing nautical charts, we support vessels’ safe navigation and people’s marine activities. Also, we produce the electronic navigational chart (ENC), marine navigation.

We collect scientific information so as to hold a dominant position in the competition for expanding the maritime territory and securing resources, including the EEZ and the continental shelf. We also manage the territorial base point, the standard of delimitation with neighboring countries, and promote the international use of the East Sea and the international registration of Korean marine geographical names.

We operate the oceanographic observation network and the Ieodo Ocean Research Station; forecast and alert risks early, including tsunamis and abnormal waves; monitor sea level rise caused by global warming; and prevent marine disasters by predicting coastal erosion and flooding.

We provied information by surveying the topography of the waters of operations and observing marine phenomena. We also produce nauticl charts used for naval operations, and forge integrated marine/meteorological information systems for operations.

We investigate and manage offshore environments comprehensively, such as coastlines, foreshores, reefs, uninhabited islands, the environments. We also protect people's ownership and settle disputes by surveying sea borders.

We forecast tide time for safe foreshore experiences. We protect people’s lives by investigating the offshore currents of beaches, and providing marine information needed in sea parting, yachts, swimming, fishing, and more so as to improve people’s lives.

We take the lead in marine technologies through technical exchanges and cooperation with international organizations and advanced countries, including IHO, ICO, and GEO. Moreover, we transfer our marine techniques and experiences to developing countries so as to promote the national brand power and contribute to the international community.