Each of the 148 independent States of the world has a particular set of interests in the oceans; these interests are reflected in policies regarding the international law of the sea. By analyzing the nature of national marine interests it is possible both to develop a generalized model which can be applied to any one of the world's countries, and to divide States into groupings, depending on their physical, economic, historic or other characteristics with respect to the marine environment. The four basic components of the national marine interest are accessibility, investment, dependence and control. These components are important to an understanding of the positions of the 30 land‐locked, 20 shelf‐locked and 98 other countries in current and upcoming law of the sea negotiations.