In a monograph the originals of decisions of the International tribunal are investigational on a naval law on спорам about immediate liberation of the detained courts, about the acceptance of temporary measures of legal defense, at delimitations of marine spaces, and also conclusion of Chamber on спорам touching sea-bottom. A question is investigational about participation of the International tribunal on a naval law in development of norms of international marine law. A role is shown International tribunal on a naval law in the system of organs of permission of international marine spores. The features of competense of the International tribunal are reflected on a naval law in a relationship with other courts and arbitrations.Positions and recommendations of research can be used in-process practical organs of Russian Federation, accountable for realization of foreign-policy activity in area of research and uses of the World ocean. Text of monograph can also become basis for the corresponding special course in teaching of international law.The monograph studies decisions of the International Tribunal for the Law of the Sea concerning disputes on the immediate release of detained vessels, interim measures of legal protection, maritime delimitation, as well as advisory opinions of the Seabed Disputes Chamber. Investigated is the issue of participation of the International Tribunal for the Law of the Sea in the development of international maritime law. The role of the International Tribunal for the Law of the Sea in the system of settlement of international maritime disputes is demonstrated. The features of the competence of the International Tribunal for the Law of the Sea in relation to other courts and arbitration are reflected.Terms and recommendations of the study can be used in practical work of the governmental bodies of the Russian Federation responsible for conducting the foreign policy activities in the exploration and use of the oceans. The text of the monograph may also be the basis for the corresponding special course in the teaching of international law.