It is not provided in Property Law when hypothec on the area usage right is created,and shall apply by analogy to the creation rules of hypothec on the building land usage right and hypothec on the land management right,ie,hypothec on the area usage right is not created until registration.

Namely, the mortgage of the right to the use of the land, the mortgage of constructing project, the construction contractor s compensation-receiving priority and the mortgage on forward house property may exist in the same building.

In the view of the deficient pressure of land resource,putting maritime right of use to free market is a good efficient way.

This article proceeds with research of the maritime space in the maritime right of use , then defined the maritime right of use, and makes a reservation from legal property to maritime space, analyzes maritime space settlement , change and stop of maritime right of use, explained the effect of the maritime right of use and conflict of rendering a service finally .

In order to suit the development of the marine development undertakings, our country has recognized that it is necessary to strengthen marine management and establish a law system for sea area management step by step, the right of using sea area is the core of the whole system.