One key objective of maritime administration is to ensure safer waterways, protection of environment and provide more economically effective environment for ship traffic. So it is necessary to extend its range of management.

• 为了更有效地实施水上交通管理 ；提高交通效率以及保护海洋环境 ；主管机关的管辖区域有必要扩展到更大的范围 .