Deputy department level. According to the official website of China Municipal People's Government, Beihai Marine Police Department is an integral part of Beihai Public Security Bureau, in which the director is the main department level and the deputy director is the deputy department level. The main duties of the Deputy Director of Beihai Marine Police Bureau are to draw up marine development plans, implement maritime rights protection and law enforcement, and supervise and manage the use of sea areas and marine environmental protection.