Ban on bottom trawling in all of hong kong waters except for designated shrimp trawling areas in southern waters where shrimp productivity is greatest 除了在本港南部虾类最繁盛的指定水域仍然容许虾拖作业外，禁止底拖网船在全港其他水域捕鱼。
2.
Marine traffic security management is one of the most important parts of marine traffic engineering . it is defined as the management on vessels and marine area for avoiding pollution and the damage of vessels and cargoes 水域交通安全管理是海上交通工程学中的一项重要内容，是指为防止船舶和货物的损害以及防止海上污染而对指定水域内船舶行为的总体和相关水域环境所实施的管理。
