They include mandatory automatic identification systems on all ships over 500 tonnes in international waters, as well as a requirement that such ships have security plans and security officers.
作为强制规定，国际水域上的超过500吨的所有船只必须安装自动辨别系统，并且上述船只必须具备安全计划和安全官员。
They include mandatory automatic identification systems on all ships over 500 tonnes in international waters, as well as a requirement that such ships have security plans and security officers.
作为强制规定，国际水域上的超过500吨的所有船只必须安装自动辨别系统，并且上述船只必须具备安全计划和安全官员。
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