Seafarer's Service Regulations Article 55

Communication between two vessels shall not interfere with the broadcast of coastal radio stations. This can be accomplished by terminating communication or changing frequency when requested to do so by a coastal radio station.
中文原文 船員服務規則第55條
船舶電臺互相通信時,應避免干擾臨近海岸電臺之工作,如海岸電臺要求停止通信時,應立即停止或更換頻率。

English translation for reference only; the Chinese text prevails. Not legal advice.