Seafarer's Service Regulations Article 28

When entering or leaving port, the vessel shall notify the radio station stipulated by the port authority of its position, course, speed, and the names of departure and destination ports.
中文原文 船員服務規則第28條
船舶於入出港前,應向港口管理機構指定之電臺報告船舶位置、航向、航速、出發港及目的港口名稱。

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