The Administrative Regulations on the Ship Radio Station Article 17

During the voyage of a ship encountering iceberg, flotage, storm and any situation causing serious damage to ships, the ship should inform the nearest coast station and the nearby ships of the aforementioned situation by using the safety communication.
中文原文 船舶無線電臺管理辦法第17條
船舶航行中,遇冰山、漂流物、暴風及其他對船舶航行構成嚴重危險性之情形者,應即利用安全通信,告知附近船舶及最近之海岸電臺。

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