Seafarer's Service Regulations Article 15

Should any unregistered cargo be discovered on board by each department’s director or any level of seamen, the master shall be notified to immediately handle the matter. The master shall be required to jettison any such cargo that are found to be illegal items, lethal items, or items that may damage the vessel or cargo on board.
中文原文 船員服務規則第15條
船舶各部門主管及各級海員發現船上有未經報明之貨物時應立即報告船長處理。
該項貨物為違禁品或有致人命、船舶或貨載受損害之虞者,船長得將該貨物投棄。

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