The Enforcement Rules of the Ship Registration Law Article 20

Any interim registration shall be recorded in the corresponding column of "Subject", but a blank space should be reserved in the left side thereof.The formal registration, which is made after the interim registration, shall be recorded in the blank space indicated in the previous paragraph.
中文原文 船舶登記法施行細則第20條
暫時登記,應登記於相當之事項欄內。
但其左方須留餘白。
暫時登記後為正式登記時,應登記於前項餘白。

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