The Enforcement Rules of the Ship Registration Law Article 18

If there are more than one obligee entitled to a registration, the names of co-owners shall be all listed in the column of "Subject". This requirement shall also be applicable if more than one obligor are entitled to a registration.
中文原文 船舶登記法施行細則第18條
登記權利人不止一人時,事項欄之登記應將共有人姓名列記。
登記義務人不止一人時亦同。

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