Maritime Act Article 11

The disposal of a co-owned ship and any other matters relating to the common interests of the co-owners can only be carried out with the consent of over half of the co-owners and the majority of votes based on the value of the interest of each co-owner.
中文原文 海商法第11條
共有船舶之處分及其他與共有人共同利益有關之事項,應以共有人過半數並其應有部分之價值合計過半數之同意為之。

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