The Law of Ships Article 17
A ship owner who acquires a ship at a port other than the recognized port of registry may apply for a Provisional Certificate of Vessel's Nationality (Register) to the shipping administration authority at the port of calling or the port of registry, by submitting the relevant supporting documents of ship acquisition or original ship nationality. An application for registration of the ship shall be made pursuant to Article 15 herein within 3 months from the date of obtaining the certificate.
中文原文 船舶法第17條
船舶所有人在所認定之船籍港以外港口取得船舶者，得檢附取得船舶或原船籍國之相關證明文件，向船舶所在地或船籍港航政機關申請核發臨時船舶國籍證書，並應自領得該證書之日起三個月內，依第十五條規定申請登記。