The Law of Ships Article 65

The owner of the following yachts shall apply to the shipping administration authority at the port of calling for implementation of periodical inspection every two and a half years from the date of passing the special inspection within 3 months before and after the due date:1. Non-private yachts2. Private yachts of a full length of 24 meters or above.3. Private yachts of a full length less than 24 meters, and of more than 12 member capacity on board in total.Yacht of an age more than 12 years shall apply for implementation of periodical inspection every one full year of age within 3 months before and after the due date.After passing the periodical inspection, the yacht shall be given endorsement on the Certificate of Yacht by the shipping administration authority.
中文原文 船舶法第65條
下列遊艇之所有人,應自特別檢查合格之日起,每屆滿二年六個月之前後三個月內,向遊艇所在地航政機關申請施行定期檢查:
一、非自用遊艇。
二、全長二十四公尺以上之自用遊艇。
三、全長未滿二十四公尺,且乘員人數超過十二人之自用遊艇。
遊艇船齡在十二年以上者,應於船齡每屆滿一年前後三個月內,申請實施定期檢查。
遊艇經定期檢查合格後,航政機關應於遊艇證書上簽署。

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