The Law of Ships Article 25
Under any of the following conditions, ship owners shall apply to the shipping administration authority at the port to apply for a special inspection:1. The ship is newly built.2. The ship is imported from abroad.3. The hull has been modified or the propeller has been altered.4. The intended use or type has been changed.5. Validity of the special inspection has expired.After passing the special inspection, a Ship Inspection Certificate be issued or renewed to the ship by the shipping administration authority, which shall be valid for five years. However, for passenger ship or cargo ship that is more than 20 years old, the validity period for issuing and reissuing the Ship Inspection Certificate shall not exceed two years.
中文原文 船舶法第25條
船舶有下列情形之一者，其所有人應向船舶所在地航政機關申請施行特別檢查：
一、新船建造。
二、自國外輸入。
三、船身經修改或換裝推進機器。
四、變更使用目的或型式。
五、特別檢查有效期間屆滿。
船舶經特別檢查合格後，航政機關應核發或換發船舶檢查證書，其有效期間以五年為限。
但客船、貨船船齡超過二十年者，核發、換發船舶檢查證書之有效期間不得超過二年。
一、新船建造。
二、自國外輸入。
三、船身經修改或換裝推進機器。
四、變更使用目的或型式。
五、特別檢查有效期間屆滿。
船舶經特別檢查合格後，航政機關應核發或換發船舶檢查證書，其有效期間以五年為限。
但客船、貨船船齡超過二十年者，核發、換發船舶檢查證書之有效期間不得超過二年。