The Seafarer Act Article 7

Any person, who meets the requirements set forth in the preceding Article, can practice as a seafarer only after having filed an application for a competency certificate with the shipping administration authority and having obtained the competency certificate issued by the MOTC.
中文原文 船員法第7條
具有前條資格者,應向航政機關提出申請,並經主管機關核發適任證書,始得執業。

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