Regulations for Seafarer Training, Examination and Application for Certification Article 10

The third-class engineers shall refer to the Class A crew of the marine engineering department serving on ships with a power less than 750 kilowatts within 300 nautical miles for domestic routes and directly cross strait.
中文原文 船員訓練檢覈及申請核發證書辦法第10條
三等輪機員指在主機推進動力未滿七百五十瓩航行於國內航線及兩岸直航港口間距離三百浬以內船舶上服務之輪機部門甲級船員。

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