The Administrative Regulations on the Ship Radio Station Article 6

The communications and related electronic operations of ship radio station should be conducted by seafarers certified by the competent authorities, in charge of agriculture or navigation careers, with the expertise of ship radio communication.One dedicated seafarer should be designated for the major responsibility of radio communications while a ship is in distress. The radio logbooks should be kept for entering all the detail operation.
中文原文 船舶無線電臺管理辦法第6條
船舶無線電臺應由各目的事業主管機關認可具有船舶電信專長之船員,負責操作從事通信及電子作業。
船舶無線電臺應備有船舶無線電臺日誌,指定一員於遇險事故中負無線電通信之主要任務;並將電臺操作情況詳實記錄。

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