Regulations for Passenger Ship Administration Article 22

In no case shall any passenger ship be allowed to carry passengers on weather decks when the ship navigates any outer sea route unless approved by the shipping administration authority or ship register institute commissioned by the administration authority (hereinafter referred to as “ship register institute”).
中文原文 客船管理規則第22條
客船未經航政機關或主管機關委託之驗船機構(以下簡稱驗船機構)認可,不得在露天甲板上搭載乘客。

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