Regulations for Passenger Ship Administration Article 19

The term "passenger deck" when used herein shall mean every tier or every part of the decks above the lowest passenger deck used for passengers.
中文原文 客船管理規則第19條
本規則所稱乘客甲板,指最下層乘客甲板以上可供乘客使用之每一層或每一部分之甲板。

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