Regulations for Passenger Ship Administration Article 65
The steerage cabins on the upper and lower decks of a passenger ship navigating international or outer sea routes shall be installed with ventilation windows in each tier of passenger deck individually. The cross-section of the ventilation window, and the inlet and outlet thereof shall be computed based on the certified number of passengers, 16 c㎡ allotted for every passenger; the cross-section of the ventilator of the steerage cabins located at both sides of the engine room shall be computed on the basis of 21 c㎡ for every passenger.If the ventilator mentioned above is bent, the cross-section thereof shall be increased by an additional quantum of 5% to 10% for every bend according to the bending curvature. If it is a deflected ventilator, the cross-section shall be added with a 6% to 36% additional quantum to each deflection according to the deflecting curvature.Notwithstanding the requirements set forth in the two previous paragraphs, the cross-section of the ventilator may be properly reduced by the shipping administration authority or ship register institute, provided that:(1) The steerage cabin can be ventilated through the deck head openings of the superstructure; or(2) The deck house, or there is a mechanical ventilation device; or(3) There is redundant space in it; or(4) The air can flow between it and other cabins.
中文原文 客船管理規則第65條
國際客船或航行外海航線之客船，其上、下甲板之統艙，應在每一層乘客甲板個別設置通風筒，其斷面積、入口及出口，均應按乘客定額以每人十六平方公分為準計算之。
但位於機艙兩側之統艙，其通風筒之斷面積，應以每一乘客二十一平方公分計算之。
前項規定之通風筒，彎曲者，其斷面積應依彎曲度就各彎曲增加百分之五至十；屈折者，其斷面積應依屈折度就各屈折增加百分之六至三十六。
前二項規定，符合下列情形之一，得經航政機關或驗船機構酌准減少通風筒之斷面積：
一、統艙能自設在船艛內或甲板室內之上甲板口通風者。
二、設有機械通風者。
三、統艙內之容積有剩餘者。
四、統艙與其他艙室間空氣流通者。
但位於機艙兩側之統艙，其通風筒之斷面積，應以每一乘客二十一平方公分計算之。
前項規定之通風筒，彎曲者，其斷面積應依彎曲度就各彎曲增加百分之五至十；屈折者，其斷面積應依屈折度就各屈折增加百分之六至三十六。
前二項規定，符合下列情形之一，得經航政機關或驗船機構酌准減少通風筒之斷面積：
一、統艙能自設在船艛內或甲板室內之上甲板口通風者。
二、設有機械通風者。
三、統艙內之容積有剩餘者。
四、統艙與其他艙室間空氣流通者。