The certified number of passengers of a passenger ship navigating in the outer sea route, on which the voyage takes 48 hours or more, shall be approved pursuant to Attachment 4;in addition, a promenade of at least 0.18 ㎡ for each passenger shall be provided. The shipping administration authority or ship register institute may reduce the certified number if the area of promenade decks is less than the said area, unless there are any specialcircumstances.Attachment 5.pdf