The amendments also made it compulsory for passenger ships to have a lightweight survey at least every five years to ensure their stability has not been adversely affected by the accumulation of extra weight or any alterations to the superstructure.

修正案还强制要求客船至少每五年进行一次轻量化检验，以确保其稳定性不会因额外重量的积累或上层建筑的任何改造而受到不利影响。