An inert gas system was required on existing product carriers from 1 May 1983 and by 1 May 1985 for ships of 40-70,000 dwt and down to 20,000 dwt which are fitted with high capacity washing machines.

从 1983 年 5 月 1 日起，到 1985 年 5 月 1 日，现有的载重吨为 40-70,000 载重吨和低于 20,000 载重吨并配备大容量清洗机的船舶需要安装惰性气体系统。