existing oil tanker meaning in English

现有油船

Considerable effort in the development of fatigue requirements and computer programs has been devoted to cope with assessment of fatigue of structures . the demand of disposal or scraping of old oil tankers has been highlighted since the accident of erika . it is necessary to develop a procedure for existing oil tankers to determine the technical situation , especially fatigue situation of tanker hulls
由于erika等事件的发生，各国关于拆除老龄油轮的呼声日益高涨，因此，对现有老龄油轮的技术现状特别是疲劳损伤程度进行评估，以决定船舶的技术等级，作为油轮是否拆除的依据之一，就显得相当有必要了。