第二次世界大战期间以及大战之后的数年里,海上油运输的大部分是由标准船完成的,即美国研制的“T-2油轮”。其运载量为16,000吨(夏李载重线)、船速为14.5节。到1954年,世界商业船队已拥有3,450艘油船,总载重量约37,000,000吨。T-2油轮依然超过平均尺寸,当时最大的油轮只有30,000载重吨。截止1970年底,注册的7,024艘油轮的总载重量已达281,596,987吨,有一百多艘油轮的载重 During the years of World War II and years after the war, most of the maritime oil transport was completed by standard ships, the T-2 developed by the United States. Its capacity is 16,000 tons (Xia Lee load line), the speed of 14.5 knots. By 1954, the world commercial fleet already had 3,450 oil tankers with a total payload of about 37,000,000 tons. T-2 still exceeded the average size of tankers, when the largest tankers only 30,000 dwt. As of the end of 1970, the total carrying capacity of 7,024 tankers registered reached 281,596,987 tonnes and the carrying capacity of more than 100 tankers