英国从1953年起开始研制建造核潜艇,在美国的帮助下,经过10年的努力,国内第一艘攻击型核潜艇“无畏”号服役。海军方面在总结“无畏”级的建造经验和参考第二代攻击型核潜艇“勇士”级设计的基础上,研制出第一代弹道导弹核潜艇“决心”级。“决心”级原按服役需要计划建造5艘,在首艇开始建造后的第二年,将最终建造数量改为4艘。 Britain started to develop nuclear submarines from 1953 onwards. With the help of the United States, after 10 years of hard work, the first attack nuclear-powered submarine in China became “intrepid”. On the basis of summing up the “fearless” construction experience and referring to the “warrior” design of the second generation of attack submarines, the navy developed the “determination” level of the first generation of ballistic missile submarines. The “Determined” class originally planned to construct five vessels according to the service needs. In the second year after the construction of the first vessel began, the final construction quantity will be changed to four.