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据美国海军协会等网站消息,2017年1月4日,美国俄亥俄级战略弹道导弹核潜艇的替代项目(ORP)哥伦比亚级核潜艇通过里程碑B审查,进入工程与生产研制阶段,即将开始具体设计和工程工作。1月4日,美国国防部采购负责人弗兰克·肯德尔签署采办决策备忘录(ADM),批准哥伦比亚级核潜艇通过里程碑B,并将其确定为重点国防采办项目。海军之前给出的成本预估为首艇成本为104亿美元,
According to the website of the U.S. Navy and other websites, on January 4, 2017, the ORP Columbia Nuclear Submarine of the U.S.-Ohio Strategic Nuclear Missile Submarine passed the milestone B review to enter the engineering and manufacturing stage of development and is about to begin specific design and engineering work . On January 4, Frank Kendall, head of procurement for the U.S. Department of Defense, signed the ADM decision to approve the Columbia-level nuclear submarine to pass Milestone B and identified it as a key defense acquisition. The cost estimates given before the Navy were estimated at a cost of 10.4 billion U.S. dollars for the first boat,