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Columbia Class
Region
United States
Category
Marine
The USN’s new Columbia-class SSBN, also known as the SSBN 826-class, is planned to replace the existing Ohio-class boats as the cornerstone of the US sea-based nuclear deterrent. The programme was initially known as the Ohio Replacement programme and the SSBN(X). The Columbia- class SSBNs are the USN’s top acquisition priority, planned to cost $109.8 billion. The submarines are expected to enter service between 2031 and
2042.