
Columbia-class submarine
Future class of US Navy nuclear ballistic missile submarines

Future class of US Navy nuclear ballistic missile submarines
The upcoming Columbia class (formerly known as the Ohio Replacement Submarine and SSBN-X Future Follow-on Submarine) are nuclear-powered ballistic missile submarines of the United States Navy, designed to replace the Ohio class. Construction of the first vessel began on 1 October 2020, and is scheduled to enter service in 2031. On 3 June 2022, the Navy announced that the lead vessel of the class will be named USS District of Columbia (SSBN-826), because there is already an attack submarine named USS Columbia (SSN-771). Nevertheless, the Navy has since continued to refer to the class as Columbia.
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