The following is the Feb. 26, 2020 Congressional Research Service report, Navy Columbia (SSBN-826) Class Ballistic Missile Submarine Program: Background and Issues for Congress.
From the report
The Columbia (SSBN-826) class program is a program to design and build a class of 12 new ballistic missile submarines (SSBNs) to replace the Navy’s current force of 14 aging Ohio-class SSBNs. The Navy has identified the Columbia-class program as the Navy’s top priority program. The Navy wants to procure...
https://news.usni.org/2020/05/19/report-columbia-class-nuclear-ballistic-missile-submarine-program