[1] In 2021, construction began on District of Columbia at General Dynamics' Electric Boat facility in Quonset Point, Rhode Island.

[5] The 12 ballistic missile submarines of the Columbia class will perform deterrent patrols, the naval leg of the U.S. nuclear triad.

The cost to build District of Columbia, the lead boat of the class, will be an estimated $6.2 billion (fiscal 2010 dollars).

[6] The Navy has a goal of reducing the average cost of the remaining 11 planned hulls in the class to $4.9 billion each (fiscal 2010 dollars).

[13] In March 2016, the U.S. Navy announced that General Dynamics Electric Boat was chosen as the prime contractor and lead design yard.

[16] Huntington Ingalls Industries’ Newport News Shipbuilding will serve as the main subcontractor, participating in the design and construction and performing 22 to 23 percent of the required work.

[17] In late 2016, some 3,000 employees were involved, in Electric Boat alone, in the detailed design phase of the program,[18] with the procurement for the first submarine established in 2021.

[23][25] In December 2008, General Dynamics Electric Boat Corporation was selected to design the Common Missile Compartment that will be used on the Columbia class.