New photos of the future ballistic missile submarine USS District of Columbia (SSBN-826) surfaced online via Ashley Cowen’s (Lead Photographer at Newport News Shipbuilding) LinkedIn page.
These photos offer a new look at both the in progress bow and stern section, with the stern due to house the both the propulsion system and the X-shaped stern control planes. Both of these sections appear to be inside General Dynamics Electric Boat’s South Yard Assembly Building or another large construction hall at their primary submarine yard in Groton, Connecticut.
Naval News has previously reported on the arrival of the “Atlas” dry dock meant to service the Columbia-class SSBNs in January of 2026. The continual delivery of components, entire sections of the submarine, and supporting infrastructure suggests that the construction process continues to rapidly progress prior to the delivery of SSBN-826 herself sometime in early 2029.
The Columbia-class of SSBNs remains amongst the Navy’s top priority as the class continues to see investments, with the next 5 boats in the class (hulls 4-8) procured at a rate of one per year over the next 5 fiscal years, for a total cost of $62 billion dollars dedicated towards the missile boats.
About the Columbia-class Submarines
The Columbia-class ballistic missile submarines represent the U.S. Navy’s replacement for the aging Ohio-class ballistic missile boats, representing continuity in regards to America’s sea-based leg of the nuclear triad as the Ohios are continually phased out of service until the early 2040s, when all will be retired.
The Columbias feature several qualitative enhancements fostered in the 5 decades since the inception of the Ohio-class, including a quieting and propulsion technology leap (including electronic input for the control surfaces), new sonar arrays and other sensor upgrades, and additional space granted by the Columbia’s larger size. Despite the Columbia’s increased size, the amount of Trident missiles aboard drops from 24 on the Ohios to 16, with the jury still out on uses for the extra tonnage.
Fabrication of the Columbias utilizes modular construction methods, allowing for separate manufacturing of submarine modules by different companies, prior to final assembly at General Dynamics Electric Boat in Groton, Connecticut. Tallying all compartments, including 4 missile compartments each carrying 4 UGM-133 Trident II D5LE (Life Extention) submarine launched ballistic missiles (SLBMs), the Columbia will total out to just over 20,000 tons.
As currently planned, the Navy will see a total of 12 Columbia-class ballistic missile subs funded and constructed, with the USS District of Columbia herself entering service in 2029, and the last boat of the class inducted in 2041-2042. The Columbias will serve into the 2080s at least, likely matching or exceeding the total service life of their predecessors.
