US Navy starts construction of second Columbia-class ballistic missile submarine USS Wisconsin

On August 27, 2025, General Dynamics Electric Boat marked a significant milestone with the keel laying of the future USS Wisconsin (SSBN 827) at its Quonset Point facility in Rhode Island. This ceremony, aligning with the submarine’s hull number date of 8/27, was made official when Ship Sponsor Dr. Kelly Geurts welded her initials onto a steel plate, assisted by veteran welder Robert Ray Jr. The event not only signified the start of construction for the second Columbia-class ballistic missile submarine but also engaged Wisconsin residents through multiple watch parties across the state.

Significance of the Columbia-Class Submarine

The Columbia-class submarines are set to become the largest ever built by the United States, measuring 171 meters (560 feet) in length and displacing approximately 20,810 long tons. The USS Wisconsin will be equipped with 16 Trident II D5LE submarine-launched ballistic missiles and Mk 48 heavyweight torpedoes. Its nuclear propulsion system, based on the S1B reactor, is designed to last the entire 42-year service life without requiring mid-life refueling. This innovation allows the Wisconsin to undertake an expected 124 deterrent patrols, significantly reducing downtime compared to the older Ohio-class submarines.

During the keel laying ceremony, Admiral William Houston emphasized the submarine’s critical role in the United States’ strategic nuclear deterrent capabilities. He noted that the Wisconsin will carry more explosive power than all of World War II combined. The submarine’s design incorporates advanced features such as turbo-electric propulsion, which minimizes acoustic signatures and enhances mechanical efficiency. The integration of cutting-edge technology, including a Large Aperture Bow sonar system derived from Virginia-class submarines, further underscores the Columbia-class’s modern capabilities.

Industrial Impact and Future Prospects

The construction of the USS Wisconsin and the broader Columbia program involves a collaborative effort between General Dynamics Electric Boat and Huntington Ingalls Industries’ Newport News Shipbuilding. The modular construction process begins with pressure-hull cylinders at Quonset Point, which are outfitted with essential systems before being transported for final assembly. Electric Boat handles about 78% of the work, while Newport News contributes the remaining 22-23%. This partnership supports over 3,000 suppliers nationwide, including 300 companies based in Wisconsin, highlighting the program’s extensive industrial footprint.

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As the Navy’s top shipbuilding priority, the Columbia program aims to replace the aging Ohio-class submarines, with plans for twelve Columbia-class vessels to be completed by 2035. The program has faced delays due to supply chain issues and workforce challenges, pushing the lead boat’s delivery from October 2027 to a new window between October 2028 and February 2029. Despite these setbacks, the Navy is committed to meeting deployment timelines through proactive crew training and accelerated assignments.

The keel laying of the USS Wisconsin not only represents a significant advancement in naval capabilities but also serves as a reminder of the strong connection between Wisconsin’s industrial heritage and the nation’s defense strategy. As the construction progresses, the state continues to celebrate its role in supporting the Columbia-class program, reinforcing the importance of local contributions to global security.