Reactors for Columbia, Virginia Subs ‘In Progress’, Say Navy Nuclear Officials

USNI News | May 22, 2025

Reactors for Columbia, Virginia Subs ‘In Progress’, Say Navy Nuclear Officials

John Grady

May 22, 2025 5:04 PM

Artist’s rendering of the Columbia-class SSBN submarine. US Navy Image

The naval reactors program for the Columbia-class ballistic missile submarines and updated Virginia-class attack boat are “in progress,” the senior civilian overlooking these programs in the Department of Energy told the Senate Armed Services strategic forces subcommittee this week.

James McConnell, acting principal deputy administrator at National Nuclear Security Administration, wrote in prepared testimony, “Naval Reactors is advancing naval nuclear propulsion capabilities to keep the U.S. Navy on the cutting edge of warfighting capability, maintaining the assured second-strike capability of the sea-based leg of the nuclear triad, and building the next generation of naval nuclear propulsion infrastructure for continued operational success.”

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