When we think about military defense, especially nuclear deterrence, we often picture massive submarines silently patrolling the world’s oceans, ready to defend the US at a moment’s notice.

One of the key players in this defense strategy is the Columbia-class submarine program, the Navy’s next generation of nuclear-powered ballistic missile submarines.

But the program is reportedly facing some serious challenges—delays and cost overruns that could have bigger consequences than most of us realize.

These delays aren’t just about getting a submarine ready in the water on time, as they could actually weaken our national security and seriously drain the defense budget at the same time. Here’s what’s going on and why it matters.

Concern #1: Impact on US National Security

The Columbia-class submarines are supposed to replace the aging Ohio-class submarines, which have been the backbone of the US Navy’s nuclear deterrent for decades.

These subs carry nuclear missiles, making them a critical part of the nation’s defense strategy—especially in a world we have today where rivals like Russia and China are ramping up their military capabilities.

Originally, the lead Columbia-class submarine was supposed to be delivered by October 2027, but that timeline has slipped due to difficult construction work and cost growth, among many others.

Now, according to the latest Government Accountability Office (GAO) report, we’re looking at a delay of up to 16 months, pushing the delivery back to February 2029.