China’s New Submarines Could Threaten the US From Close to Home

The Undersea Arms Race Is Heating Up

Senior U.S. naval officials are starting to sound the alarm over China’s rapidly advancing submarine fleet, and we think this is becoming far more serious than many people realise.

This is no longer just about China projecting power across the region. The bigger issue is that these submarines could pose a direct threat to the U.S. mainland, while still allowing China to operate closer to home in safer, more protected waters.

What makes this even more concerning is the reported use of YJ-19 hypersonic missiles on these submarines. It is like putting a Ferrari engine in a Toyota. You are taking an already dangerous platform and turning it into something far more lethal.

These are not just standard weapons. Hypersonic missiles move at extreme speeds and can manoeuvre throughout their flight path, which makes them much harder to track, predict, and intercept.

That is why this matters. We are not just looking at a bigger submarine fleet. We are looking at a more survivable, more advanced, and potentially far more dangerous strike capability that could shift the strategic balance in a very real way.

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Why China’s Next Ballistic Missile Sub Matters More Than Its Surface Fleet

China is transitioning away from its older diesel-powered submarines and moving toward modern nuclear-powered vessels equipped with longer-range ballistic missiles, and we think that shift matters a lot.

This is what makes China’s sea-based nuclear deterrent far more serious. These upgrades make it harder to detect, harder to destroy, and ultimately far more credible.

What makes this class of vessel especially significant is its expected strike range. These submarines could carry missiles capable of reaching much of the U.S. mainland while operating from protected waters much closer to China’s own shores.

That changes the equation. It gives China a stronger deterrent while reducing the need to push as far into contested waters.

And as most economies already know, China is a production powerhouse. That is exactly why U.S. officials are so concerned, not just about the technology, but about the pace of submarine production.

Output has reportedly moved from fewer than one nuclear submarine a year to a much faster build rate. Pentagon estimates now point to China’s submarine fleet growing from more than 60 vessels today to roughly 80 by 2035.