The US Navy Can't Reload After One Salvo

The Navy procured 70 Tomahawk cruise missiles in fiscal 2022. It operates 73 Arleigh Burke-class destroyers. Do the math.

That's less than one missile per ship — and it's not an accounting error. It's a procurement strategy that assumes the U.S. will never actually have to fight a high-intensity naval war in the Western Pacific. Or if it does, that one magazine's worth of ordnance will be enough.

Anyone who's spent time on a warship knows that's not how naval combat works.

The Stockpile Problem Nobody Wants to Talk About

Admiral Samuel Paparo, head of U.S. Indo-Pacific Command, told the Brookings Institution in November 2024 what Pentagon officials usually avoid saying out loud: U.S. weapons transfers to Ukraine and Israel are "eating into stocks" needed for a potential conflict with China. His exact words: "To say otherwise would be dishonest."

Paparo's frustration is understandable. The U.S. has sent Ukraine over $60 billion in military assistance since Russia's invasion — including three Patriot air defense batteries, more than 40 HIMARS launchers, and ATACMS long-range missiles. Israel has received a steady stream of precision-guided munitions and air defense interceptors. One of the U.S. military's few Terminal High Altitude Area Defense (THAAD) systems is now deployed to Israel with about 100 American troops operating it.

Every THAAD battery in the Middle East is one that can't deploy to the First Island Chain. Every ATACMS fired in Ukraine is one that won't be available for a Taiwan contingency.

Eight Days to Empty

A 2023 wargame conducted by the Center for Strategic and International Studies found that the U.S. would run out of critical munitions within eight days of a high-intensity conflict with China over Taiwan. Not eight weeks. Eight days.

The numbers behind that conclusion are sobering:

• Tomahawk cruise missiles: The Navy's inventory stands at roughly 4,000 missiles. That sounds substantial until you calculate actual combat loads. If 20% of vertical launch system (VLS) cells on U.S. surface combatants and 100% of VLS cells on submarines are loaded with Tomahawks, and if 80% of the surface fleet, 60% of attack submarines, and 33% of strategic submarines are deployable in a Taiwan scenario, the Navy can fire approximately 2,300 Tomahawks in a single salvo — without reloading. The remaining 1,700 missiles in inventory aren't enough to reload the entire deployed fleet even once.
• MK 48 torpedoes: The Navy procured 58 torpedoes in FY 2022. The 22 Virginia-class submarines in service have 88 torpedo tubes combined. That procurement doesn't even fill the tubes once, let alone provide reloads.
• Long Range Anti-Ship Missiles (LRASM): Total inventory likely doesn't exceed 120 missiles. For context, a single carrier strike group faces potential threats from dozens of Chinese surface combatants and submarines.
• Joint Air-to-Surface Standoff Missiles (JASSM): Total production to date is approximately 3,000 missiles — and that's before accounting for hundreds already expended in combat operations in Syria and other theaters.

Production Can't Keep Pace

The problem isn't just current stocks. It's production capacity.

Ukraine consumes roughly 110,000 155mm artillery shells per month. After doubling production, U.S. factories produce 28,000 shells monthly. Ukraine's consumption rate exceeds total U.S. production by a factor of 3.6. The shells Washington sends to Kyiv aren't being replaced at anything close to consumption rates.

Precision munitions face the same constraints. Israel used more Joint Direct Attack Munitions (JDAMs) and Small Diameter Bombs in six days of operations than the U.S. procured in all of FY 2022 — approximately 3,000 JDAMs and 2,000 SDBs for the entire year.

The Pentagon's 2024 budget request emphasized procuring "the maximum amount of munitions" for "defeating aggression in the Indo-Pacific." But maximum procurement within current industrial capacity is still nowhere near wartime consumption rates.

The Magazine Depth Crisis

Paparo's language is telling. He didn't talk about "readiness levels" or "procurement timelines" — he talked about "magazine depth," the naval term for how many rounds a ship can carry before it needs to return to port for rearming.

In a Taiwan contingency, there is no nearby port. U.S. surface combatants and submarines would operate thousands of miles from Guam, the closest major logistics hub. Combat logistics ships can transfer fuel and some supplies at sea, but complex rearming operations — especially for VLS cells — typically require port facilities.

That means once a destroyer or cruiser empties its magazines, it's effectively out of the fight for the time it takes to steam back to Guam, reload, and return to station. At 20 knots, that's days of transit each way.

Chinese naval planners understand this math as well as American ones do.

Three Wars, One Industrial Base

The U.S. defense industrial base was sized for peacetime production with surge capacity that exists mostly on PowerPoint slides. Ukraine has been a wake-up call: even with emergency funding and multiyear procurement authorities, ammunition production increases take years to materialize.

Key munitions stockpiles would require three to five years to replenish even if all transfers to Ukraine stopped tomorrow, according to a 2024 analysis. That timeline assumes no other conflicts consuming U.S. munitions — an assumption that's already been proven wrong by Israel's operations in Gaza and Lebanon.

The U.S. now faces potential high-intensity conflicts in three theaters simultaneously: Eastern Europe, the Middle East, and the Western Pacific. The defense industrial base was never designed to support that level of sustained combat operations.

Deterrence Runs on Credibility

Frederick the Great said that when you defend everything, you defend nothing. The corollary is equally true: when you can't sustain operations anywhere, you can't deter threats everywhere.

Chinese military planners pay attention to U.S. munitions expenditures. They read the same CSIS wargames. They know the U.S. sent Ukraine three Patriot batteries that could have deployed to the Western Pacific. They've watched THAAD systems — of which the U.S. has only seven batteries total — get diverted to the Middle East.

The gap between U.S. strategic commitments and munitions inventories undermines deterrence in the Indo-Pacific. You can't hold an adversary at risk if they've calculated you'll run dry before they do.

Paparo was "already dissatisfied" with munitions stocks before Ukraine and Gaza. He's "a little more dissatisfied" now. That's diplomatic language for a problem the U.S. hasn't solved and isn't on track to solve.

The math doesn't work. And until Congress and the Pentagon are willing to fund production capacity that matches strategic commitments rather than peacetime comfort levels, magazine depth will remain the U.S. Navy's critical vulnerability in any Western Pacific contingency.