The Golden Fleet is a political project with a naval problem

IN DECEMBER LAST YEAR, Donald Trump, the American president, stood at his Florida resort and announced a new class of battleships. They would be the fastest, the biggest, and, in his words, "100 times more powerful than any battleship ever built". The first, the USS Defiant, would carry hypersonic missiles, nuclear-tipped cruise missiles, railguns and high-powered lasers. It would be the centrepiece of a "Golden Fleet" designed to restore American maritime dominance.

Eight months later, the CBO and the Navy have produced their first cost estimates. They are large. And they reveal something less about naval strategy than about the mechanics of political procurement.

The Congressional Budget Office, Congress's nonpartisan scorekeeper, estimates that the lead Trump-class battleship - 30,000 to 40,000 tons of displacement - would cost between $15 billion and $22 billion, depending on weight, armament and whether the contract is awarded now or in 2030. Follow-on ships, under ideal labour conditions, would run $9 billion to $15 billion each. The Navy's own budget documents for fiscal 2027 put the lead ship at $17.5 billion, with $43.5 billion planned for the first three vessels across the five-year defence outlook. The service's updated 30-year shipbuilding plan, released in May, projects total new-construction spending of roughly $1.2 trillion - more than 30% above the previous administration's plan of around $900 billion.

That $1.2 trillion is not just the battleship. It covers every new hull in the Navy's programme, including submarines, destroyers, frigates and auxiliaries. But the battleship is the increment that pushes the total up. Without it, the plan would have been broadly continuous with what the Biden administration proposed.

To be sure, the Navy has long wanted a larger surface combatant. The Trump-class is nominally the successor to the DDG(X) guided-missile destroyer programme, which the service had been developing for years. Chief of Naval Operations Admiral Daryl Caudle told Congress that the battleship simply took the DDG(X) concept "put that on steroids". The Hudson Institute, which the Pentagon hired to recommend the fleet's future mix, did indeed find value in ships larger than destroyers, albeit in the 15,000- to 20,000-ton range - less than half the size the president has in mind.

The trouble is that size, cost and strategic logic do not travel together.

The Navy has been moving toward a model called Distributed Maritime Operations, which envisions fleet assets spread across a wide area, connected by sensors and data networks so that many smaller platforms can coordinate strikes. A 40,000-ton battleship goes in precisely the opposite direction. It concentrates an enormous amount of firepower, sensors and command capability into a single target. In a high-end conflict, losing one would be a blow that is both financial and strategic. The Ford-class aircraft carrier already cost $13 billion and came in 30% over budget. The battleship is expected to cost around $17.5 billion, significantly more than the Ford's $13 billion.

Then there is propulsion. In January, Admiral Caudle said the battleship would be conventionally powered, with gas turbines and diesel engines, so that it could reach the water sooner. In May, the Navy's shipbuilding plan quietly designated it "BBGN" - the "N" signifying nuclear. Admiral Caudle told a congressional subcommittee that the reversal was the "exact right answer" and praised nuclear endurance for Pacific operations. The decision adds cost and complexity. Nuclear surface warships have not been built in the United States since the 1990s, partly because they were expensive to maintain. The two shipyards that currently build nuclear vessels - Huntington Ingalls's Newport News Shipbuilding and General Dynamics's Electric Boat - are already at or near capacity. The US shipbuilding workforce has not grown since 1990, as the CBO's own analyst, Eric Labs, pointed out. A new nuclear surface class would compete with Ford-class carriers and Columbia-class submarines for the same scarce labour pool.

The weapons pose their own question. Railguns, ship-based hypersonic missiles and directed-energy platforms are still in development. The Navy spent hundreds of millions of dollars and more than 15 years trying to field a railgun before abandoning the effort in 2021. Nuclear cruise missiles raise treaty complications. Laser systems are more advanced but remain limited: one drone-blinding system now sits aboard eight destroyers after eight years of work. Stacking all of these unproven systems onto a single hull - the Ford carrier learned the cost of doing that - is a recipe for schedule slippage and price growth.

None of this is to say that a large surface combatant has no place in the future fleet. A capable command-and-control ship that can project firepower without constant refuelling has genuine utility, especially in the vast geography of the western Pacific. But a 40,000-ton nuclear platform carrying weapons that do not yet exist, built by a workforce that cannot scale, to replace a destroyer programme that had already been running for five years is not naval strategy. It is political architecture.

The incentives are easy to map. Mr Trump wanted a visible, enduring symbol of American power. The battleship - a term evoking the Iowa-class giants of the Second World War - was an obvious choice. It carries nostalgia, it photographs well, and it can be named after a living president, breaking convention for the purpose. The Navy, eager to please a commander-in-chief who texts the secretary of the navy at 1am about rusty hulls, delivered an acquisition programme. That the design has not been finalised, that the contractor has not been chosen, and that Mr Trump claimed the first ship would take two-and-a-half years to build (the Navy expects August 2036) does not yet seem to have changed anyone's mind.

The deeper problem is what happens after the current administration leaves office. A future president, or a Congress with different priorities, will face a programme that has consumed advance procurement funding, design contracts and political capital. Cancelling it wastes what has been spent. Continuing it locks the Navy into a platform whose cost and strategic fit are still unproven. This is the familiar trap of sunk-cost inertia: once a megaproject passes the point of easy reversal, it becomes hard to stop even if the reasons for starting it have changed.

Ronald O'Rourke, a naval analyst at the Congressional Research Service, has asked the right question. If the battleship programme is abandoned a few years from now, what happens to the DDG(X) destroyer it displaced? Five years of development effort would have been lost. The gap between the current Arleigh Burke-class destroyers and whatever comes next would widen.

The better path would be to build something closer to what the Hudson study actually recommended: a 15,000- to 20,000-ton surface combatant, conventionally powered, with a manageable weapons fit and a realistic timetable. That ship would still be larger and more capable than a destroyer. It would not be the most expensive warship in American history. It would not require a nuclear workforce that does not exist. And it would fit, rather than fight, the Navy's concept of distributed operations.

Political megaprojects are never going to be cheap. But when the price is measured in tens of billions per hull, in years of schedule, and in the opportunity cost of ships that could have been built instead, they cease to be questions of aesthetics. They are questions of arithmetic. And the arithmetic, for all the gold in the branding, does not add up.

A fleet is built with ships, not with slogans.