AP – The United States (US) Navy is transforming a costly flub into a potent weapon with the first shipborne hypersonic weapon, which is being retrofitted aboard the first of its three stealthy destroyers.
The USS Zumwalt is at a Mississippi shipyard where workers have installed missile tubes that replace twin turrets from a gun system that was never activated because it was too expensive.
Once the system is complete, the Zumwalt will provide a platform for conducting fast, precision strikes from greater distances, adding to the usefulness of the warship.
“It was a costly blunder but the Navy could take victory from the jaws of defeat here, and get some utility out of them by making them into a hypersonic platform,” said defence analyst Bryan Clark at the Hudson Institute. The US has had several types of hypersonic weapons in development for the past two decades, but recent tests have added pressure to the US military to hasten their production.
Hypersonic weapons travel beyond Mach 5, five times the speed of sound, with added manoeuvrability making them harder to shoot down.
One of the US programmes in development and planned for the Zumwalt is “Conventional Prompt Strike”. It would launch like a ballistic missile and then release a hypersonic glide vehicle that would travel at speeds seven to eight times faster than the speed of sound before hitting the target.
The weapon system is being developed jointly by the Navy and Army. Each of the Zumwalt-class destroyers would be equipped with four missile tubes, each with three of the missiles for a total of 12 hypersonic weapons per ship.
In choosing the Zumwalt, the Navy is attempting to add to the usefulness of a USD7.5-billion warship that is considered by critics to be an expensive mistake despite serving as a test platform for multiple innovations.
The Zumwalt was envisioned as providing land-attack capability with an Advanced Gun System with rocket-assisted projectiles to open the way for Marines to charge ashore. But the system featuring 155 milimetres guns hidden in stealthy turrets was cancelled because each of the rocket-assisted projectiles cost between USD800,000 and USD1 million.
Despite the stain on its reputation, the three Zumwalt-class destroyers remain the Navy’s most advanced surface warship in terms of new technologies.
Those innovations include electric propulsion, an angular shape to minimise radar signature, an unconventional wave-piercing hull, automated fire and damage control and a composite deckhouse that hides radar and other sensors.
The Zumwalt arrived at the Huntington Ingalls Industries shipyard in Pascagoula, Mississippi, in August 2023 and was removed from the water for the complex work of integrating the new weapon system. It is due to be undocked this week in preparation for the next round of tests and its return to the fleet, shipyard spokeswoman Kimberly Aguillard said.
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