HII’s Ingalls Shipbuilding division has completed builder’s sea trials for USS Zumwalt (DDG1000), following an extensive period of modernisation at the Pascagoula shipyard in Mississippi.
The sea trials evaluated the ship’s systems after the integration of the US Navy’s first Conventional Prompt Strike (CPS) weapon system.
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USS Zumwalt, the lead ship of the Zumwalt-class destroyer programme, entered the Pascagoula shipyard in August 2023 for modernisation. Soon after, it was taken out of the water and placed ashore, allowing the Ingalls workforce to carry out extensive technology improvements.
Key work included installing the CPS capability and removing the original pair of 155mm Advanced Gun Systems in favour of new missile-launch tubes.
In December 2024, USS Zumwalt was floated out and continued through additional steps to restore it to operational readiness.
Ingalls Shipbuilding president Brian Blanchette said: “We have achieved a pivotal milestone with our Navy and industry partners to advance this complex modernisation work that will set a precedent for the Zumwalt class. I’m very proud of the team effort and their critical role to advance the US Navy’s first warship with hypersonic capabilities.”
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By GlobalDataThe Zumwalt-class guided-missile destroyers were conceived under the DD-21 programme, which the US Department of Defense redesignated as DD(X) in November 2001.
These vesselsmeasure 610 feet (ft) in length with a beam of 80.7ft and displace 15,997 tonnes. Each vessel is designed for a sustained speed of 30 knots and can accommodate a crew of 197.
According to HII, the destroyers are fitted with an electric propulsion system, a wave-piercing tumblehome hull, and a design aimed at reducing detectability.
They are built to support deterrence, power projection, sea control, and command and control operations while accommodating future systems and missions.
Besides USS Zumwalt, Ingalls is currently integrating the CPS weapon system on USS Lyndon B. Johnson (DDG1002) and plans to install CPS on USS Michael Monsoor (DDG1001) at a later time.
