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Nuclear Modernization

NNSA Completes W88 Alt 370 Warhead Last Production Unit, Pivots To SLCM-N

Sarah Salem Sarah Salem
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NNSA Completes W88 Alt 370 Warhead Last Production Unit, Pivots To SLCM-N
The Ohio-class ballistic missile submarine USS Louisiana (SSBN-743) transits Puget Sound following a 41-month engineered refueling overhaul at Puget Sound Naval Shipyard and Intermediate Maintenance Facility on Feb. 9, 2023. (Photo: U.S. Navy by Mass Communication Specialist 1st Class Brian G. Reynolds)

The Department of Energy’s National Nuclear Security Administration (NNSA) completed the last production unit of the W88 Alteration 370, a program to modernize the W88 nuclear warhead over several years, NNSA announced Tuesday. The W88 nuclear warhead entered the stockpile in late 1988 and is deployed in the Navy’s Ohio-class Trident II D5 Submarine-Launched Ballistic Missile system. The W88 Alt 370 includes numerous updates to address aging concerns and enhance nuclear security, NNSA said in the release. The Navy coordinated…

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