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Nuclear Modernization

Navy Successfully Fires Off 191st Unarmed Trident II SLBM

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Navy Successfully Fires Off 191st Unarmed Trident II SLBM
PACIFIC OCEAN (Sept. 28, 2023) - An unarmed Trident II D5LE missile launches from the Ohio-class ballistic missile submarine USS Louisiana (SSBN 743), marking a successful Demonstration and Shakedown Operation-32 (DASO-32) off the coast of San Diego, California, Wednesday. The primary objective of a DASO is to evaluate and demonstrate the readiness of the SSBN's Strategic Weapon System (SWS) and crew before operational deployment following the submarine's engineered refueling overhaul. DASO-32 is the last DASO conducted by an Ohio-class SSBN coming out of engineering refueling overhaul (ERO), marking the completion of all post-ERO DASOs for the Ohio-class SSBNs. The Trident II D5LE strategic weapon system is the system that will provide the initial SWS capability for the Columbia-class SSBN. (U.S. Navy Photo by Mass Communication Specialist 3rd Class Kevin Tang)

The Navy has successfully launched the 191st Trident II D5 submarine-launched ballistic missile during a shakedown cruise of the USS Louisiana, marking the boat’s readiness for deployment.  Northrop Grumman [NOC], which builds the solid rocket motors that power the Trident, announced the successful launch on Oct. 2. The test was one element of the Navy’s Demonstration and Shakedown Operation 32 for the Louisiana, the planned last Ohio-class ballistic missile submarine. An unarmed version of the missile was launched from the…

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