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)

On September 27 Lockheed Martin, supporting the U.S. Navy, marked the successful launch of one Trident II D5 Life Extension Fleet Ballistic Missile (FBM). The Navy conducted Demonstration and Shakedown Operation-32 (DASO-32) launching an unarmed missile from the Pacific Ocean off the coast of California.

DASO-32 increased the Trident II D5 record to 191 successful test launches since design completion in 1989 – the most reliable test record for a large ballistic missile. Through the test, Navy submarine USS Louisiana (SSBN 743) demonstrated the readiness of the crew and strategic weapon system and certified the crew for strategic patrol. The DASO event provides an opportunity to collect data about the D5 Life Extension missile’s performance using a test missile kit, also produced by Lockheed Martin. This event represents the last planned DASO resulting from an engineer refueling overhaul from an OHIO-class submarine.

“We are proud of Lockheed Martin’s nearly seven decades of partnership with the U.S. Navy to develop advanced weapon capabilities to deter threats to our nation and allies,” said Jerry Mamrol, vice president of Fleet Ballistic Missiles at Lockheed Martin. “As the Navy turns towards the future of sea-based strategic deterrence, our new generation of engineers and technicians are poised to meet the challenges of this next era. Lockheed Martin is already preparing and modernizing the missile for its future launch platform, COLUMBIA-class submarines.”