Northrop Grumman Awarded Contract Modification for SEWIP Block 3 Maritime Electronic Attack System

BALTIMORE. - March 30, 2026 - The U.S. Navy awarded Northrop Grumman (NYSE: NOC) a contract modification to produce up to nine additional Surface Electronic Warfare Improvement Program (SEWIP) Block 3 systems, including the first shipset to be installed on an aircraft carrier.

• SEWIP Block 3 is a U.S. Navy program of record that uses advanced electronic attack to protect surface ships from missiles, improving ship survivability.
• Including this award, Northrop Grumman is on contract to deliver up to 24 SEWIP Block 3 systems to the U.S. Navy.
• Northrop Grumman is leveraging SEWIP Block 3 technology to develop Scaled Onboard Electronic Attack (SOEA), which brings electronic attack capabilities to ships that cannot support SEWIP Block 3.
• Northrop Grumman's SEWIP Family of Systems protects sailors and ships by allowing them to avoid, mitigate or neutralize threats before they strike.

Experts:
Lara Kopf, vice president, Land and Maritime Systems, Northrop Grumman: "Our commitment to innovation means we're not just delivering systems; we're redefining naval capabilities. The SEWIP Block 3 technology transforms the future of electronic warfare by enhancing the adaptability and resilience of our fleet in a rapidly evolving threat landscape."

The first SEWIP Block 3 system was installed on the U.S.S. Pinckney (DDG-91), a guided missile destroyer, in 2023. (Photo Credit: Northrop Grumman)

Scaled Onboard Electronic Attack
Leveraging a decade of experience on SEWIP Block 3, Northrop Grumman has demonstrated technology advancements in support of Scaled Onboard Electronic Attack (SOEA), which brings similar capabilities to ships that cannot support SEWIP Block 3. Designed with low size, weight and power in mind, SOEA offers options for enhanced survivability by using effective electronic attack features to quickly jam and disrupt incoming missile threats.

Northrop Grumman is currently under contract with the U.S. Navy and in the rapid prototyping phase for SOEA.

Northrop Grumman is a leading global aerospace and defense technology company. Our pioneering solutions equip our customers with the capabilities they need to connect and protect the world and push the boundaries of human exploration across the universe. Driven by a shared purpose to solve our customers' toughest problems, our employees define possible every day.