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BAE Systems has been awarded a $36 million production contract from Lockheed Martin to deliver Multifunction Modular Mast (MMM) systems for integration onto U.S. Navy submarines.
The MMM system is a radio frequency receiving antenna that provides U.S. Navy submarines (navy.com) the ability to detect, identify, and direction-find adversary communications signals before rising to the surface. The antennas will mount on new Virginia-class submarines and feed into Lockheed Martin’s AN/BLQ-10 electronic warfare (EW) system.
“In dynamic and contested environments, stealth is key, and submarines rely on accurate communications signal information to make decisions quickly,” said Michael Rottman, program area director for Maritime Sensors and Systems at BAE Systems. “The Multifunction Modular Mast system equips U.S. Navy submarines with critical capabilities to locate and identify potential threats, enabling them to analyze and respond accordingly.”
As network-centric naval warfare evolves, advanced sensors, data links, communications, and EW systems are needed to outpace threats. The MMM system plays a critical role in electromagnetic spectrum dominance and strategic situational awareness. It provides operators with a reliable secondary source to detect nearby adversaries, in addition to radar and sonar.
The tactical communications receiving antenna resides in a composite radome. Its pressure-rated and corrosion-resistant design allows the unit to survive the harsh undersea environment and maximize signal-gathering performance while minimizing visibility of the mast and platform. The system also includes a payload module that enables the U.S. Navy to incorporate additional sensors for other mission applications.
For more than 65 years, BAE Systems has developed and manufactured a range of maritime and communications solutions, including antennas, acoustic transducers, and sensors. Designed to withstand the depths of the ocean, these systems enable communication and remote sensing across the U.S submarine fleet.
Work on the MMM system is performed at BAE Systems’ New Hampshire facilities in Hudson, Merrimack, and Nashua.
Ref. No. 143/2025
About BAE Systems
At BAE Systems (baesystems.com), we provide some of the world’s most advanced, technology-led defence, aerospace and security solutions. We employ a skilled workforce of more than 100,000 people in over 40 countries. Working with customers and local partners, we develop, engineer, manufacture, and support products and systems to deliver military capability, protect national security, and keep critical information and infrastructure secure.
BAE Systems has been in Korea for decades and currently serves our government and Korean industrial customers across air, land and sea domains with capabilities such as electronic warfare, avionics, airborne radios, GPS and naval guns.
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anthony.deangelis[.]baesystems.com 
