April 21, 2026
HII Accelerates ROMULUS USV Program: Four New ROMULUS Vessels Head into Production
NATIONAL HARBOR, Md., (April 21, 2026) — HII (NYSE: HII), America’s largest military shipbuilder and global leader in autonomous maritime systems, announced today plans for the production of four ROMULUS 151 vessels to be built by Breaux Brothers Enterprises in Louisiana in addition to the ROMULUS 151 currently under construction.
The announcement signals a rapid shift toward initial production, as HII pushes to accelerate delivery of autonomous surface capability to the U.S. Navy and allied partners.
“ROMULUS represents a shift in how we deliver unmanned capability to the fleet,” said Andy Green, executive vice president of HII and president of HII’s Mission Technologies division. “We are combining shipbuilding experience, scalable manufacturing, proven autonomy, and strong industry partnerships to move quickly from prototype to operational deployment. The progress we are seeing today — including these initial production vessels — reinforces that we are on a disciplined path to deliver meaningful capability at speed and at scale.”
Built for Scale and Mission Flexibility
ROMULUS is a modular family of AI-enabled USVs designed to meet current and emerging requirements for the U.S. Navy, U.S. Marine Corps, joint forces, and allied partners. The platform supports a wide range of missions, including intelligence, surveillance and reconnaissance (ISR), mine countermeasures, strike operations, counter-unmanned systems, and the launch and recovery of unmanned underwater and aerial vehicles.
Engineered for serial, repeatable production, ROMULUS vessels combine endurance, global reach, and modular adaptability. The family is designed to scale across multiple vessel sizes while maintaining a common manufacturing approach and autonomy baseline.
Advancing a Scalable Manufacturing Model
The ROMULUS program is supported by HII’s expanding unmanned vessel production ecosystem, including its assembly facility at Breaux Brothers Enterprises and the High-Yield Production Robotics (HYPR) initiative. Together, these efforts are designed to transition unmanned vessel production from prototype builds to high-rate, digitally enabled manufacturing.
In March, HII released a plan outlining an expanded ROMULUS assembly facility at Breaux Brothers and introduced HYPR as HII’s initiative to apply industrial robotics and digital quality systems to unmanned platform manufacturing. By integrating automation, advanced tooling, and standardized workflows, HII aims to reduce unit costs, improve schedule predictability, and enable program-level delivery of unmanned systems aligned with evolving fleet needs.
“ROMULUS is engineered from the outset for scale,” Green added. “By aligning design, autonomy, and manufacturing, we are creating a production model that delivers predictable outcomes and positions us to meet growing demand for autonomous maritime capability.”
About HII
HII is America's Seapower Company. The nation’s largest shipbuilder, HII builds the manned and unmanned maritime systems and all-domain mission technologies that project U.S. and allied power around the world. With a more than 140-year history of advancing U.S. national security, HII is headquartered in Virginia and employs 45,000 people across three divisions.
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