HII (NYSE: HII) announced plans to produce four additional ROMULUS 151 unmanned surface vessels through Breaux Brothers Enterprises in Louisiana, adding to one vessel currently under construction.

The military shipbuilder said the move represents acceleration toward initial production of autonomous surface capability for the U.S. Navy and allied partners. Andy Green, executive vice president of HII and president of the company's Mission Technologies division, said the vessels combine shipbuilding experience with scalable manufacturing and proven autonomy systems.

The ROMULUS platform is designed as a modular family of AI-enabled unmanned surface vessels intended to support missions including intelligence, surveillance and reconnaissance, mine countermeasures, strike operations, and launch and recovery of unmanned underwater and aerial vehicles for the U.S. Navy, U.S. Marine Corps, joint forces, and allied partners.

HII said the vessels are engineered for serial production and designed to scale across multiple vessel sizes while maintaining common manufacturing approaches and autonomy systems. The company aims to transition from prototype builds to high-rate, digitally enabled manufacturing.

The program incorporates HII's expanding unmanned vessel production ecosystem, including assembly facilities at Breaux Brothers Enterprises and the High-Yield Production Robotics initiative. The company said it plans to apply industrial robotics and digital quality systems to reduce unit costs and improve schedule predictability.

HII describes itself as America's largest military shipbuilder and says it is the largest producer of unmanned underwater vehicles for the U.S. Navy. The Virginia-based company employs 44,000 people and has operated for more than 140 years.

The information was provided in a company press release.