Leveraging the REMUS 300’s advanced capabilities, the REMUS 620 enhances mission effectiveness in mine countermeasures, hydrographic surveys, intelligence collection, surveillance, and electronic warfare.
More than 700 REMUS UUVs have been sold globally and are in operation in more than 30 countries, including 14 NATO members. Over 90% of the vehicles delivered in the past 23 years are still operational today, demonstrating the platform’s durability and the ability to integrate new technologies as they are developed.
FOSTERING FRONTLINE FEEDBACK
“Putting our newest design through its paces on the Navy’s UUV Confidence Course was a great opportunity for us to validate our design improvements to the vehicle,” said Adrian Gonsalves, REMUS 620 Product Manager. “The Confidence Course provided a great benchmark to continue improvements to this great design and gave us a chance to show UUV sailors how much improvement we built into this next-generation MUUV in terms of modularity and maintainability.”
Gonsalves and teammates from Mission Technologies’ Uncrewed Systems group in Pocasset, Massachusetts, also familiarized US Navy sailors and technicians with the vehicle, which has a battery life of up to 110 hours and range of 275 nautical miles, providing unmatched mission capabilities in the field. The REMUS 620 can be deployed from submarines, amphibious ships, surface combatants, small manned or unmanned boats, and helicopters.
“Being able to showcase this latest MUUV to active-duty personnel was a huge privilege for us,” Gonsalves added. “These are the sailors that train the fleet and operate the UUVs within the fleet, so their feedback, which was very positive, is critical to future product considerations.”
INTEGRATING UPGRADES
HII unveiled the REMUS 620 in November 2022 and delivered the first two vehicles to the National Oceanic and Atmospheric Administration (NOAA) less than two years later. The NOAA REMUS 620 vehicles are equipped with a synthetic aperture sonar module, additional energy module and auxiliary equipment, so they are ideal for NOAA’s advanced underwater mapping and habitat restoration missions.

Navy’s UUV Confidence Course. (Image credit: HII)
“The rapid delivery of the REMUS 620 underscores HII’s exceptional agility and efficiency in producing and deploying uncrewed systems that meet the needs of our customers,” Duane Fotheringham, President of Mission Technologies’ Uncrewed Systems business group, said upon delivery. “The swift production and delivery timeline to NOAA demonstrate our commitment to supporting our customers’ mission requirements with rapid development and deployment of new capabilities and technology.”
Built to support current and next-generation naval and special operations forces operations, REMUS 620 features a modular, open architecture design to facilitate seamless payload integration and HII’s Odyssey™ suite of advanced autonomy solutions for intelligent, robotic platforms.
“The market interest in the REMUS 620 has been tremendous,” Fotheringham pointed out. “The rapid delivery to NOAA, alongside our growing backlog of REMUS 300 orders, reinforces the market’s confidence in the continued capabilities and versatility of the REMUS series.”
Learn more about HII’s Uncrewed Systems at hii.com/what-wedo/capabilities/unmanned-systems
This spotlight appeared in ON&T Magazine’s 2025 March Edition, Naval Defense & Intelligence, to read more access the magazine here.