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HII awarded contract to construct REMUS 620 UUV for mysterious Pacific country.

| Naval News Navy 2024

According to information published by HHI on March 13, 2024, the firm has been awarded a contract to construct a REMUS 620 unmanned underwater vehicle (UUV) for an unnamed international client based in the Indo-Pacific region.
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Russian Vyborg Shipyard laid the Purga ice class coastguard ship of project 23550 925 001 Artist rendering of the REMUS 620 Unmanned Underwater Vehicle. (Picture source: HII)

The order, to be fulfilled by HII's Mission Technologies division in 2024, is aimed at enhancing capabilities for monitoring and data collection missions underwater.

The REMUS 620, introduced in 2022, is a medium-class UUV noted for its significant endurance and range capabilities. It can operate for up to 110 hours and cover distances of 275 nautical miles, making it suitable for a variety of operations including mine countermeasures, hydrographic surveys, intelligence, surveillance, and electronic warfare. In 2023, the REMUS 620 completed two major development milestones, including an in-water test in October and its first sea test in December.

This contract represents the second order for the REMUS 620 model. Previously, in August 2023, the U.S. National Oceanic and Atmospheric Administration (NOAA) had placed an order for two REMUS 620 UUVs for use in mapping the Gulf of Mexico with higher resolution, as part of efforts to restore seafloor habitats damaged by the 2010 Deepwater Horizon oil spill. NOAA has also employed other models from the REMUS line in various oceanographic tasks.


This UUV features a maximum battery life of up to 110 hours and a range that can extend up to 275 nautical miles (approximately 509 kilometers), although these figures can vary based on the modules it carries.

When equipped with synthetic-aperture sonar, its operational parameters adjust to a battery life of 78 hours and a range of 200 nautical miles (about 370 kilometers), with a maximum speed reaching 8 knots (15 kilometers per hour).

The REMUS 620 is engineered to support a diverse set of missions, including mine countermeasures, hydrographic surveys, intelligence collection, surveillance, and roles in cyber and electronic warfare.

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