Huntingon Ingalls to supply two REMUS 620 UUV to US NOAA.

According to a PR published by HII on August 18, 2023, in a move to enhance their underwater exploration and mapping capabilities, the National Oceanic and Atmospheric Administration (NOAA) has contracted HII for the provision of two REMUS 620 unmanned underwater vehicles (UUVs). The manufacturing process, is set to culminate in 2024.
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Artist rendering of the REMUS 620 Unmanned Underwater Vehicle. (Picture source: HII)

Announced in November 2022, the REMUS 620 is an evolution of the REMUS 300, yet matches the size of the REMUS 600. This vehicle boasts a robust battery that can operate for up to 110 hours and cover distances up to 275 nautical miles (509 km) based on the modules equipped.

Interestingly, when fitted with a synthetic-aperture sonar, the battery longevity drops slightly to 78 hours, reducing the range to 200 nmi (370 km). Additionally, the REMUS 620 can attain sprint speeds of 8 knots (15 km/h).

Its design versatility means it can serve multiple roles: mine countermeasures, hydrographic surveys, intelligence collection, surveillance, cyber warfare, and electronic warfare. An added advantage is its ability to deploy smaller UUVs or UAVs.

Another highlight is its flexible deployment options. The REMUS 620 can be launched from an array of platforms, including submarines, surface ships, manned or unmanned crafts, and even helicopters. While it is retrievable underwater by submarines, advancements are being made at Woods Hole to enable recovery directly into torpedo tubes.

For NOAA's objectives, modifications will be made to the REMUS 620, such as additional energy modules, ensuring the UUV aligns with the agency's mission parameters.

A key task for these UUVs will be extensive seafloor mapping in the Gulf of Mexico, with particular emphasis on areas affected by the 2010 Deepwater Horizon oil spill.

It's worth noting that NOAA has previously harnessed other REMUS models for diverse marine undertakings, from habitat analysis to underwater archeology and expansive ocean mapping.