DEPLOY

Buying guide

REMUS (100 / 300 / 620)

By Huntington Ingalls Industries · underwater

Price
—
Availability
Internal use only (not for retail).
Maturity
production
Real-world use
Yes, 1 verified deployment

HII's REMUS family (REMUS 100/300/600/620) is the legacy-prime of the defense-subsea cohort: autonomous undersea vehicles for mine countermeasures, hydrographic survey, ISR, and electronic warfare, built by HII's Mission Technologies division, with a lineage dating to 2001 (Hydroid and Woods Hole Oceanographic Institution heritage; HII acquired Hydroid in 2020 for about $350 million). The REMUS 620 (introduced 2022) is a newer medium-class long-endurance UUV with up to 110 hours of endurance and 275 nautical miles of range, and a torpedo-tube-launched 'Yellow Moray' variant was fielded from the submarine USS Delaware in 2025. Cap-flag: large procurement-ceiling figures (such as a 200-vehicle order) are orders, not delivered counts. It is defense procurement; there is no consumer price.

Readiness

REMUS (100 / 300 / 620) is internal use only (not for retail), no capability claims are on file, 1 verified deployment is on file, and no incidents are on record.

Availability
internal-only

Internal use only (not for retail).

see evidence →

Price honesty
no-price

No price points on file for REMUS (100 / 300 / 620).

see evidence →

Capability honesty
no-claims

No reviewed capability claims on file for REMUS (100 / 300 / 620).

see evidence →

Real-world use
production

Maturity: production. 1 verified deployment in the registry.

see evidence →

Safety record
no-incidents

No incidents on record. 1 verified deployment on file.

What it claims to do

No reviewed capability claims on file.

Price

No reviewed price points on file.

Real-world use

Safety record

No incidents on record. 1 verified deployment on file.

Privacy

No privacy practices disclosed or on file for REMUS (100 / 300 / 620).

Specs

notes
  • Verified (legacy-prime contrast): Huntington Ingalls Industries (NYSE: HII; America's largest military shipbuilder, ~42,000+ employees) makes the REMUS UUV family via its Mission Technologies division. Acquired via Hydroid Inc. ($350M, closed Mar 26 2020, bought from Norway's Kongsberg). The legacy-prime contrast to the new-defense maritime startups (Saronic/Anduril). maturity=production / mature-fielded (highest of the maritime set).
  • Verified contracts/fielding (strongest signals): Up to ~200 REMUS-class UUVs order (ceiling); REMUS 620 NOAA order (2 units, delivered 2024); REMUS 620 international order (unnamed Indo-Pacific, Mar 2024). OPERATIONAL FIELDING (strongest): Jun 2025 'Yellow Moray' - first forward-deployed torpedo-tube launch-and-recovery of a REMUS 600 from USS Delaware (SSN-791), 3 fully autonomous launch/recovery sorties (Navy + WHOI). New DIU contract for the submarine Torpedo Tube Launch and Recovery (TTLR) system.
  • AI-substance: production-grade / proven: REMUS autonomy is decades-mature and operationally demonstrated (lowest claimed-vs-verified risk in the maritime set). Less 'AI-first' marketing, more demonstrated autonomous launch/recovery from a deployed submarine.
  • Claimed but NOT verified: TTLR/DIU contract value (undisclosed); exact total REMUS 620 fleet delivered; the full quantity actually delivered under the 'up-to-200' ceiling (ceiling != delivered); REMUS 620 depth/dimensions (not in primary source).
specs
REMUS family (REMUS 100/300/600/620): autonomous undersea vehicles for MCM, hydrographic survey, ISR, EW. REMUS 620 (introduced 2022): newer medium-class long-endurance UUV, up to 110 hr endurance, 275 nm range. Built by HII's Mission Technologies division (Unmanned Systems group). REMUS lineage dates to 2001 (Hydroid/WHOI heritage).
formFactor
maritime (autonomous SUBSEA vehicle / UUV family; defense + commercial; legacy prime)

What's under the hood

No brain on file for REMUS (100 / 300 / 620).

Frequently asked questions

Is the REMUS (100 / 300 / 620) actually available for purchase?
Not available to consumers. In internal use by Huntington Ingalls Industries.Source: HII $350M Hydroid (REMUS) acquisition from Kongsberg (closed Mar 26 2020)
What does the REMUS (100 / 300 / 620) cost?
Not announced.
Where is the REMUS (100 / 300 / 620) being used?
REMUS (100 / 300 / 620) is in use at: United States (1997-01-01).Source: HII REMUS AUV product family page (Mine Warfare + Oceanographic)
Is the REMUS (100 / 300 / 620) safe?
No incidents on record across 1 verified deployment.
How does the REMUS (100 / 300 / 620) handle privacy?
No privacy practices disclosed or on file for REMUS (100 / 300 / 620).
Who makes the REMUS (100 / 300 / 620)?
REMUS (100 / 300 / 620) is made by Huntington Ingalls Industries, based in Pascagoula, MS, USA.Source: HII $350M Hydroid (REMUS) acquisition from Kongsberg (closed Mar 26 2020)

Video

PRIMARY SOURCE
Courtesy of HII

HII footage of its REMUS autonomous undersea vehicle and its Sea Launcher launch-and-recovery system. REMUS conducts autonomous undersea navigation and mission management; a US defense system (range and endurance figures are HII's claims).

Manufacturer

Huntington Ingalls Industries (registry record: /companies/hii)

Compare side by side

Sources

  1. HII $350M Hydroid (REMUS) acquisition from Kongsberg (closed Mar 26 2020) · https://news.usni.org/2020/02/04/hii-ceo-350m-deal-for-uuv-maker-hydroid-keeps-shipbuilder-in-line-with-navy-demand
  2. HII Yellow Moray: first sub torpedo-tube launch/recovery of REMUS 600 from USS Delaware (2025) + TTLR deal · https://www.navalnews.com/naval-news/2026/04/hii-builds-on-submarine-mum-t-success-with-new-pentagon-deal/
  3. HII REMUS 620 (110 hr endurance, 275 nm range); NOAA order · https://www.hii.com/news/hii-remus-620-unmanned-underwater-vehicle-noaa-2023
  4. HII contract for up to ~200 REMUS-class UUVs · https://maritime-executive.com/article/huntington-ingalls-wins-contract-for-up-to-200-unmanned-sub-drones
  5. HII official YouTube (@HIIYouTube), embedded under standard YouTube embed terms. oEmbed author_url verified 2026-06-04. · https://www.youtube.com/watch?v=NiK9yLBmS9M · 2026-06-04
  6. HII REMUS AUV product family page (Mine Warfare + Oceanographic) · https://hii.com/what-we-do/divisions/mission-technologies/products/remus/
  7. US Navy Mine Warfare and Countermine Systems — REMUS operational use · https://www.navsea.navy.mil/Home/Warfare-Centers/NSWC-Panama-City/Contacts/Mine-Counter-Measure/

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