REMUS 300

REMUS 300 is HII’s modular, two-person-portable autonomous underwater vehicle for mine countermeasures, search, environmental assessment and configurable undersea payload missions to 305 metres.

Facts

  • Company: HII Unmanned Systems
  • Type: Autonomous Underwater Vehicle
  • Positioning: REMUS 300
  • Function: Modular undersea missions
  • Audience: Naval and marine operators
  • Status: Commercial
  • Website: https://hii.com/what-we-do/capabilities/unmanned-systems/remus-uuvs/remus-300/

About

About REMUS 300

REMUS 300 is a small-class autonomous underwater vehicle built on HII's REMUS technology platform. Its modular energy and payload sections support field reconfiguration, wet or dry payload integration and battery exchange through blind-mated end caps. The vehicle is rated to 305 metres, reaches 5 knots and supports mission durations up to 30 hours depending on its energy configuration.

Operators program missions for autonomous execution using HII's Odyssey management suite, with navigation supported by inertial, GPS, long-baseline and Doppler-velocity inputs. Applications include mine countermeasures, search and recovery, environmental assessment, archaeology and offshore survey. The US Navy's Lionfish system is based on REMUS 300; a 2023 contract covered an initial nine vehicles with options that could expand the programme to 200.

Specifications

  • Max Operating Depth: 305 m
  • Top Speed: 5 kn
  • Endurance: Up to 30 hours depending on energy configuration
  • Data Storage: Removable hard drive
  • Navigation: INS, GPS, LBL and DVL-aided dead reckoning
  • Portability: Two-person portable

Family specifications

  • 1.5_kwh - Range: 55 - Length: 2.03 - Weight: 48.5 - Battery: 1.5 kWh - Diameter: 19 - Endurance: 10 - Range Unit: km - Source Url: https://hii.com/wp-content/uploads/2026/02/REMUS-300-data-sheet.pdf - Length Unit: m …
  • 3.0_kwh - Range: 110 - Length: 2.39 - Weight: 58.5 - Battery: 3.0 kWh - Diameter: 19 - Endurance: 20 - Range Unit: km - Source Url: https://hii.com/wp-content/uploads/2026/02/REMUS-300-data-sheet.pdf - Length Unit: m …
  • 4.5_kwh - Range: 165 - Length: 2.64 - Weight: 70.3 - Battery: 4.5 kWh - Diameter: 20.7 - Endurance: 30 - Range Unit: km - Source Url: https://hii.com/wp-content/uploads/2026/02/REMUS-300-data-sheet.pdf - Length Unit: m…
  • depth_rating - Unit: m - Value: 305 - Source Url: https://hii.com/what-we-do/capabilities/unmanned-systems/remus-uuvs/remus-300/
  • maximum_speed - Unit: kn - Value: 5 - Source Url: https://hii.com/what-we-do/capabilities/unmanned-systems/remus-uuvs/remus-300/
  • portable_crew - Unit: people - Value: 2 - Source Url: https://hii.com/what-we-do/capabilities/unmanned-systems/remus-uuvs/remus-300/
  • maximum_endurance - Unit: h - Value: 30 - Source Url: https://hii.com/what-we-do/capabilities/unmanned-systems/remus-uuvs/remus-300/

Market context

Naval and marine operators

  • Peer Group: Commercial Survey AUV, Autonomous underwater vehicle, Marine Autonomy System
  • Workflow: Underwater Robotics
  • A18-M - Exail - Auv

View market context

Timeline

  • US Navy awards initial nine-vehicle Lionfish contract - 2023-10-11 - Contract Award - The initial build covers nine small unmanned underwater vehicles. Lionfish uses the two-person-portable REMUS 300 platform. Options could expand the programme to 200 vehicles over five years. - source: hii.com

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Deployments

  • Commercial Rollout - REMUS 300 UUV contract - 2022-11-01 - U.S. Navy - United States - HII received a U.S. Navy contract to provide REMUS 300 unmanned underwater vehicles for mine countermeasures and expeditionary missions. - source: hii.com

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