HII Unmanned Systems Timeline

Events

• 2026-08-11 - Demonstration - DIU recognizes successful completion of HII and MetalCraft ROMULUS-25 prototype programme - MetalCraft Marine supplied the 25-foot Watcher hull while HII integrated its Odyssey autonomous-control software, creating the ROMULUS-25 configuration evaluated through the programme. The two prototypes were delivered in December 2025 and subsequently… - source: globenewswire.com
• 2026-07-06 - Contract Award - U.S. Navy exercises option-year production contract for HII Lionfish SUUV - HII received an option-year production contract for the U.S. Navy Lionfish small unmanned undersea vehicle, a REMUS 300-based system for undersea missions. The Lionfish program can scale to up to 200 vehicles under a five-year structure. HII had completed… - source: finance.yahoo.com
• 2026-07-06 - Production Milestone - HII adds Halimar Shipyard to ROMULUS USV production network - Halimar will construct complete ROMULUS 151 unmanned surface vessels. The partnership expands HII's Gulf Coast manufacturing footprint. Five ROMULUS 151 vessels were already under construction at Breaux Brothers. - source: hii.com
• 2026-05-15 - Production Milestone - HII and MetalCraft Marine deliver ROMULUS-25 autonomous USV prototypes - HII said the two ROMULUS-25 autonomous USVs were delivered in December 2025 and supported sea testing. The vessels were awarded under a Defense Innovation Unit contract for smaller form-factor autonomous boat prototypes for the U.S. Marine Corps. HII said… - source: hii.com
• 2026-04-24 - Contract Award - UK Ministry of Defence awards HII follow-on REMUS fleet support contract - The award covers support and sustainment for the Royal Navy REMUS 100 and REMUS 300 fleet. The official procurement notice was published on 24 April 2026. - source: sell2wales.gov.wales
• 2026-04-23 - Contract Award - Royal Navy awards £3 million contract for REMUS UUV support and sustainment - The Royal Navy awarded a contract worth approximately £3 million for support and sustainment of REMUS unmanned underwater vehicles. The scope covers maintenance, training, and operational support for existing REMUS systems. The contract reinforces ongoing… - source: bidstats.uk
• 2025-05-15 - Market Signal - REMUS UUV family reaches adoption across more than 30 navies worldwide - HII said the REMUS unmanned underwater vehicle family is used by more than 30 navies globally. The systems have been deployed across mine countermeasures, survey, and inspection missions. The milestone reflects long-term operational adoption of REMUS… - source: hii.com
• 2023-10-11 - Contract Award - US Navy awards initial nine-vehicle Lionfish contract - 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
• 2023-07-13 - Contract Award - U.S. Navy awards Lionfish program contract for large UUV development based on REMUS 300 - HII was selected by the U.S. Navy for the Lionfish program to develop and produce large unmanned undersea vehicles. The program is based on the REMUS 300 platform and supports mine countermeasures missions. The contract includes production and sustainment… - source: hii.com
• 2022-11-01 - Contract Award - HII awarded U.S. Navy contract for REMUS 300 unmanned undersea vehicles - HII was awarded a contract to provide REMUS 300 unmanned underwater vehicles to the U.S. Navy. The vehicles support mine countermeasures and expeditionary missions. The contract builds on prior REMUS deployments across U.S. naval operations. - source: hii.com
• 2022-06-21 - Deployment - REMUS 100 UUVs deployed in NATO Baltic Sea mine countermeasures exercise - REMUS 100 unmanned underwater vehicles were deployed during a NATO mine countermeasures exercise in the Baltic Sea. The systems supported seabed mapping and mine detection operations. The deployment demonstrated interoperability across allied naval forces. - source: hii.com
• 2021-09-21 - Product Launch - HII introduces REMUS 620 unmanned undersea vehicle for deepwater missions - HII introduced the REMUS 620 unmanned underwater vehicle for deepwater operations. The system is designed for depths up to 6,000 meters. REMUS 620 targets missions including deep-ocean survey, research, and subsea inspection. - source: hii.com