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System · Undersea

REMUS UUV family

HII family of small to large UUVs (REMUS 130, 300, 620, 6000) used for mine countermeasures, ISR and survey.

by HII

FieldedUnderseaMilestoneApr 7, 2025
A REMUS 100 autonomous underwater vehicle on public display in Turku, Finland

Photo: Photo by MKFI via Wikimedia Commons · Public domain (PD-self)

Milestones20222025
  1. Contract awardREMUS 300 selected as Navy's next-generation small UUV program of record, confirmed
  2. MilestoneFirst Lionfish (REMUS 300) vehicles delivered to U.S. Navy, confirmed

HII family of small to large UUVs (REMUS 130, 300, 620, 6000) used for mine countermeasures, ISR and survey.

Timeline2

  1. Contract awardConfirmed

    REMUS 300 selected as Navy's next-generation small UUV program of record

  2. MilestoneConfirmed

    First Lionfish (REMUS 300) vehicles delivered to U.S. Navy

    HII delivered the first two Lionfish small uncrewed undersea vehicles, based on REMUS 300, under a program that could reach 200 vehicles.

The latest 10 milestones. Solid entries are confirmed, outlined reported, dashed estimated or still to come; dotted italic entries are speculative. Dates show only the precision the sources give.

Operators1

  • USUnited States

Cost to the Government

  • Contract unit priceEstimated
    £940K
    Estimate / observation: 2024-01-22 · 5 units · United Kingdom

    UK MoD single-source notice (corrected 22 Jan 2024): contract value £4.7M to HII for five REMUS 300M (300m-capable) small AUVs for the Royal Navy; £4.7M / 5 = £940,000 per vehicle (may include ancillary equipment). Original notice had £7.8M for six.

    Source
  • Contract unit priceEstimated
    $2.2M
    Estimate / observation: 2023-09 · Then-year $ · 9 units

    US Navy Lionfish small UUV (REMUS 300 class) initial award announced late Sept 2023: $20M for nine SUUVs; $20M / 9 = $2.22M per vehicle (initial lot, likely includes support). Full contract up to 200 SUUVs and ~$347M (about $1.7M each if fully exercised).

    Source

Unit costs and contract unit prices for this system, and budget figures for the programs that buy it. Each figure states its dollar basis and links its source; contract values are under Programs & awards.

Capabilities1

Supply Chain Inputs1

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