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Defdex

Uncrewed vessel · Sea

ROMULUS-25

HII 27-foot autonomous high-speed interceptor USV that runs the Odyssey autonomy suite.

by HII

PrototypeUncrewed vesselSeaFirst deliveryDec 2025

27-foot autonomous interceptor surface vessel built by HII with MetalCraft Marine. It carries up to 1,000 pounds of payload with a range of up to 1,000 nautical miles. Prototypes were delivered for the U.S. Marine Corps under a DIU contract.

Timeline1

  1. First deliveryReported

    Two prototypes delivered for the U.S. Marine Corps

    Delivered under a Defense Innovation Unit contract for small autonomous boat prototypes.

    SourcesNaval News

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.

Sources1

  1. 1.
    NewsHII, MetalCraft Marine Deliver ROMULUS-25 USV Prototypes for U.S. Marine Corps

    Naval News · May 15, 2026 · Supports: System, System milestone

    “The ROMULUS-25 is a 27-foot high-speed interceptor vessel designed to deliver up to 1,000 pounds of payload with a range of up to 1,000 nautical miles.”

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