Skip to content
Defdex

Uncrewed vessel · Sea

STEAMRACER-class USV

Purpose-built autonomous surface ship that Sea Machines is offering for the U.S. Navy's MASC program.

by Sea Machines Robotics · Unveiled Feb 18, 2026

ConceptUncrewed vesselSeaUnveiledFeb 18, 2026

Sea Machines' own-design autonomous surface ship, built around its SM300 autonomy stack and pitched for the Navy's Modular Attack Surface Craft (MASC) competition.

Timeline1

  1. UnveiledReported

    STEAMRACER-class USV unveiled

    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.
    NewsSTEAMRACER-class USV Advances in Major U.S. Navy MASC Program

    Naval News · Feb 19, 2026 · Supports: System, System milestone

    “Sea Machines unveiled the STEAMRACER-class unmanned surface vessel (USV) and announced it is strongly positioned in the U.S. Navy’s final competitive evaluation phase”

Each fact on this page is attached to the sources that support it. Archived copies are linked when we keep one.