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SG-1 Fathom

About

About SG-1 Fathom

SG-1 Fathom is an autonomous underwater glider designed for persistent acoustic surveillance. The vehicle can move through the water column or settle on the seabed, conserving energy while listening through its sensor payload. Lura processes acoustic information onboard, classifies relevant contacts and transmits only selected results.

Helsing intends SG-1 units to operate as constellations across large maritime areas, with one team supervising many vehicles through the Lura mission platform. Lean launch and recovery allows deployment from commercial or military vessels without a specialist submarine tender. The gliders are being designed for scalable production in Helsing’s resilience factories and for applications including subsurface surveillance and protection of critical undersea infrastructure.

13 JUL 2026

Helsing’s $1.8B Raise Extends Germany’s Autonomy Funding Run

Capabilities

Source-backed capabilities

  • Operating environments: Naval Base Portsmouth demonstration and intended ocean patrol areas
  • Control modes: Autonomous
  • ISR and tactical support

    Demonstrated - 2025-05-13 - Use Lura onboard to detect, classify and report underwater acoustic threats. - environment: Naval Base Portsmouth demonstration and intended ocean patrol areas

    Source
  • Extended sea endurance

    Claimed - 2025-05-13 - Patrol underwater for the manufacturer-rated duration of up to three months. - environment: Naval Base Portsmouth demonstration and intended ocean patrol areas

    Source

Timeline

  • Helsing acquires Blue Ocean to accelerate autonomous underwater vehicle programme

    2025-10-07 - Acquisition - Helsing acquired Blue Ocean, a specialist in autonomous underwater vehicles. The acquisition followed Helsing's launch of SG-1 Fathom and its testing at the BUTEC underwater military test range. The deal accelerates Helsing's maritime defence programme around AI-powered autonomous underwater systems.

    Source
  • Helsing unveils Lura and SG-1 Fathom for autonomous underwater surveillance

    2025-05-13 - Product Launch - Helsing unveiled Lura and SG-1 Fathom for autonomous mass surveillance and defence of underwater environments. SG-1 Fathom is an autonomous underwater glider designed for scalable persistent surveillance. Lura provides acoustic AI software for detecting and classifying underwater threats.

    Source

Context

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