KORTHOS / ECOSYSTEM / PRODUCT

Envoy AUV

About

About Envoy AUV

Envoy is available with rechargeable batteries or a 1.2-kilowatt hydrogen fuel cell. The fuel-cell configuration measures 8.5 metres, provides up to 2,000 kilometres of range and operates for approximately 15.4 days. Current depth options reach 1,000, 3,000 or 6,000 metres.

A 500-litre flooded payload bay accepts synthetic-aperture sonar, multibeam sonar, sub-bottom profilers, cameras, magnetometers and environmental sensors. Autonomy options include pipeline tracking, terrain-relative navigation and performance-based mission management. Envoy supports survey, subsea-infrastructure inspection, persistent surveillance and seabed operations.

Capabilities

Source-backed capabilities

  • Subsea survey and inspection

    Claimed - Cellula presents Envoy for long-range autonomous underwater survey and subsea missions over multi-day ranges.

    Source
  • Extended sea endurance

    Claimed - Cellula presents Envoy for long-range autonomous underwater survey and subsea missions over multi-day ranges.

    Source

Observed use

Exact-product configurations are shown without inferring supply, purchase, customer status, standard fit, deployment or partnership.

  • Mystic 2000 hydrogen fuel-cell system

    Evaluation - Embedded - Physical - Cellula Envoy used Infinity's Mystic 2000 hydrogen fuel-cell system during its submerged endurance trial announced in April 2026.

    Source

Supply

Supply / Components

  • Cellula Envoy-class AUV

    Hydrogen Fuel Cell Power System - Power Systems - Infinity Fuel Cell and Hydrogen - source: infinityfuel.com

    Source

Timeline

  • Cellula Envoy completes 2,023 km submerged hydrogen-powered trial

    2026-04-21 - Capability - The AUV remained submerged for 385 hours, exceeding its published range specification. More than 4,000 turns and manoeuvres increased energy demand compared with straight-line transit. Hydrogen fuel-cell technology developed with Infinity powered the mission, supporting longer intervals between recovery and relaunch.

    Source

Context

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