A18-TD is ECA Group twin hull Autonomous Underwater Vehicle, AUV, for deep water applications. Its architecture is ideal for inspection at low speed, hovering or docking. It performs autonomous mission up to 3000 m depth with 21h endurance. This system can be delivered with a LARS allowing automatic underwater recovery and Triton Imaging applications for data post processing.


  • High maneuverability
  • Structure and seabed inspection
  • Automatic underwater docking and recovery capability
  • Extended coverage and endurance capacities
  • Wireless deep water operations

Applications for Defence & Security Sector

  • Critical Infrastructure Protection: Platform surveillance for Homeland Security

Applications for Maritime Sector

  • Pipe survey: Pre & Post survey for field development
  • Pipeline survey: Cable, riser, flexible laying for Oil & Gas
  • Touch down monitoring operations for Oil & Gas
  • FPSO, Rigs inspection & cleaning: Mooring inspection by robots
  • Deep water structure inspection for subsea works
  • Deep water survey: Survey & Inspection for mining
  • Underwater structure inspection : Immerged Structures (Hydraulic dams, wind farms, fish farms, turbines)
  • Underwater structure inspection: Energy & Telecommunications cables survey

Operational Performances

  • Endurance: 24 hours
  • Max speed: up to 6 knots
  • Nominal speed: 3 knots
  • Operational depth: 30-3000 m


  • Width: 1.8 m
  • Length: 4.7 m
  • Weight: ~1200 kg
  • Energy section: 22 kWh
  • Navigation: Inertial Navigation System (INS), USBL, LBL, Doppler Velocity Log (DVL), Global Positioning System (GPS)
  • Communication: Radio (UHF), WiFi, Ethernet, Acoustic, Satellite
  • Safety: Flashing light, Obstacle Avoidance Sonar
  • Right Payload: Right Synthetic Aperture Sonar antenna, Multi Beam Echo Sounder, 1 vertical camera
  • Left payload: Left Synthetic Aperture Sonar antenna, Laser profiler, Turbidity / fluorimeter / dissolved gas sensors, wireless transceiver, 1 vertical camera
  • Air transportable according to UN38.3 standard


  • Ultra-Short Baseline (USBL) or LBL LARS for RHIB, large ship, or containerized
  • Underwater Docking Station
  • Surface ship integration
  • Containerized C2
  • Additional sensors on request (Sub bottom profiler, environmental)
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