A18-D is ECA Group mid size Autonomous Underwater Vehicle, AUV, for deep water applications. It is dedicated to accurate 3D seabed Survey. It performs autonomous mission up to 3000 m depth with 21 h endurance, and is easy transportable by plane for oversea missions. This system can be delivered with a LARS allowing automatic underwater recovery and Triton Imaging applications for data post processing.


  • Light deep water vehicle
  • Easy Launch and recovery in bad sea state condition
  • Easy deployment for overseas missions (ISO containers transportation)
  • Extended coverage and endurance capacities
  • User friendly mission management system
  • Flexibility of sensors payload

Applications for Defence & Security Sector

  • Search and Rescue operations for Naval Forces

Applications for Maritime Sector

  • Pipe survey : Pre & Post Survey, Survey and Exploration for Oil & Gas
  • Pipeline survey : Cable, riser and flexible laying for Oil & Gas
  • Deep water structure inspection: Underwater inspection & Surveys for Subsea Works
  • Deep water survey: Survey & Inspection for Mining
  • Deep water bathymetry: Survey for Hydrography Oceanography
  • Hydro-Oceanography Vessel : Ships for Hydrography Oceanography
  • Data acquisition: Hydrographic Systems for Shipyards

Operational Performances

  • Endurance: 24 hours
  • Max speed: up to 6 knots
  • Nominal speed: 3 knots
  • Operational depth: 5-3000 m


  • Body diameter: 50 cm
  • Length: 4.5 to 5.5 m
  • Weight: 550-690 kg
  • Energy section: 14.4 kWh
  • Navigation: Inertial Navigation System (INS), Doppler Velocity Log (DVL), USBL transponder, Global positioning System (GPS)
  • Communication: WiFi, Ethernet, Acoustic, Satellite
  • Safety: Flashing light, Obstacle avoidance sonar
  • Payload: Side Scan sonar, Multi Beam Echo Sounder, Video, Forward Looking Sonar, CTD, environmental sensors
  • Air transportable according to UN38.3 standard


  • Interferometric Synthetic Aperture Sonar
  • USBL or LBL external tracking system
  • LARS for RHIB, large ship, or containerized
  • Surface ship integration
  • Containerized C2
  • Additional sensors on request (Sub bottom profiler, environmental)
  • Sub Bottom Profiler (SBP)


News & Events

A18D in business for AUV Services MARITIME

ECA GROUP demonstrates high performance of its mid-size AUV during deep survey missions

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Shephard: ECA and Petrus to offer oil and gas AUV services MARITIME

ECA Group has signed a cooperation agreement with Petrus to provide subsea robotics services to the oil and gas...

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eca group - auv - A18d - underwater.jpg
Offshore Energy Today: Duo in pact to supply AUVs to oil companies MARITIME

ECA Group and Petrus signed an agreement for the supply of underwater AUV-based services to oil companies.

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