A18-S is the imaging configuration of ECA Group A18 Autonomous Underwater Vehicle, AUV, family. It is designed to perform accurate 3D seabed Survey. Deployed from surface ship, this system can be delivered with a LARS allowing automatic underwater recovery. It operates autonomously up to 300 m depth with 21h endurance, and is easy transportable by plane for oversea missions.


  • AUV with Interferometric Synthetic Aperture Sonar (ISAS)
  • Easy launch and recovery in bad sea state condition
  • Extended coverage and endurance capacities
  • User friendly mission management system

Applications for Defence & Security Sector

  • Critical infrastructure protection: Surveillance ships for offshore protection
  • Search and Rescue operations for Naval Forces
  • MIO Ships: Surveillance ships for offshore protection

Operational Performances

  • Endurance: up to 24hours
  • Max speed: up to 6 knots
  • Nominal speed: 3 knots
  • Operational depth: 5-300 m
  • Max area coverage rate (ACR): 2.1 km² / h
  • Frequency: 300 kHz
  • Max range: 265 m
  • Max swath: 530 m
  • Along track resolution: 3 cm @ 265 m


  • Body diameter: 18 inches (46.5 cm)
  • Length: from 3.8 m
  • Weight: from 370 kg
  • Energy section: 11 kWh
  • Navigation: Inertial Navigation System (INS), Doppler Velocity Log (DVL), USBL transponder, Global Positioning System (GPS)
  • Communication: Radio (UHF), WiFi, Ethernet, Acoustic, Satellite
  • Safety: Emergency pinger, Strobe light, Fault and leak detection, on request: Obstacle Avoidance System, Iridium, Local Remote Control for surface recovery
  • Payload: Synthetic Aperture Sonar, Video, Forward Looking Sonar, CTD, environmental sensors (Turbidity)
  • Air transportable according to UN38.3 standard


  • USBL or LBL external tracking system
  • LARS for RHIB, large ship, or containerized
  • Surface ship integration
  • Containerized C3
  • Additional sensors on request
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