Home > Products > Products by product area > Subsea systems > Echo sounders > Multibeam Echosounders >

Multibeam echosounder / Sonar, Maximum depth 50 m


M3 Multibeam Echosounder / Sonar System

Contact us

The M3 Sonar is a 2D multibeam system with imaging and profiling capabilities. The M3 Sonar provides high-resolution and easy to interpret images by combining the rapid refresh rate of conventional multibeam sonar with image quality comparable to a single-beam sonar.

Detection of small objects out to 150 meters combined with a 120° to 140° field of view allows the operator to see the complete underwater picture in real-time.


  • Multiple modes for multiple applications
  • GeoTIFF output
  • Multiple true zoom windows
  • CHIRP and Doppler modes of operations


  • High update rate
  • Significant time savings during operations
  • Uniform large coverage area
  • MultiMode capability
  • Low power consumption
  • User friendly

Installation options

  • Pole mount on a surface vessel
  • Suitable for a wide range of vehicles from large work-class ROVs to small observation class ROVs
  • Tripod mounted

Image / video galleries

Click on the links below to view the latest videos and images from the M3 Multibeam Sonar:

 IHO compliance:

  • Vertical Accuracy compliance can be met over the full ±60° sector for Order 1 surveys and to at least ±55° for Special Order
  • Special Order target detection (1m cube) is met to 20m and Order 1A target detection (2m cube) is maintained to 40m

M3 Sonar Applications

Marine Engineering & Site Inspection (MESI)

  • Structure inspection in ports and harbours
  • Dam and water intake inspections
  • Bridge pier and dock inspections
  • Shallow water surveys
  • Outfalls and pipe inspections
  • Pipeline surveys
  • Dredge monitoring

Search & Recovery (SAR) / Security

  • Berth clearance
  • Hull inspection
  • Piling inspection
  • Unexploded Ordinance (UEXO) / IED detection
  • Body and evidence detection/recovery
  • Diver direction and supervision

Underwater Vehicle Instrumentation (UVI)

  • ROV
    - Navigation, obstacle avoidance, rapid mosaicking
    - Bathymetric survey, pipeline survey
  • Trencher/Plough
    - Navigation, obstacle avoidance
    - Trench profiling

Environmental Monitoring

  • Mammal behaviour monitoring
  • Fish monitoring
  • Geological studies (bedforms and gas bubble/seeps)
  • Wastewater ponds & lagoons
  • Archeological sites & ship wrecks detection
  • Coral reefs monitoring

Installation Options

  • Suitable for a wide range of vehicles from large work-class ROVs to small observation-class ROVs
  • Pole mount on surface vessel
  • Tripod mounted

System components

M3 sonar package
M3 sonar package

The system is made up of three main components:

  1. Sonar head – transmits and receives acoustic pulses
  2. Operations cable and power supply – supplies power to the sonar head
  3. Computer – operates the M3 software that manages communication with the sonar head and presents the sonar imagery for the operator

M3 Sonar Software

The M3 software was developed specifically for the M3 system to manage communications with the sonar head and operate all beam-forming and imaging processing.

Four Pre-Defined Modes

  1. Imaging: Long range navigation with high speed update
  2. Enhanced Image Quality (eIQ): Greatest image quality (0.95° angular resolution) from a short range with a slower update
  3. ROV Navigation: Selects eIQ or imaging based on range
  4. Profiling: Narrow 3° beam used to generate a 3D point cloud

Supported data acquisition software

  • Hypack Hysweep
  • EIVA NaviSuite
  • Forum VisualSoft Suite

Supported post processing software

Contact us