rov-survey-2

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ROV System Elements

  • Sea Eye Falcon ROV
  • Umbilical winch c/w 1150M fibre optic cable ( 4 Singlemode + 4 Multimode)
  • Lock latch launch / recovery system
  • Fitted control van towable to site

Market Niche

  • Hydro Power and Dam inspections
  • Deep tunnel surveys
  • Offshore wind farm and renewables
  • Inshore pipeline surveys
  • Archaeological site surveys
  • Salvage location search and survey
  • Offshore operations support

ROV Sensors

    • Colour camera – selection of types
    • HD digital Stills
    • 3D Photogrammetry Rig (1080P+)
    • Diffused LED lighting 10,000 Lumens
    • Laser scaling pinpoint dots
    • Altimeter – Altitude lock mode
    • Depth sensor – Depth lock mode
    • Heading sensor – Heading lock mode
  • Doppler Velocity Log
  • Inertial gyro system
  • Sonar – target location
  • 360 scanning Laser – tunnel profiling

 

Need

  • To survey inclined water filled tunnels to depth of 400M
  • To survey horizontal water filled tunnel length 950M to depth of 30M
  • Tunnel internal diameters 4.5M and 7M respectively

Challenges

  • Determine ROV position in the tunnel with respect to a datum
  • Locate individual features of interest at specific locations
  • Manage umbilical over the distance
  • Ensure sufficient lighting to record clear video along prescribed paths

Solution

  • Use of sonar
  • Use of Doppler Velocity Log – reference Teledyne presentation

Case Study