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Automatic object tracking

OASYS’ features automatic point-cloud based object detection which is applicable to various operations:

  • Tracking objects that are lowered to the seabed: quadrant deployment, mattress installation & deployment of subsea structures
  • Tracking of objects on the seabed such as boulder clearance of trenching ploughs

Accurate object positioning requires high-resolution data. OASYS uses 2D multibeam echosounders (MBES) with a large swath width (10° to 160°), sounding depth and resolution (0.45° x 0.9° at 450kHz) in order to obtain sufficient data quality and position accuracy.

vessel-fixed

MATTRESS INSTALLATION MONITORING

OASYS it’s object recognition capacity is perfect to monitor the position of objects in the water column. The installation of subsea protection mattress is a perfect application:

  • The position, altitude and rotation of the mattress frame is tracked instantly and compared with the target laydown position in order to provide correction values
  • An installed mattress can be surveyed instantly and its location can be used for the installation of the consecutive mattress
  • The system is vessel-fixed and therefore not influenced by current flow velocities
  • Reduce dependency of ROVs when the OASYS is combined with a remote release system on the mattress deployment frame

ASV-based

Boulder clearance / trenching monitoring

Use OASYS from an ASV to monitor plough-based boulder clearance / trenching operations. Key benefits:

  • Monitor the position, heading and orientation of the plough in real-time and compare it with the target route
  • Perform quality-control on the plough performance as disturbed seabed profile and rock berms are directly visible
  • Get a direct indication of the plough’s scouring depth