Nonius Engineering Company.
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and underwater works

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For Multibucket dredgers

Nonius™ MultiBucket


The 3D positioning and monitoring system for multibucket (or bucket-chain) dredgers provides a significant increase in efficiency of bottom dredging. The dredge master can control the location of the dredger with regard to the depth map, as well as the location of the draghead against the bottom surface, target depth and boundaries. Moreover, an operator can always identify the areas where the works haven’t been performed yet.

The automatic reporting module lets the manager obtain data on performed works without involving any personnel, allows realtime remote supervision and assessment of workflow and progress comparison of several operators. If the systems are installed on more than one dredger, operation of all equipment units can be supervised by means of the online interface, ensuring objective assessment of the production situation in general.


  • Real-time spatial control of the dredger and its buckets.
  • Bottom dredging process logging (control of the bottom surface by means of colored depth maps, a digital tablet and 3D representation).
  • Use of 3D bottom models as project layouts.
  • Introduction and editing of designed level marks (as well as lines, inscriptions and other details on the topographic map).
  • Remote monitoring of the production process.
  • On-the-fly recording of performed works, equipment and personnel operation time.
  • Automatic reports on executed works, including the cubic volume, scope of excess excavation made, treated area etc.

If Nonius™ MultiBucket and Nonius™ FleetControl are used together, the module of automatic reporting allows the Manager to check the scope of completed works without involvement of the staff, as well as to remotely supervise the progress of works real-time, to assess the dynamics of works and to compare progress achieved by several operators. If the systems are installed on several dredgers, the online interface FleetControl allows to supervise the operation of all units of equipment and to objectively assess the overall production situation.