The underwater laser vision camera for seem tracking and inspection in saline water up to 95 m depth

Underwater inspection of constructions is heavy, expensive and life-threatening operation. There are many cases where robots are used for that purpose instead of professional divers. Still actual measurements and review are usually human task. We propose a device which can implement this task together with underwater drone or robot. Obtained measurement scans can be retrieved on a service boat. A customization quality check can aggregate the measurements and deliver data and signals for quality problems. The proposed solution can be used in wide area of surface quality control fur submarine constructions. Combined with a welding robot the camera can drive the robot within a specified seam and obtain this way a high quality weld.

Application areas

  • Ship repair companies
  • Ship manufacturers
  • Ship inspection authorities
  • Light water (up to 100 m) inspection of pipelines and cables Deep Blue
  • Inspection of platforms for ground oil and gas (up to 100 m)
  • Ports installation construction
  • Internal inspection of tanks of oil tanker when filled with water
  • Underwater Robot development companies for integration of the scanning camera as a tool
  • Pontoon Pier inspection
  • Control of dambs – especially metal gateways
  • Military inspections - submarine parts - underwater
  • Ship propellers defects from cavitation inspection to decide if a propeller needs to be changed or repaired.

Main view of deep blue

Deep blue is using a green laser for best underwater performance.

  • Viewing range ~100 mm
  • Resolution 0.1 mm in the middle
  • FPS 25-50


The structure of the system allows connection of different sensor types for underwater inspection and seam tracking. As usually in the Blue series images are collected by the sensor and processed in the controller.

Underwater complications

Apart the hydro isolation there are several additional problems to be solved. On one side the optical behavior needs to be compensated in the software. The selection of green light is because it is better propagated in water the traditional RED light for triangulation scanning devices. GREEN especially instead of blue as in coastal water the propagation behavior is better.