Searching the seabed

There is still an enormous quantity of unexploded bombs and mines in our inland waters and seas. Independent experts have calculated that there are approx. 1.6 m tonnes of ordnance on the seabed. This represents a danger, especially when extending / installing offshore construction projects. The detailed inspection of the seabed before starting construction therefore serves to secure the construction project, but is also statutorily required in order to prove there is no ordnance.

With our experts in this area and extensive inspection methods, we offer comprehensive, computer-supported locating of offshore areas and shallows, in which the technology corresponds to the IMCA standard. Our offshore specialists work with the latest technology to find and classify ordnance, and if necessary can directly arrange salvage. We primarily use methods for this that do not represent an interference in the ecosystem and we only supplement these if necessary with more extensive practices, such as taking soil samples or carrying out geophysical examinations.

Detection on the seabed

Equipment and technologies used:

  • Caesium vapour gradiometer (Geomatrix G-882 TVG)
  • Fluxgate-Gradiometer Foerster and Sensys
  • Teledyne TSS 440, TSS 350
  • USBL underwater navigation
  • Side Scan Sonar
  • Multibeam Sonar
  • TDEM (Time Domain Electromagnetic) Survey for detecting non-ferromagnetic ordnance, e.g. land mines
  • Submarine Transient Electron-Magnetic sensor (SubTEM) for detecting munitions

Apart from detecting legacy ordnance, our examination techniques also serve the analysis of the soil condition , as a result of which we are able to offer all kinds of underwater inspection necessary for the construction, operation and maintenance of wind farms and cable routes.