We have a particular know-how in certain fields. But we are also constantly reinventing ourselves in order to adapt to your unique requirements and provide tailor-made services.

Subsea metrology

Determine with millimetric accuracy the dimensions and relative positions between underwater assets

For the digitization of 3D BIM (Building Information Modeling) we can deliver survey services using underwater acoustic positioning systems or photogrammetry, operated by divers or from a ROV.

Whether it is a quality monitoring during the construction phase or inspection measures after installation, Deparentis offer turnkey solutions adapted to the project requirements and site conditions.

Structures inspections

The underwater photogrammetry solution brings you an innovative vision.

In addition to metrology, the photogrammetric process also allows a visual colour representation that is easier to analyse, for example to create an overview of a large structure or to assess damage of underwater constructions.

This technology is therefore particularly well suited for the inspection of port structures, quays, dams, rockfill dikes or mooring chains.

In partnership with COMEX (link:, Deparentis carry out photogrammetric inspections with the ORUS 3D sensor installed on ROV or handled by divers.

Rov services

The machine to replace the diver, for safer and deeper interventions.

More and more underwater tasks are being assigned to Remotely Operated Vehicles (ROVs) to replace divers, thus limiting human risks and allowing a deeper response.  These robots controlled from the surface can be equipped with cameras, manipulators, sensors and other tools for specific construction and inspection tasks.

The International Marine Contractors Association (IMCA) classifies ROVs into 5 different classes, each with different capabilities. Deparentis is capable of deploying category I (Observation) and II (Light payload) ROVs.

Wreck and uxo detection

To move forward into new areas with confidence.

Magnetometer and gradiometer scans are performed to detect the presence of any buried wrecks or UneXploded Ordnance (UXO).  These investigations are carried out, for example, on sites that will be dredged or that are intended to accommodate new subsea infrastructure, such as oil or gas pipelines, cable, etc.