Site Investigation

Offshore installations are planned in increasingly challenging subsea environments. Design engineers look to UTEC to supplement legacy or incomplete seabed and subsurface data.

UTEC provides precise geophysical and geotechnical data required to satisfy design criteria and identify potential risks to the construction, civil engineering, telecommunications, maritime and hydrocarbon industries. This activity includes a variety of marine geophysical surveying services, tailored to meet client requirements in both shallow- and deepwater (in excess of 1,000 meters) environments.

Using advanced sensors, we help clients identify and avoid potential geohazards, including soft sediments and pockmarks, as well as soil conditions that could compromise the structural integrity and performance of a jack-up rig, barge, platform or pipeline.

Key services include:

  • Lease hazard risk analysis
  • Hydrographic and geophysical surveys
  • Rig and platform site surveys
  • Seabed mapping services
  • Shallow geotechnical survey services
  • Environmental impact assessment


UTEC acquires a wide range of precise marine survey data, including:

  • Multi-beam bathymetry, side-scan sonar, magnetometer, shallow seismic
  • Ground truthing using seabed sampling equipment (vibrocores, piston cores)
  • Geotechnical sampling using cone penetrometer (CPT)


All geophysical data are compiled and cross referenced to geotechnical sample data with the final results combined in a single report. Final charting can be produced on the offshore survey vessel or at our dedicated worldwide processing centres, depending on client requirements. The results are presented in a concise and consolidated survey report, with charts backed up by quality standards independently certified under ISO 9001:2008.

These results are ideally suited for many critical tasks, including pre-engineering design for surface and subsea structures; platform and rig installation; environmental baseline surveys; and port and harbour development planning, helping to identify hazards, such as existing pipelines, cables, debris and other subsurface hazards.


Our Depth of Experience

At UTEC, expertise and precision measurement go hand in hand. Discover the advantages of working with global offshore survey specialists.

Our Services

Latest News