Offshore engineering is a risky business, where many decisions need to be made on the basis of a fraction of the information available for comparable onshore projects. Design parameters which rely on a knowledge of soil conditions can be some of the most important values to get right, yet are often associated with a high degree of uncertainty.

GeoDDO is a consultancy which provides analysis of seabed and soil data in a format that engineers can use, with over 20 years of experience of providing evaluations of geological, geophysical and geotechnical data for the offshore construction industry.

We understand what the issues are, and how the seabed can determine whether your offshore installation goes smoothly or ends up in a hole; both financially and literally!






  • Desk studies
  • Geohazard assessments
  • Interpretation of geological, geophysical and geotechnical data
  • Preparation of technical arguments
  • Preparation of work scopes for engineering surveys
  • Burial assessment studies

  • Reporting in English, source material may be supplied in Danish, English, French, Italian, Norwegian, Portuguese or Spanish





  • Angolan Continental Shelf and Slope · Evaluations of geophysical and geotechnical data for engineering design, provision of survey work scopes, evaluation of sub-contractor proposals for pipeline burial work.
  • Baltic and North Sea (Danish, Finnish, German and Swedish waters) · Over 20 years experience in acquisition and evaluation of geophysical and geotechnical data, seabed risk evaluation and trenchability studies · Client representative, quality control and specialist contribution on major projects including TAT-14, Great Belt Fixed Link, Øresund Bridge and Nord Stream.
  • Canadian Shelf / Slope · Feasibility studies for gas export pipeline options from production centres on the Newfoundland Grand Bank.
  • Mediterranean and Black Sea (Bulgarian, Egyptian, Italian, Libyan, Russian, Spanish and Tunesian waters) · Pipeline route and site assessments, geohazard assessments, trenchability studies, evaluation of trenching proposals.
  • UK and Norwegian Continental Shelf / Slope · Geotechnical and trenching assessments, geohazard and risk analyses, input to commercial tenders and engineering design work, preparation of technical arguments and back-analysis of trencher and plough performance data, including deep water and Arctic regions ·  Offshore inspection, acquisition and interpretation of geophysical data.
  • Courses and workshops · One hour to two-day presentations and courses designed to provide an understanding of the role of geology, geophysics and geotechnics within the offshore engineering industry · Interactive course in geohazard recognition and evaluation, variable emphasis according to client needs. Target groups: Offshore pipeline and project engineers, geophysical survey company staff.

  • Additional detail provided on request.

Contact: Julie M. Dyer

  • Julie M. Dyer
    54026 (MS)
  • Phone: +39 0187 183 51 94
  • Email: