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Cathie Associates

Marine Foundation and Offshore Geotechnical Engineering Services

Cathie Associates is one of the few companies in Europe which can provide a full range of marine foundation engineering services, independent of any offshore geotechnical or geophysical contractor.

J.E. Mommaertslaan 22,
1831 Diegem,

Cathie Associates is one of the few companies in Europe which can provide a full range of marine foundation engineering services, independent of any offshore geotechnical or geophysical contractor. Our project experience includes:

  • Desk studies
  • Specification and management of offshore geotechnical and geophysical surveys
  • Management of laboratory testing
  • Pile installation engineering and supervision
  • Cable burial assessment and trenching
  • Engineering
  • Expert assistance

For example, we have been called upon to design tripod foundations, verify mudmat stability, perform leg penetration assessment of jackups, and present the technical case for proposed solutions to national authorities.

Desk studies

Good practice starts with a desk study. A key to getting the best from a geophysical and geotechnical survey is to be prepared with some knowledge of the area. There are few sites in Europe where geological information is unavailable.

Offshore geotechnical and geophysical survey specification and contract management

Offshore geotechnical and geophysical surveys need careful specification, tendering and project management to obtain cost-effective results. Cathie Associates can help to obtain best value for money by carefully specifying and managing geotechnical and geophysical campaigns.

Cable trenching engineering

Often an underestimated task, installation of the inter-field cables and export cables is essential to getting a project up and running. Cathie Associates has unrivalled expertise in assessing cable burial possibilities, selecting trenching equipment and investigating alternative protection strategies.

Dynamic pile load testing and pile driving monitoring

The technology operated by Cathie Associates allows you to monitor pile capacity, soil resistance and stresses in pile and hammer behaviour. A typical team is made of three men with a team leader who is an experienced geotechnical engineer, certified by the Deep Foundation Institute. The team leader provides the contractor with a 24-hour consultancy on all piling issues, and analyses all acquired data for a preliminary assessment of the hammer / pile / soil system virtually in real time.

Our engineers are familiar with the offshore environment, and trained to liaise with barge master and deck foreman to minimize the interference with the installation schedule. Our equipment is extensively reviewed before the operations, and mobilized with 100% redundancy.

Pile driving engineering, supervision and monitoring

Through their long experience of pile installation supervision and monitoring, Cathie Associates engineers have developed a specific expertise in pile driving engineering, including piling in rock.

Our services cover pile driving prediction, analysis of driving data and consultancy services and include:

  • Selection of bammer and minimum thickness pile
  • Prediction of blow count and stresses in pile
  • Assessment of risks of free-fall and pile damage
  • Signal matching with CAPWAP
  • Method by Paquet et al, 1988
  • Assessment of soil parameters from driving data
  • Assessment of pile capacity
  • Training services
  • Dynamic load testing
  • Pile defect diagnostic
  • Expertise for damages or conflicts
  • Operations management and supervision

Girassol FPSO, Luanda, Angola

Girassol is one of the four major production hubs of Block 17, which is operated by Total and its consortium partners.

Greater Plutonio Development, Block 18, Offshore Angola

The Greater Plutonio development, comprising the Galio, Cromio, Paladio, Plutonio and Cobalto fields, lies in 1,200m to 1,600m deep water, approximately 160km north-west of Luanda in the Block 18 concession, offshore Angola.

South Pars

The South Pars field located in Iran is the northern extension of Qatar’s giant North Field. It covers an area of 500 square miles and is located 3,000m below the seabed at a water depth of 65m.

Usan Offshore Oil Field, OPL 222, Nigeria

In February 2008, Total was given approval from the Nigerian Government to begin development of its offshore Usan field. Discovered in 2002, Usan lies in OPL 222.

Pazflor Field Development

Pazflor is located in deepwater offshore Angola block 17, 150km (93 miles) off the coast of Angola and 40km (25 miles) n

Ettrick Field, Outer Moray Firth, UK

The Ettrick field is located in the Outer Moray Firth, 120km north-east of Aberdeen in blocks 20/2a and 20/3a in the UK sector of the North Sea.

Cathie Consortium for DONG Energy Wind Power

Global leader in offshore wind DONG Energy Wind Power has selected Cathie Associates, Ceteal and Ghenova to provide support for its offshore wind farm projects over the next five years.

CBRA Guidelines Adopted Globally

The Carbon Trust's Cable Burial Risk Assessment (CBRA) guidelines, co-authored by Cathie Associates, have now been used as far afield as the CERES Project in Australia.

Cathie Associates Provide Confidence in Cost-Effective Backfill Solution

As one of the only industry contributions to the highly regarded Canadian Geotechnical Journal, a paper co-written by Cathie Associates enables more cost-effective pipeline protection solutions, by avoiding overly conservative burial depths. The publication is part of a special issue on pipeline geotechnics, one of Cathie Associates' special areas of expertise.

Cathie Associates Acquired by Pont

Pont NV and industry leading offshore geoscience and geotechnical consultancy, Cathie Associates, are pleased to announce the acquisition of Cathie Associates by Pont.

Cathie Associates Brussels

J.E. Mommaertslaan 22

1831 Diegem


Cathie Associates Paris

1, rue de Craïova

Immeuble « Les Fontenelles »

92000 Nanterre


Cathie Associates Newcastle

Collingwood Buildings

38 Collingwood Street



United Kingdom

Cathie Associates London

Unit 1 Sycamore Court, Royal Oak Yard

Bermondsey Street



United Kingdom

Cathie Associates Hamburg

Am Kaiserkai 1

20457 Hamburg


Cathie Associates Milan

Via Generale Cantore, 29/A

20833 Giussano (MB)