Offshore Geotechnical Site Investigations

Safely delivering reliable sub-seabed data to support offshore energy, infrastructure and marine development projects worldwide.

Service overview

Geoquip Marine delivers offshore geotechnical site investigations, providing accurate and dependable sub-seabed data to support engineering design, installation planning and geotechnical risk management.

From shallow nearshore environments to ultra-deep water locations, our integrated vessels, drilling systems and onboard laboratories enable efficient seabed sampling, borehole drilling, in-situ testing and real-time data acquisition.

Seabed testing, including cone penetration testing (CPT and PCPT), provides critical insight into near-surface soil behaviour and forms an essential component of offshore investigations supporting foundation design, cable routing and subsea infrastructure development.

Our integrated geotechnical capability combines offshore investigations, laboratory testing and engineering interpretation within a single delivery model. This ensures consistent data quality, efficient project execution and dependable geotechnical insight throughout the project lifecycle.

Geoquip Marine supports offshore wind, subsea cables, oil and gas, nearshore infrastructure and scientific research projects, delivering reliable data across complex and challenging marine environments.

Key capabilities

Offshore Drilling, Sampling and Coring

Recovery of high-quality soil samples through offshore borehole drilling, wireline sampling, wireline coring, piggyback coring, vibrocorers and large-diameter piston core systems.

In-Situ Seabed Testing (CPT and PCPT)

Seabed and down-hole testing including cone penetration testing (CPT and PCPT) and specialised tools used to characterise sub-seabed conditions efficiently in shallow and deep water environments.

Offshore and Onshore Laboratory Testing

Rapid sample processing offshore combined with advanced laboratory testing and analysis to support reliable geotechnical characterisation and engineering design.

Deepwater and Ultra-Deepwater Operations

Proven performance from nearshore environments to combined water and borehole depths of up to 3,500 metres.

Experienced Offshore Teams

Highly trained crews and onboard geotechnical engineers operating to the highest safety and quality standards.

Real-Time Data Interpretation and Engineering Support

Near real-time interpretation and engineering support during offshore operations to optimise investigation programmes and manage geotechnical risk.

Project approach

01 Scoping and planning

02 Mobilisation and deployment

03 Execution and quality control

04 Data delivery and reporting

01. Scoping and planning

Investigation objectives, locations and deliverables are defined in alignment with foundation concepts, cable routes and project risk profiles.

02. Mobilisation and deployment

Drilling and seabed testing systems are mobilised on our DP2 geotechnical vessels or as standalone spreads, with procedures optimised for safe and efficient offshore operations.

03. Execution and quality control

Experienced offshore teams deliver sampling, drilling and testing with continuous monitoring and immediate issue resolution to maintain data integrity.