In the offshore and maritime industries, marine structure surveys are essential for maintaining the integrity, safety, and performance of critical infrastructure. Whether it’s oil and gas platforms, wind farms, subsea installations, or shipping terminals, these structures are constantly exposed to harsh marine environments. Regular and accurate surveys help detect early signs of wear, corrosion, or structural fatigue, ultimately ensuring safe operations and prolonging the asset’s lifespan.
At Kent Offshore, we specialise in delivering high-quality marine inspection and survey services tailored to the demanding needs of offshore operations. In this blog, we explore what they entail, why they matter, and how they contribute to operational safety and regulatory compliance.
What are marine structure surveys?
Marine structure surveys are detailed inspections of fixed and floating offshore infrastructure. These surveys assess the physical condition of structures such as:
- Offshore oil and gas platforms
- Subsea pipelines and risers
- Floating production storage and offloading units (FPSOs)
- Wind turbine foundations
- Piers, jetties, and coastal terminals
The aim is to identify defects, measure corrosion levels, assess load-bearing integrity, and document changes in structure alignment or foundation stability. Surveys can be topside, subsea, or a combination of both depending on the structure and its location.
Types of marine structure surveys
There are several types of marine structure surveys, each serving different purposes throughout a structure’s lifecycle:
- Baseline Surveys
Conducted at the time of installation, these surveys provide a reference point for future inspections. - Periodic Surveys
These are scheduled inspections carried out at regular intervals, typically mandated by classification societies or local regulations. - Special Surveys
Triggered by specific events such as collisions, extreme weather, or suspected structural failure, these surveys assess potential damage and help plan corrective actions. - Life Extension Surveys
As structures near the end of their original design life, detailed assessments are required to determine if continued operation is feasible and safe. - Decommissioning Surveys
Prior to dismantling and removal, these surveys help plan safe and efficient decommissioning strategies.
How marine structure surveys are performed
Modern marine structure surveys leverage a combination of technologies and methodologies to ensure accurate data collection. These include:
- ROV (Remotely Operated Vehicle) inspections for subsea assessments
- Diver inspections where human expertise is necessary or ROV access is limited
- 3D laser scanning and photogrammetry to create detailed models
- Ultrasonic testing and thickness measurements to quantify material loss
- Cathodic protection system assessments to monitor anti-corrosion measures
- Drone surveys for topside and aerial inspections in hard-to-reach areas
These methods help collect high-resolution data that engineers can analyse to make informed maintenance and operational decisions.
Why marine structure surveys are important
1. Safety assurance
Detecting cracks, corrosion, or deformation early helps prevent catastrophic failures that could put lives, assets, and the environment at risk.
2. Regulatory compliance
Most jurisdictions and classification societies require regular marine structure surveys as part of licensing and insurance requirements.
3. Operational efficiency
Well-maintained structures operate more efficiently, with fewer shutdowns due to unplanned repairs.
4. Cost savings
Preventive maintenance based on accurate survey data is significantly more cost-effective than reactive repairs after a failure.
5. Asset longevity
Surveys enable operators to make informed decisions on repairs, retrofits, or life extension, maximising the return on infrastructure investment.
Choosing the right partner for marine structure surveys
Selecting a competent and experienced provider is key to effective marine structure surveys. At Kent Offshore, we combine industry-leading technologies with highly trained inspection professionals to deliver precise, reliable results. Our commitment to safety, data integrity, and offshore performance ensures that your structures remain compliant, efficient, and secure.
We understand the dynamic conditions and challenges offshore operators face. That’s why our services are designed to adapt to your schedule, minimise downtime, and provide actionable insights tailored to your asset and regulatory requirements.
Final thoughts
Marine structure surveys are not just a regulatory necessity—they are a strategic investment in safety, performance, and asset integrity. With the increasing complexity of offshore operations and the growing emphasis on sustainability, the role of high-quality structural inspections has never been more critical.
Whether you’re planning a new installation, managing a mature asset, or preparing for decommissioning, Kent Offshore is your trusted partner in marine inspection excellence.
Contact us today to learn more about our marine structure survey services and how we can support your offshore projects.
