Unlocking More Value from Subsea Inspection Through a Question-Led Approach

Across the subsea sector, there is growing recognition that inspection data is being asked to deliver more than ever before. Data captured to support a single inspection is increasingly expected to enable dimensional analysis, change detection and 3D modelling, often long after the original offshore campaign has been completed.

One response to this challenge has been a shift away from rigid, equipment-led inspection methods toward more flexible, question-led approaches. Rather than starting with a predefined capture system, this methodology begins by defining what information is required and how it will ultimately be used. Inspection and data capture strategies are then designed by working backwards from the desired outcome.

Photogrammetry plays a central role in many of these workflows, providing detailed 3D models that support measurement and analysis. However, industry experience shows that photogrammetry alone is not always sufficient. Flexibility in capture methods remains critical, particularly in emergency or unplanned situations where time, access and equipment availability may be constrained. In some cases, technically valuable 3D data can be extracted from limited inputs, such as ROV flight camera footage, when capture is carefully planned and processed.

This approach is increasingly being applied by subsea service providers such as Aberdeenshire-based Viewport3, which works with operators, survey contractors and inspection teams to design bespoke inspection methodologies around specific assets and operating conditions. By focusing on data quality, coverage and intent at the point of capture, projects can reduce the need for repeat offshore visits and increase the long-term usefulness of inspection datasets.

As subsea assets age and inspection requirements continue to evolve, the ability to adapt inspection strategies to meet changing needs is becoming a key consideration. Question-led inspection planning, supported by flexible capture techniques and robust processing, offers one pathway to unlocking greater value from subsea inspection data while maintaining operational efficiency.

These themes were explored during the 2026 Subsea Expo, where Viewport3 Director Richard presented “Divers & Data: Unlocking More Value from Subsea 3D Inspections”, examining how flexible, question-led inspection approaches can enhance subsea 3D outcomes during air or saturation diving scopes.