Underwater sonar inspections with ROVs

Inspecting underwater infrastructure is often a complex and challenging task — especially when visibility is poor or non-existent. That’s where sonar inspections with ROVs come in.

Why Sonar?

Sonar (Sound Navigation and Ranging) uses sound waves to map the underwater environment. These waves bounce off surfaces and return data that is reconstructed into detailed images. This method is not only reliable — it also provides valuable measurements and insights into underwater structures without the need for divers or draining.

At Cspect, we use remotely operated vehicles (ROVs) equipped with 
high-resolution sonar to inspect submerged assets like:

  • Quay walls

  • Submerged pipelines

  • ship hulls

  • Bridge foundations

  • Reservoirs & tanks

Oculus sonar
Results of underwater sonar inspection

  • Clear overview in one image
    We combine multiple sonar images into one complete, easy-to-understand view of the inspected area. This makes it simple to identify damage or problem zones.

  • Accurate location on a map
    We can link the sonar data to a real-world map. This helps you see exactly where any issues are located. (see picture below)

  • Visual size and measurements
    Cracks, holes, or other faults are shown with size indicators. We can also add distance and dimension markers to help you understand the scale of the problem.

  • Tailored reporting
    Need specific details or custom formats? No problem. As the technology develops, so do our outputs — we adapt to your needs.

Benefits of Cspect’s sonar inspections

Whether as part of a routine inspection program or a targeted investigation, sonar inspections can be deployed in numerous scenarios:

  • Preventive maintenance: Identify early-stage defects or deformation

  • Damage assessment: After collisions, floods, or structural failure

  • Construction follow-up: Confirm completion of underwater works

  • Environmental monitoring: Map sediment buildup, debris, or erosion

Read more about our ROV inspections

Interested? Don’t hesitate to contact us!

Typical Applications

sonar image linked to real-world map