Inspection Without Dewatering

Inspecting water-filled tunnels doesn't have to mean downtime or risk. Our ROV-based solutions provide detailed insight into their condition, without dewatering and with reduced downtime.

We combine tunnel scanning, ROV mapping, and photogrammetry to give you a complete picture of what it actually looks like underwater.

What Can We Map?

Water-Filled Tunnels

We map entire tunnel sections and provide detailed data on

• Cross-sections and Configuration
• Debris and Deformations
• Deposits and Blockages

Mapping can be carried out over long distances (up to several kilometers), with high precision and low impact on operations.

Underwater Structures and Objects

Do you need to check the condition of concrete, steel, or rock?

With ROV and photogrammetry, we can

• Detect damage, wear, and corrosion
• Document condition visually and in 3D
• Assess the need for action

This often replaces the need for dewatering or diver inspection.

Bottom Conditions and Surroundings

We answer the questions you really have

• What does the bottom look like?
• Is the route suitable for cables or pipes?
• Are there any foreign objects or obstructions?
• What are the conditions around the structure?

This provides assurance before further work.

How we solve it

We use a flexible ROV platform that can be adapted to the task, whether you need simple inspection or advanced modeling.

Tunnel mapping

• Conducted without personnel in the water
• Speed up to approximately 1 km/h in stable conditions
• Result: point cloud, 3D models, and inspection data

This provides rapid control over long tunnel sections – with minimal downtime.

Underwater photogrammetry

Using advanced camera technology (e.g., dual-camera systems), we build detailed 3D models of objects.

You get

• High-resolution visual models
• Documentation that can be used for analysis and comparison over time
• Ability to inspect details without physical access

We combine technologies as needed

• Sonar + visual inspection
• ROV + photogrammetry
• Mapping + condition assessment

This gives you more value per operation, and a better basis for decision-making.

What you receive

Deliverables are tailored to your needs, and may include

For tunnels

• Point cloud and 3D model
• Cross-section and capacity analysis
• Inspection report

For structures

• High-resolution 3D models
• Photo and video documentation
• Condition assessment

For ROV inspection in general

• Visual documentation
• Report with recommendations
• Data in desired formats

What this offers you

• Full insight without production downtime
• Reduced need for risky operations
• Better basis for decisions before interventions
• Lower costs over time

You get answers to how it actually looks – not just assumptions.

‍

‍

‍

‍