Tunnel & Pipeline Inspections
Long-range robotic crawler surveys of intake conduits and aqueducts.
Long-range robotic crawler surveys of intake conduits and aqueducts.
Long-Range Tunnel & Subsea Pipeline Inspection
Multi-kilometer robotic pipeline mapping, acoustic LiDAR profiling, and internal video surveys.
Subsea pipelines, cooling water aqueducts, and municipal outfalls cannot be inspected by divers due to extreme distance, flow velocity, and access limitations.
Chow Marine utilizes specialized long-range crawler robots and swim-capable ROVs equipped with high-resolution rotational profiling sonars, high-definition laser measurement arrays, and multi-kilometer fiber optic tethers.
Our robotic platforms navigate flooded conduits up to 3,000 meters from a single access point, logging internal pipe ovality, crack propagation, joint displacement, sediment accumulation, and biological obstruction.
The collected telemetry is processed into detailed 3D CAD mesh models and geographic GIS layers, providing engineering clients with quantifiable data to prioritize capital rehabilitation projects.
Hydraulic Flow & Ingress Audit
Acoustic Doppler velocity measurement, ingress point rigging, and safety tether winch placement.
Robotic Pipe Penetration
Long-distance tethered insertion with continuous gyroscopic heading and distance encoder logging.
Rotational Sonar & Laser Profiling
360-degree acoustic cross-sectional mapping to detect wall loss, debris mounds, and deformation.
Defect Analysis & 3D Deliverable
Compilation of defect severity index, digital video overlay, and GIS pipeline condition ledger.
| Single-Entry Reach | Up to 3,000 meters (10,000 ft) |
| Diameter Range | 0.6m to 8.0m Conduits |
| Sonar Resolution | Millimeter-Accurate Acoustic Profiling |
| Laser Profiling | Full 3D Internal Surface Point-Cloud |
| Flow Capability | Operates in Active Flow up to 1.5 m/s |
2.2 km Submerged Industrial Cooling Aqueduct Survey
Inspection of 2,200 meters of 2.1-meter diameter steel cooling water line running beneath an active shipping canal.
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Can your pipeline robots operate while water is still flowing through the pipe?
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Can your pipeline robots operate while water is still flowing through the pipe?
Yes. Our specialized flow-tolerant crawlers have heavy ballast and tractor treads that grip pipe inverts in flows up to 1.5 m/s, or we can deploy neutrally buoyant drogue-assisted inspection vehicles that travel with the water flow.
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What is the minimum and maximum pipe diameter you can inspect?
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What is the minimum and maximum pipe diameter you can inspect?
We operate micro-crawlers for pipelines as small as 600mm (24 inches) and heavy ROVs for tunnels exceeding 8 meters in diameter.
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What data format do you deliver to engineering clients?
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What data format do you deliver to engineering clients?
We supply georeferenced GIS data layers, AutoCAD/Civil 3D point clouds, cross-sectional ovality graphs, and interactive 4K video player files indexed to pipeline stationing coordinates.
Ready To Mobilize Crew & Tooling?
Connect directly with our Hamilton operations superintendent for emergency rapid mobilization, site evaluation, and firm engineering proposals.