Civil Engineering & Infrastructure
We support complex underwater work in structural and civil engineering projects – even under extreme conditions like zero visibility or pressurized environments.
We support complex underwater work in structural and civil engineering projects – even under extreme conditions such as zero visibility, strong currents, or pressurized environments. Our certified dive teams work closely with engineers and contractors to deliver safe, precise, and on-schedule results.
Services Include
Tunnel construction and hyperbaric (compressed air) work
We provide skilled divers for pressurized tunnel environments, supporting excavation, sealing, and installation tasks while maintaining safety under hyperbaric conditions.
Key Services
- Diver support for excavation, sealing, and installation in pressurized environments
- Safe productivity under zero visibility and high-current conditions
- Proven procedures for chamber entry, decompression, and QA
- Interface with engineers and contractors to hit program milestones
Inspection and maintenance of locks and navigation structures
Our teams inspect gates, chambers, and mechanical systems for wear, corrosion, or damage, and perform maintenance to keep waterway traffic operating smoothly.
Key Services
- Survey gates, chambers, and drives for wear, corrosion, and damage
- Remove obstructions and service seals to keep traffic moving
- Emergency interventions to reduce closure time
- Structured reports to prioritize remedial works
Dam and weir inspections, maintenance, and repairs
We assess structural integrity, remove debris, and carry out sealing or reinforcement work to maintain safe water control and flow management.
Key Services
- Structural condition assessment above and below waterline
- Debris clearance, crack injection, and joint sealing
- Scour, undermining, and leakage investigations
- Long-term stabilization plans aligned to asset life-cycle goals
Culvert and pipeline installation or rehabilitation
From new installations to repairs, we position, secure, and test submerged pipelines and culverts to ensure watertight performance and durability.
Key Services
- Placement, securing, and watertight testing of new assets
- Lining, sleeves, and sectional repairs for aging culverts
- Cleaning/flushing to reinstate hydraulic performance
- As-built documentation with geo-referenced media
Bridge pier inspection and foundation works
We inspect and clean bridge piers and underwater foundations, removing obstructions, documenting condition, and performing structural repairs where needed.
Key Services
- Cleaning, inspection, and defect mapping of underwater substructures
- Concrete/steel repairs to restore capacity and durability
- Obstruction removal to protect navigation and safety zones
- Regular monitoring to track scour and condition trends
Underwater concrete placement and sealing
We place and finish concrete in submerged or tidal zones, applying sealing techniques to prevent leakage, improve strength, and extend the service life of structures.
Key Services
- Concrete placement in submerged or tidal zones without washout
- Pressure grouting and sealants to stop infiltration/exfiltration
- Techniques that improve compressive strength and service life
- Works sequenced to limit traffic or waterway disruption
As-built & condition documentation
We turn field data into clear, audit-ready deliverables. High-definition visuals with measurements and annotations, repeatable survey routes, and BIM/GIS-ready datasets support approvals, warranties, and confident asset management.
Key Services
- High-definition photo/video with measurements and annotations
- Clear, audit-ready reports for approvals and warranties
- Repeatable survey routes for trend analysis
- Data formatted for BIM/GIS and client asset systems
Looking for reliable underwater support on your civil engineering project?
Get in touch with our expert team.
business@tuf-international.comOther Services
Industry & Energy
Our divers carry out inspections, maintenance, and repairs on critical infrastructure in the industrial and energy sectors – reliably and precisely.
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Water & Wastewater Utilities
We perform diving work in wastewater treatment plants and drinking water systems – including inspections, cleaning, and repairs in difficult-to-access or contaminated environments.
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Chemical Facility
Our certified teams handle underwater work in chemical and industrial plants with a strong focus on safety, contamination control, and compliance with environmental regulations.
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Ports & Harbor
We provide diving services for port structures, quay walls, mooring systems, and other harbor infrastructure – safely and efficiently in tidal and confined conditions.
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