Marine Construction Services | Texas Marine & Underwater Infrastructure Support – Ven-Tech Subsea LLC
Ven-Tech Subsea LLC provides expert marine construction services across Texas and the Gulf Coast, supporting shoreline, subsea, and inland infrastructure projects with fully compliant commercial diving teams, ROV support, and specialty underwater capabilities. Based in Corpus Christi, we serve contractors, municipalities, engineering firms, and industrial clients with turnkey support for marine development, repairs, and inspections.
📍 Serving All of Texas | 📞 361-510-8361
Why Choose Ven-Tech for Marine Construction?
As a trusted Texas-based underwater contractor, we bring precision, safety, and deep technical knowledge to every project. Whether you’re installing new infrastructure or maintaining existing marine assets, our experienced dive teams and support vessels offer:
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OSHA-Compliant Surface-Supplied Commercial Diving
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Experienced Project Coordination with General Contractors & Engineers
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ROV-Supported Installation & Verification
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Emergency Deployment Capability Across the Gulf Coast
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High-resolution visual documentation for QA/QC verification
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Full job hazard analysis and environmental protection protocols
We work closely with engineering teams, developers, and construction firms to execute underwater tasks in strict accordance with federal and state safety standards, including OSHA and local marine construction codes.
Our Marine Construction Services Include:
⚓ Pile Installation & Repairs
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Underwater cutting, welding, and pile encapsulation
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Installation of steel, timber, or concrete piles
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Marine growth cleaning and corrosion inspection
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Pile bracing, grout sock repair, and stabilization
🧱 Cofferdam & Caisson Support
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Dive support for caisson construction and sealing
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Leak detection, diver patching, and watertight testing
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Debris clearing and mud removal
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Internal caisson inspection and visual reporting
🛠️ Flange, Valve & Pipeline Installation
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Underwater flange bolting and sealing
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Support for intake/outfall connection points
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Pipe section alignment, welding prep, and bracket attachment
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Subsea grouting and bedding for infrastructure stability
🛥️ Dock, Pier & Wharf Construction
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Jetty maintenance and construction support
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Underwater fender system installation
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U-bolt bracket repairs and cathodic protection
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Scour protection installation and erosion mitigation
🔧 Intake/Outfall Assembly
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Construction or rehabilitation of outfalls
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Precision placement and securing of diffusers
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Screen installation for raw water intakes
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Diver video verification for commissioning
🚧 Bridge Substructure Support
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Pile cap cleaning and inspection
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Epoxy injection and crack monitoring
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Sediment dredging and bottom prep for new structures
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Scour and settlement mitigation
💧 Dredging & Sediment Removal
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Diver-assisted suction dredging
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Pump and pipe setup with containment protocols
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Visual confirmation of dredged areas
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Confined space entry for culverts and headworks
🛑 Emergency Marine Repair
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Flood response and structural damage repairs
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Underwater valve isolation
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Mooring line replacement and anchor resets
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Rapid assessment of critical marine infrastructure failures
Supporting Equipment & Capabilities
Our marine construction projects are supported by a complete fleet of certified personnel and purpose-built equipment:
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Kirby Morgan® Dive Helmets & Surface-Supplied Systems
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20ft Jet Boat and Shallow Draft Dive Vessels
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ROVs with Multibeam Sonar, 4K Cameras, and Grab Tools
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Hydraulic & Pneumatic Underwater Tools
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Dredging Pumps (4”–6”) with Floating Pipe
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Stainless Steel Flange Hardware and Anchoring Systems
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A-frame Lift Support & Hoisting Gear
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Contaminated Water Diving & H2S Readiness
All dive operations are supervised by qualified dive supervisors and documented using our ATHENA™ HSE & Compliance System, ensuring full OSHA compliance and transparent record-keeping.