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Since 1969, UCC has been a global leader in underwater construction services, providing comprehensive solutions including commercial diving, marine construction, underwater inspection, and technical support. Our expertise spans a wide range of industries, helping clients achieve their goals on reservoirs, rivers, harbors, and coastal environments. From nuclear decommissioning to underwater dam maintenance, we leverage the latest technologies and certified team to deliver safe, efficient, and high-quality results.

We serve customers with assets located in diverse aquatic environments, combining decades of experience with innovative technology and specialized skills

Explore the industries we serve and contact us to discuss your project specifications:

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Explore Our Full Range of Underwater Construction Services

Our underwater construction and marine services cover every aspect of diving, inspection, maintenance, technical support, and remote operations. Discover how our expertise aligns with your project needs and contact our team anytime to discuss your requirements.

Commercial Diving

With industry-leading experience and proven processes, UCC provides inspection, maintenance, construction services on a range of underwater structures, as well as deep diving capabilities. Our expert team delivers reliable performance and precision compliance.

Carbon Fiber Wrapping

Whether we are reinforcing, repairing or protecting important structural elements, our carbon fiber wrap application services can extend lifespan by 30-50 years. Learn how we select and install the right solutions to help maintain the integrity of beams, piles, pipes, tunnels and more.

Marine Construction

From repairs to large-scale infrastructure projects, we provide marine construction capabilities with expertise. Our highly-trained team has the technology and marine vessels to get the job done. From Marine Piling and Pier Repair to heavy construction – we can support even the toughest tasks with ease.

Remote Operated Vehicles

Whether used for inspection, pre-dive condition assessment, or task completion, we deploy the latest ROV technology for efficiency, safety and reportability. From compact units for confined spaces to large, inspection-class vehicles, ROVs provide a critical role in our commercial diving efforts.

Underwater Nuclear Services

As the first commercial diving company to specialize in nuclear diving services, UCC has the expertise you can rely on for safety and compliance. We support nuclear decommissioning, plant inspection and maintenance, as well as underwater nuclear welding.

Underwater Dam Services

Whether you need dam inspection and maintenance for an existing structure, or support with new dam construction, UCC has proven expertise. From waterways to hydroelectric utilities, we bring the technology and processes that maintain safety and efficiency.

Design-Build Diving

From pre-design marine surveys to underwater construction services, our team can serve as the primary underwater contractor or as a specialized member of the design-build team. With deep expertise working on dams, water treatment facilities, power plants, bridges, piers, and more, UCC is ready to support your project.

Dredging and Dewatering

With capabilities for hydraulic, mechanical and water intake dredging, UCC helps keep waterways and intake/discharge systems flowing. Once debris and sediment are removed, our dewater solutions can separate solids and water, reducing disposal requirements, space and releasing clean water when possible.

Underwater Inspection Services and Technical Support

We provide detailed underwater inspections, condition assessments, and project support, including material selection, procedure development, and scheduling assistance. Our highly qualified inspectors and technicians use site-specific procedures, innovative practices, and advanced technologies to deliver accurate, relevant data. All inspections are performed by certified divers and technicians trained to meet applicable industry codes and standards. From underwater pipeline inspection to assessments supporting the repair and maintenance of underwater structures, our team brings years of expertise to your project.

Maintenance, Repair, and Rehabilitation Services

Our preventative maintenance, repair, and rehabilitation services are designed to reduce costs, minimize downtime, and avoid costly unplanned work. We specialize in turnkey projects including structural repairs, underwater concrete work, and carbon fiber wrapping for reinforcement. Our teams collaborate closely with you to tailor maintenance programs consistent with your facility’s unique technical specifications and operating requirements.

UCC Milestones

Taking U.S. Diving Expertise Global

1987: UCC completed its first international project in Taiwan, marking the beginning of decades of worldwide marine and underwater construction work.

Underwater & Marine Construction Services

UCC supports complex marine construction projects with skilled diving teams and advanced equipment. Our offerings include:

Specialized Diving and Remote Operations

Our certified commercial diving services deliver safe and efficient underwater access for inspection, construction, and maintenance projects. Complementing our diving teams are advanced ROV Underwater inspection services that provide visual inspection, data collection, and support in challenging environments where human divers cannot operate.

ROV

We also specialize in:

Leading Commercial Underwater Construction for Critical Infrastructure

Underwater structures are essential for safe transportation across waterways and for critical operations in power generation and water treatment. Since 1969, the UCC team has led the industry with technical innovations, process development, and successful project execution in marine and underwater environments.
UCC is known as a company of “firsts,” consistently setting the bar for performance and safety in commercial underwater construction. From the first recorded nuclear dive to the first company to provide major underwater rehab of a large marine aquarium, companies rely on us to support their critical infrastructure. Our services include:

  • Underwater construction and repair of nuclear, fossil and hydroelectric power plants
  • Ongoing maintenance and cleaning of utility water intake and discharge systems
  • Inspection and repair of industrial pipelines and outfalls
  • Underwater pier and piling repair at marine terminals, bridges and other underwater structures
  • Inspection, maintenance, and repair of tanks, pipelines and holding systems in water and wastewater facilities
  • Dam maintenance and repair, including spillways, gates, trash racks, embankments and foundations
  • Waterway management, including construction of fish passageways at dams, dredging and dewatering

Reach out to our team today to discuss your underwater diving needs. With offices and supporting teams around the world, we are ready to dive into your project. Contact a location near you, or fill out the form on this page.

Why UCC: A Culture of Leadership. A Company Founded by Divers.

Since 1969 UCC has been a recognized leader in commercial underwater construction services, delivering specialized solutions for critical infrastructure across power generation, transportation, water utilities, and industrial facilities.

UCC combines a highly trained workforce of over 200 divers, support personnel and project managers with a global operational footprint, allowing us to provide capabilities that range from rapid-response repairs to complex, multi-year turnkey underwater construction projects. 

Safety is central to every UCC project. We provide rigorous training programs, strict adherence to industry standards, and hold ADCI certification and ISNetworld RAVS Plus verification for health, safety, and environmental performance. With combined expertise across inspection, maintenance, and full-scale underwater construction and rehabilitation, UCC delivers reliable, cost-effective solutions that minimize downtime and extend the life of critical infrastructure worldwide.

Reach Out to Discuss Your Project Today

Frequently Asked Questions About Our Commercial Underwater Construction Services

Yes. UCC divers are fully certified to Association of Diving Contractors International (ADCI) standards and are trained under strict safety protocols, with comprehensive insurance coverage for all operations. The company also participates in ISNetworld RAVS Plus, an independent audit program that verifies the strength and compliance of its health, safety, and environmental practices.

Yes. UCC provides rapid-response emergency underwater inspection and repair services to address critical infrastructure issues, helping minimize downtime and restore operations safely and efficiently. With a network of locations and global capabilities, we often can have teams arrive on site within hours.

Yes. UCC divers are trained and equipped to operate in low-visibility, confined, and hazardous environments using specialized procedures, advanced equipment, and strict safety protocols. When a project requires it, UCC utilizes our specialized test tanks to train and prepare for difficult dives, troubleshooting challenges, reducing dive times, and streamlining our processes before we start your project.

Yes. UCC performs comprehensive underwater inspections, surveys, and site assessments to evaluate conditions, identify issues, and support effective project planning and execution. From ROV inspections to reports generated by a full dive team, our project managers and planners work to help you maximize operational efficiency, safety, and results.

Yes. UCC delivers detailed reporting which can include written findings, high-quality photos, and video documentation – giving customers clear visibility into underwater conditions and completed work.

Yes, UCC operates a dedicated fleet of vessels, barges, support boats, and dive platforms to support commercial underwater construction services. Each is equipped with advanced diving systems and specialized technology and is captained by licensed experts. UCC is fully equipped to safely execute projects ranging from inspection to complex underwater construction. Explore some of our fleet.

Leverage the UCC Advantage

Our underwater construction services and expertise will help you attain your project goals. From rapid response, emergent work, to large-scale, multi-year service contracts, we will create the ideal solution to meet your specifications. Our proven track record, certified personnel, and commitment to safety make UCC your trusted partner in underwater construction and marine services.

 

Reach out to discuss your project specifications and learn how UCC can deliver safe, efficient, and innovative underwater solutions.

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