ROV Workover Control Systems (RWOCS)

Our multi-functional, configurable RWOCS enables remote operation of subsea well equipment, lowering risk to personnel, and generating cost savings.

Our RWOCS offers a robust solution that leverages Oceaneering’s remote piloting and intervention experience, cross-trained personnel, and technological advancements to reduce personnel on board, free up valuable deck space, and enable cost savings.


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Reduces topside space up to 70%

Reduced Crew Size Icon

Reduces crew size by one-third

Remote Piloting Icon

Enables remote piloting from shore

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Faster completion and installation activities

Eliminates HSE Risk Icon

Eliminates HSE risks

Reduce CO2 Icon

Reduces CO2 emissions by 40%

Do more with an ROV

RWOCS optimizes completions, tree installation, workovers, intervention, and plug and abandonment operations. The solution removes the need for large, surface-controlled equipment, moving service activity subsea.

Key features

  • Designed to function with multiple OEM tree designs
  • Multi-use applications for installation of trees, manifolds, and jumpers
  • Extensive components qualification program
  • Capable of subsea pumping at 15k psi (HP supply) and 5k PSI (LP supply)
  • Tray based design for quick simple replacement of components
  • Full FMEA and TRL studies performed
  • Built-in redundancy for critical components
  • Chemical supply available
  • Fluid Storage for control fluids or chemical returns
  • Event logging throughout the operations
  • Modular design enables project-specific configuration

How it works


RWOCS delivers fluid at up to 15,000 psi to any subsea infrastructure with a tie-in point from manifolds and pipelines to pipeline end terminations (PLETs), and trees.

The solution supports completion of systems diagnostics while providing communications and data streaming, enabling reliable remote operations and onshore oversight of activities in real time.

Oceaneering’s RWOCS offers a clear advantage by providing valuable operational savings for deployment, hook up, test and commissioning, and recovery to topside.

RWOCS configurations

Skid Exploded Marshalsea

ROV Skid

Complete shorter operations with our ROV-mounted skid. This configuration requires less fluid, especially for vessel-based operations where an available ROV is already onboard, offering significant cost benefits.

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ROV Compact Skid

Our compact ROV-mounted RWOCS is specifically designed and engineered for shallow water applications and boasts a lower ROV payload requirement, increasing its ROV compatibility.

RWOCS Standalone (1)


The standalone RWOCS benefits from an additional 150 gal of fluid from housed in an extra reservoir and the ability to be deployed subea for longer durations. The standalone version eliminates the dedicated use of an ROV, freeing up a rig or vessel’s ROV to execute other operations and further optimizing efficiency.

The evolution of our experience

Over the last 10 years, Oceaneering has continued to innovate and evolve our workover and control products to take on larger and more complex scopes. Our skids are robust with additional added features.


Tree On Wire Installation (TOWI)

ROV skid based solution to perform Wellhead & Flowline Connector operation and testing activities.


Umbilical Less Tubing Hanger Installation (ULTHI)

ROV skid based solution to replace the umbilical during tubing hanger installation and testing activities.


ROV Operated XT & Tubing Hanger Installation (ROXTTHI)

Subsea solution to replace the open water umbilical during the XT installation and completion activities whilst providing a communication link with SCM.


Power Skids

ROV skid solution with increased hydraulic and electrical functionality to replace the open water umbilical during a XT installation and completion.


ROV Workover Controls System (RWOCS)

Evolution of our skid based solutions with inbuilt redundancy and onboard fluid capacity. Designed to replace the open water umbilical during XT installation & completion activities whilst providing a communication link with the SCM. Further added benefit of providing chemical pumping capabilities during subsea activities



Compact system with all functions required to replace the open water umbilical during a XT completion as well as communication link with SCM.

Learn more about our workover solutions

Contact Us | ROV Workover Control Systems (RWOCS)

Company page Since our founding in the early 1960s, Oceaneering has expanded and grown globally to service several industries such as the offshore energy industry, defense, entertainment, material handling, aerospace, science, and renewable energy industries. In 1964, Mike Hughes and Johnny Johnson formed a Gulf of Mexico diving company called World Wide Divers. The company grew in response to increasing demand for their services and in 1969 merged with two other diving companies to form Oceaneering International, Inc. To solve the toughest challenges, we do things differently, creatively, and smarter. As your trusted partner, our unmatched experience and truly innovative portfolio of technologies and solutions give us the flexibility to adapt and evolve, regardless of market conditions. Our mission is to solve the unsolvable. We thrive by creating industry-changing technically creative solutions for the most complex operational challenges under water, on land, and in space. Our five core values establish a common culture and demonstrate what is most important for us as a company. Since the beginning, the company has transformed from a small regional diving company into a global provider of engineered products and services. Today, we develop products and services for use throughout the lifecycle of an offshore oilfield, from drilling to decommissioning. We operate the world's premier fleet of work class ROVs. Additionally, we are a leader in offshore oilfield maintenance services, umbilicals, subsea hardware, and tooling. We also serve the aerospace, defense, and theme park industries. Underpinning everything we do, safety is not only the foundation of our core values, but it is vital to our unmatched performance record and company culture. The industries we serve are as diverse as they are complex. Whether we are engineering deepwater umbilicals or developing robotics for aerospace applications, the safety and health of our employees, vendors, and customers is an integral part of our day-to-day business. If we are working, then our responsibility is to be working safely. Since our inception in 1964, we have placed a high value on employee safety—from diving services and subsea inspection to vessel-based installation operations. We have and will continue to evolve not only our health, safety, and environmental (HSE) processes, but those of the industries in which we work. Although we have been fatality-free since 1999, our HSE journey goes beyond statistics. As our portfolio of services has grown, we have continued to prioritize and advance our approach to HSE.