SCAR Seabed System

The SCAR Seabed Trenching System combines plough and water jetting systems that have evolved through project experience, lessons learned, and continuous improvement into a market-leading pre-cut trenching, backfill, and jetting service offering.

Exclusive SCAR benefits:

  • With our faster trenching times, your project will require less vessel days.
  • Single-pass combined route clearance and trenching
  • Trenching 4X faster in arduous soils than cutting options
  • Accept soils risk – Step change in trenching contracting
  • Quantify burial performance pre-lay by removing soils risk up front
  • Increase lay tension to increase lay speed

We offer a flexible trenching package based on your requirements. Our offering spans from individual assets for specific route clearance, jetting or pre-cut requirements to a comprehensive optimized solution combining our assets to offer a turnkey service for interconnector or wind farm cable projects.

Route Preparation

SCAR system performs route preparation and clearance for pipe and
cable lay installations

Even our Plough is Smart

From soft to hard soils, dense or sporadic boulder distribution, our tooling is ideal. The SCAR system continues to evolve with the addition of cutting-edge subsea positioning equipment, plough performance feedback instrumentation, and software tools that increase route clearance efficiency.

With over 3,000 mi (5000 km) of boulder clearance and trenching expertise, our SCAR system is ideal for dense boulder fields. Our setup lowers project cost, minimizes seabed disturbance, and is deployed for significantly less time than a conventional boulder grab. For scattered boulder distributions or large boulders from berms, our intelligent boulder grab is quickly deployed to keep your project on track.

  • Over 6.2 mi/day (10 km/day) @ 32.8 ft (10 m) wide
  • Boulders up to 6.5 ft (2 m)
  • No downtime
  • Wide corridor width (multi-pass solution)

Pre-Cut Trenching Services

Our SCAR trenching tool is the only pre-cut plough on the market that achieves target trench depth in a single pass. Pre-cut trenching enables repeatable, guaranteed depth of burial in arduous soils and eliminates the risk of in-trench boulders. SCAR provisions for increased cable lay tension that increases the vessel lay speed and reduces project cost. Our pre-cut process enables continuous product lay on schedule [over 1,312 ft/hr (400 m/hr)], reducing your project risk and providing certainty in depth of burial.

  • Overcutting the trench allows for trench infill prior to product lay
  • 4X faster than mechanical cutters
  • Removes trenching from the critical path

Backfill

In backfill mode, the SCAR system ensures cable protection with indigenous seabed material by returning soil to the trench that was displaced during pre-cut trenching operations, leaving the seabed in near original condition and eliminating the potential of net-cable interaction during trawling activities. The SCAR Backfill Plough eliminates interaction with a cable during operations, eliminating the risk of cable damage when compared to Simultaneous Lay and Burial (SLB) solutions.

Backfill progresses at approximately 1,312 ft/hr (400 m/hr) and, when combined with the pre-cut plough, offers a cost-effective solution for arduous soils. The backfill plough is in a continuous improvement program and was upgraded with subsea positioning, plough performance instrumentation, and visual feedback to improve plough performance.

REN Scar Seabed System Backlifting 1

Jetting

SCARJet is a step change in jetting. For shallow water projects, our patented energy containment system (ECS) is ideal for longitudinally stiff cables and ensures that soil stays fluidized longer, providing the best opportunity to meet the specified depth of burial. For environmentally sensitive areas, low particulate suspension and surface mounted pumps make SCARJet the most environmentally friendly jetter on the market.

  • Compact and lightweight
  • Deployable from construction or AHTS vessel
  • Excels with longitudinally stiff cables
  • Reduces second-pass trenching
  • Lowest particulate suspension in the water column of any trencher
  • Lowest subsea noise profile on the market
Contact Us | SCAR Seabed System

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.