Offshore Pipeline

Submar introduced concrete mat technology to the Gulf of Mexico in 1990. Since then, it has been used successfully for pipeline separation, stabilization and protection, making the Submar mat an industry standard for DOT/PHMSA, BSEE, offshore contractors and pipeline operators who choose Submar mats time and again because of their quality, superior performance and value. Our customers also feel safer using Submar products and installation frames, which come with a full warranty and 24-hours a day, 365-days a year shipping and support from our trained personnel.

Additionally, Submar offers its patented non-shielding, non-abrasive pads for use with the mats. These pads were developed especially to protect thin-film epoxy coated pipelines from coming in contact with concrete mats. They are designed to avoid interference with your cathodic protection system and to prevent damage to fusion-bonded epoxy and other coated pipelines. Open areas will remain even when the pad is fully compressed.

Check out our mats in action on Discovery Channel. 

Environmental Compliance

Compared to traditional trenching, articulated concrete mats are an excellent solution for reducing environmental impacts to our coastal areas, which is why Submar is your one-stop shop for compliance with the Department of Wildlife and Fisheries General Permit #24.

pdf-icon-smClick here to download Environmental Compliance form CUP-GP-24.


Most Widely Used Offshore Products 

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  • Pipeline Protection & Stabilization
  • Pipeline Separation & Cover
  • Pipeline Spanning, Capping & Abandonment
  • Pre-Lay & Post-Lay Crossings
  • Free Span Correction
  • Pipeline Vortex Shedding
  • Rig Pads & Subsea Staging Areas
  • Pipeline & Umbilical Anchoring
  • Valve Protection
  • Pipeline Weight Coating
  • Reusable Offshore Foundation
  • Pipeline Thermal Expansion


  • Standardized Sizes
  • Easy Installation
  • Reusable & Durable
  • Economical
  • Stocked in Multiple Locations

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Safety – Subsea Multi-Mat ROV Friendly Deployment Frames

The single and dual release frames are capable of installing multiple Submar mats at one time, reducing hours of deployment and overall days at sea.

Submar’s articulating concrete mat technology is flexible on two planes and will conform to any structure or terrain.

Because safety is Submar’s highest priority, every six months we perform safety testing on all Submar rigging and frames. This testing and our subsequent certified safety documentation ensures that our materials and equipment are of the highest quality. All rigging and parts are American made and of the highest quality.

Submar’s Frames

  • Reduce Bottom Time
  • ROV/Diver Friendly
  • Safe/Fast Release
  • Deploy Quickly
  • Fail Safe
  • Environmentally Safe


Submar’s patented mechanical frames promote safety, save time and money, and are available for rent to aid in the offshore installation of Submar mats.

Interested in learning more? Please contact us.