Heavy Civil Marine Contractor – Orion Marine Group
Marine pipelines play a crucial role in transporting oil and gas. Your heavy civil marine contractor uses specialized installation methods to ensure the best outcomes.

Marine pipelines are essential for transporting oil and gas. Therefore, you need an expert heavy civil marine contractor to install marine pipelines. Placing a pipeline under the water raises some interesting concerns. For example, keeping your pipeline on the sea floor can be a challenge. Your heavy civil marine contractor uses advanced methods to place and install oil and gas marine pipelines.

Risks of Installing Marine Pipelines

Installing marine pipelines can be quite difficult. The risk of pipeline collapse is highest during the installation process. While your heavy civil marine contractor installs your pipeline below the water’s surface, external over-pressure is at its greatest. This increases the likelihood of pipeline collapse.

Additionally, pipeline buckling can be difficult to detect during installation. This is especially true in deep-water installations. Your marine contractor uses specialized methods and equipment to detect pipeline buckling. This allows them to repair it as soon as possible.

Methods your Heavy Civil Marine Contractor Uses to Install Pipelines

To bypass these issues, your marine construction contractor uses expert pipeline installation techniques. There are three general ways to install marine pipelines, each with many variations. Your marine pipeline installation contractor will customize the process to your project’s needs.

Tow-In Lay

Tow-in lay is one method your heavy civil marine contractor may use to install your pipeline. This method involves suspending your pipeline and using tug boats to tow it into place. Then, your marine pipeline specialists either fill the pipe with water or remove the buoyancy modules. This sinks it into place on the sea floor.


By contrast, the “s-lay” technique involves easing your pipeline off a marine vessel. Then your specialists weld more pipeline on as they go. This creates an s-shaped curve, which is where the method gets its name. Your heavy marine construction company must maintain proper tension by moving the vessel forward at the correct speed. Otherwise, your pipe may collapse during the s-lay method.


The j-lay method also requires pushing your pipeline into the water from a ship. Unlike the s-lay method, your marine construction specialists use a tower to hoist the pipeline almost vertically. This helps reduce physical stress on the pipe. J-lay works best for deep-water marine pipeline installation.

Work with an Experienced Heavy Civil Marine Contractor

As you can see, there are many factors that influence your marine pipeline’s success. Therefore, work with an experienced and qualified heavy marine construction company for the best results.
At Orion Marine Group, we have been providing top-quality marine construction services since 1994. With strategic offices throughout the U.S., we offer our wide range of marine specialty services throughout the U.S., Canada, and the Caribbean Basin. Our team is dedicated to high quality marine structures means you get the best for your project. Contact us for more information about our services and to request a bid for your upcoming project. We are here to serve you.