Allseas is a world-leading contractor in the offshore energy market. Experts in the design and execution of large and complex offshore projects, we are constantly pushing the boundaries of technology. Designed and optimised in-house, our versatile fleet of specialised vessels operate worldwide, equipped with the most advanced equipment and systems. Allseas specialises in four core activities: offshore pipeline installation, heavy lift, deep-ocean polymetallic nodule collection and river waste collection.

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Pipelines and subsea

Allseas specialises in the design and installation of subsea pipelines and associated seabed structures for all water depths; from very shallow to ultra-deepwater environments.

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Heavy lifting

Allseas has revolutionised “single lifting” by developing an innovative technique to install and remove entire offshore structures in one lift using a motion compensation system developed in-house.

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Allseas continuously improves the performance of its vessels and equipment by developing new technologies that enable us to execute more challenging projects safer, more efficiently and to the highest quality.

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Allseas has various specialised facilities where custom-made equipment and structures for commercial projects are fabricated, as well as parts for vessel new-builds and vessel modifications.

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River Plastics Removal

Plastic pollution is a global problem, and we are committed to the effort to clean our oceans by developing systems to collect waste in rivers and waterways before it flows out to sea

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Allseas contributes to maintaining a clean and healthy environment by devising solutions such as single-lift platform decommissioning, in that manner also protecting the sea.
Our vessels operate with state-of-the-art machinery to minimise exhaust fumes.

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For over 30 years, Allseas has developed cutting-edge technology and has moved boundaries. By continuously growing our know-how and expertise, we have developed into a world-leading offshore contractor.

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Allseas tax strategy

At Allseas, we are committed to high standards of ethics and integrity in all aspects of our business, and to ensuring our activities are conducted in accordance with applicable laws and regulations.

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Contact Allseas’ Corporate Communications department for images and information about our company and vessels.

For inquiries regarding offshore installation or decommissioning projects, contact our Sales and Marketing department.