We are a major contractor in the global offshore energy industry, leading the way in subsea pipeline construction and transport, installation and removal of offshore facilities. Pioneers in heart and soul, we integrate cutting-edge innovation with engineering excellence to meet the market’s ever-changing needs. Through our commitment to facilitate the energy transition through sustainable, technology-driven solutions, we are securing the future.

More about us

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Engineers on board Allseas' vessel Hidden Gem
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Freedom to thrive

We give each other the freedom to thrive. To develop ourselves, to have fun and be proud of what we achieve together.

Sail our own course

We dare to take risks and invest in ideas we believe in. To deliver sustainable solutions for people and the environment we work in.

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Continue to improve

We build on our successes and continue to improve, refine and develop new applications.

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Deliver on promises

We maintain our reputation by doing what we say and delivering what we promise.

Our projects worldwide

With over 300 projects and 28,000 kilometers of subsea pipeline installed globally, we set new standards in deepwater installation, pipelay, and heavy lift. Our advanced vessels deliver excellence in complex project execution, from installation to removal and transport.

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What we do

Allseas is a global contractor in the offshore energy market, specialising in pipelay, subsea construction, platform transport, installation and removal, and polymetallic nodule collection.

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Offshore pipelay

Natural gas, oil, carbon capture and water.

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Platform decommissioning

Single-lift removal of the heaviest offshore facilities.

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Platform transportation and installation

A unique solution for the largest, heaviest offshore structures.

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Polymetallic nodule collection

Responsibly recover polymetallic nodules from the ocean floor.

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News
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Oceanic kicked off offshore works for the Porthos project

Oceanic kicked off offshore works for the Porthos project

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Sandpiper completes Darwin Pipeline Duplication scope

Sandpiper completes Santos' Darwin Pipeline Duplication scope

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Audacia laying pipe

Allseas expands in Brazil with Búzios-10

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