What we do

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.

What we do
Activities

From offshore pipelaying to installing and removing offshore structures, Allseas excels in the design and execution of large and complex offshore projects worldwide. Activities include design, engineering, procurement, fabrication and project management.

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Offshore pipelay

Natural gas, oil and carbon capture.

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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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Nuclear

Powering energy-intensive offshore vessels and onshore industry

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Our projects worldwide
Audacia first PLET for Barossa GEP

Atapu-2

Engineering, procurement, construction and installation (EPCI) of a riser-based subsea system for the ultra-deepwater Ataptu-2 pre-salt field development offshore Rio de Janeiro. 

Audacia
Gippsland platforms

Gippsland EPR

Major decommissioning job involving removal and transport to shore of 10 platforms within Australia's Gippsland Basin with combined weight of more than 48,000 tonnes.

Pioneering Spirit
Fortitude
Trunkline installation by Solitaire

YongAn and TungHsiao (YT2)

Installation of a 232-kilometre, 36-inch natural gas pipeline connecting YongAn and TungHsiao, strengthening Taiwan’s gas transmission capacity, resilience and long-term energy security.

Solitaire
Sandpiper
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Filter projects by activities
Offshore pipelay
Platform decommissioning
Platform transportation and installation

See all projects

Filter projects by activities
Offshore pipelay
,
Platform decommissioning
,
Platform transportation and installation

See all projects