Allseas has executed more than 300 projects and installed over 26,000 km of subsea pipeline worldwide. Project scopes range from straightforward pipeline installation jobs to complex pipelay and heavy lift contracts involving design, engineering, fabrication, installation and/or removal, large subcontracted scopes for diving, dredging, rock dumping, and systems to prevent plastic waste spreading into open water. Click on the world map to find out more about our current and challenging past projects.

Current projects

PRP 7.5 project

The construction of five new pipelines in the Champion North field, located 27 km off the northwest coast of Brunei in 25 m to 40 m water depth.

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Hollandse Kust (zuid) Alpha topsides

Pioneering Spirit  successfully installed the “Alpha” high-voltage convertor platform for the Hollandse Kust Zuid (HKZ) wind project in the North Sea, 20 km off the coast of The Hague.

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Golfinho LNG development

First job in southeast Africa comprises installation of three deep-water pipelines totalling some 88-km deep-water for the Golfinho LNG development offshore Mozambique.

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Catchy waste collection system

Rijkswaterstaat commissioned Allseas to develop a waste collection system named “Catchy” for the Vijfsluizer harbour, located between the cities Schiedam and Vlaardingen in the Netherlands

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Tyra Redevelopment

Single-lift removal of platform facilities weighing over 34,000 t from the North Sea’s Tyra field and delivery to recycling yards in Denmark and the Netherlands

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Port of Antwerp

Plastic collection system in Port of Antwerp’s “Doeldok” zone. The introduction of a passive catcher system will significantly reduce the quantity of pollutant plastics  found in the waters around Doeldok.

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Nieuwe Maas river

Plastic catcher for the Nieuwe Maas flowing through the city centre to remove macro plastics at the surface and in the water column.

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Project history