Allseas has executed more than 300 projects and installed over 26,500 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

Ninian North

Removal, transfer and disposal of 12,500 t topsides and partial jacket from UK continental shelf

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Brent Alpha

Single-lift removal of the Bravo Alpha topsides – the third of Shell UK’s four Brent field platforms – and delivery to UK recycling yard

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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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Vlaamse Waterweg

Collection system to prevent plastic entering a weir in Evergem, in the Belgian province of East Flanders.

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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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A study for Hoogheemraadschap van Delfland to investigate plastic pollution in the Verversingskanaal in Scheveningen.

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Project history