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.
Pioneering Spirit will install the offshore substation for the Yeu and Noirmoutier islands’ offshore wind farm development off France’s Pays-de-la-Loire coast
Installation of a third deepwater gathering line for the Tamar field expansion project, which will meet growing demands for safe and reliable gas supply in the East Mediterranean.
Transport and single-lift installation of two 900-megawatt converter platforms for the DolWin4 and BorWin4 offshore grid connection projects in the German North Sea.
Engineering, preparation, removal and disposal of 13,000-tonne topsides in the UK North Sea.
Pipeline installation scope for one of the most important Dutch offshore natural gas developments in the last 15 years.
Transport and installation services for the UK’s Norfolk Offshore Wind Zone, one of the largest offshore wind developments in the world.
Single-lift removal and transport to shore for recycling of 31,000-tonne Charlie topsides, the fourth and final iconic Brent platform
Construction of near 700 km-long natural gas pipeline supplying southeast Mexico with reliable, affordable energy.
Major platform decommissioning job comprising four topsides and three steel jackets weighing combined ~115,000 tonnes
Removal of two 11,000 t disused gas production platforms and connected subsea infrastructure from the Irish Sea and transport to disposal yard in East Scotland for recycling.
Removal and disposal of multiple decommissioned platform facilities from the Valhall field, offshore Norway.
Allseas developed a waste removal system for the Waddenhaven on the island of Terschelling.
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.