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.

Pipelay

Offshore pipelay

Natural gas, oil and carbon capture.

Decommissioning

Platform decommissioning

Single-lift removal of the heaviest offshore facilities.

Transport and installation

Platform transportation and installation

A unique solution for the largest, heaviest offshore structures.

Polymetallic nodules

Polymetallic nodule collection

Responsibly recover polymetallic nodules from the ocean floor.

Nuclear

Powering energy-intensive offshore vessels and onshore industry

columns-3x

Our projects worldwide

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.

2029