NSO

Markhus AS, a distinguished Norwegian offshore and maritime engineering firm headquartered in Grimstad and established in 1984, is a proud pillar of the NSO brand—enhancing our collective engineering prowess with over 40 years of expertise. The company excels in architectural and structural engineering, project management, and turnkey interior solutions designed specifically for offshore installations in the North Sea’s rigorous safety environments.

together, we deliver comprehensive end-to-end project management by integrating multidisciplinary engineering services. With strong partnerships among major offshore industry clients and a robust network of certified subcontractors, we continue to drive innovation. A prime example of this innovation is the Flexmodule A/S system—a lightweight, prefabricated modular solution engineered for rapid deployment. Engineered for weight-sensitive offshore conditions, these lightweight modules are deployed across accommodation units, control rooms, and technical facilities, enabling rapid platform expansion with minimal impact on structural integrity