Construction and installation

With our integrated approach N-Sea is your ideal partner in offshore construction and installation services.

N-Sea meet the needs of your industry. We provide a broad range of general and specialist support services to assist you in your construction and installation project.

All-round subsea contractor

Over several decades, N-Sea has proven to be a trustworthy all-round subsea contractor for offshore and subsea operations. During the development of the offshore oil and gas industry on the Dutch Continental Shelf, we participated in many projects and as of 1968 firmly established itself ourselves as a major subsea contractor. 

To get the job done well, we combine our subsea services to meet the needs of our client.

Offshore renewable energy

The growing demand for renewable energy has resulted in the expansion of offshore wind farms and tidal turbines. We have a proven track record in renewable energy projects having provided many offshore wind farms with survey, construction and installation services.


  • subsea construction and installation
  • pre-installation survey and inspection
  • decommissioning and abandonment
  • excavation services
  • remediation and stabilisation services.
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