Reception Dina IMG_02662

General enquiries
Tel. +45 7916 6666


Semco Maritime
Esbjerg Brygge 30
DK- 6700 Esbjerg

Safeguarding People and Assets

Service and maintenance

Efficient planning and multi-skilled service technicians.

We are all you need to secure maximum uptime and lowest maintenance cost.

More than 55 offshore wind farms serviced

Since the start of our renewables adventure in 2002, Semco Maritime has been Safeguarding People and Assets by providing a variety of wholesome O&M packages covering ad hoc, critical, regulatory and asset monitoring services.

Over the years of servicing more than 55 different offshore wind transmission assets, we have gathered a complete set of skills, experiences and supply chain, making us a market leader in providing turnkey O&M solutions.

Our innovative and sustainable O&M solutions are setting new standards in driving high availability levels for power transmission assets. Our service packages are customized to the specific needs of our customers and the individual site. Our measure of success is asset availability and people safety.

Discover our how we can help you Safeguard your People and Assets by clicking the interactive tour button or visit the topics below.

Customised service setup

General survey

  • General survey of your asset: Wind farm substations or transition pieces

  • Assessment of the technical conditions of your assets

  • Development of customized service level agreement based on your needs and the findings of the survey

  • Ensuring maximum uptime and lower service costs

Complex service made easy

You can choose from ad hoc service to full scope asset life time service agreement.
We guarantee maximum uptime and low O&M costs.

Wind farm substations and transition pieces

Your one-stop service provider for customised solutions for operation, service and maintenance of your wind farm assets.

Certified technicians and maintenance schedules

All our service technicians are qualified to perform offshore service and maintenance.

Data collection and documentation

We control all service activities in real-time, provide daily, weekly or monthly reports and gather service data automatically in the system.

Service level agreements

You just choose the agreement that suits your operation best and we take care of everything else.

Case: Northland Power

Deutsche Bucht 5-year service contract

Construction supervision and commissioning of the offshore substation for the Deutsche Bucht wind farm in the Dutch North Sea. The scope also includes inspection feedback, creation of punch lists as well as hot and cold commissioning assistance during the offshore hook-up phase and maintenance from June-August 2019.
Case: Innogy

Nordsee One 5-year service agreement

Five-year service contract (2016-2021) covering service and maintenance of all systems on the Nordsee One offshore substation and transition pieces in the German North Sea. The project covers both scheduled and unscheduled service. The service team is available 24/7/365 for maintenance and troubleshooting.

Case: Energinet

Installations assistance on Kriegers Flak A&B

Provision of offshore supervision for safe and efficient installation of all high voltage sea cables during the construction phase. The job scope during the installation phase (2018-2019) included management of scaffolding, supply of scaffolding equipment, cable pulling and supply of manpower and took place in Rotterdam and offshore.

Case: Ørsted

Bucket welding for Borkum Riffgrund 2

The scope of work included assembly and welding of 20 suction bucket jackets. Parts produced in Poland, but assembled and welded in Cuxhaven, Germany  prior to offshore installation in 2018.

Wherever you are in the world, we have technicians ready to serve you ...

John Dicom

Operation, service and maintenance
+45 7916 6727

Semco Maritime A/S
Esbjerg Brygge 30
6700 Esbjerg

Head office
Esbjerg, Denmark
+45 7916 6666

Semco Maritime A/S
Esbjerg Brygge 30
6700 Esbjerg

CVR no. DK 2549 0762

REX-no. DKREX170591191
EORI no. DK25490762