Semco Maritime

Semco Maritime is a Danish engineering and service company focused on the offshore energy and maritime sectors. Headquartered in Esbjerg on Denmark's west coast — the country's principal offshore hub — the company provides engineering, procurement, construction, installation, commissioning, operations and maintenance services to oil and gas operators, offshore wind developers and shipping companies. It is part of the privately held Semco Group, a Danish industrial holding that also spans other technical and industrial businesses. The company's business is organised around two broad pillars. The first is the offshore energy market, where Semco Maritime supports both traditional oil and gas installations — including rigs, platforms and floating production units — and the fast-growing offshore wind sector, where it provides substation design and construction, offshore installation support, and service and maintenance for wind farms. The second is the maritime market, where the company offers ship repair, conversion, newbuilding supervision and technical services, particularly in the offshore support vessel and specialised tonnage segments. Semco Maritime is known for its project-management and manpower capabilities: it supplies multidisciplinary teams of engineers and technicians to offshore projects worldwide, often working alongside major operators, EPC contractors and wind developers. Its service portfolio includes electrical and instrumentation work, mechanical and piping systems, HVAC, safety and automation, and integrated operations support. The company has expanded internationally, with activities and offices in Norway, the UK, the Netherlands, the United States, Brazil, Singapore and the Middle East, reflecting the global footprint of its offshore client base. Strategically, Semco Maritime has positioned itself at the intersection of the energy transition, using its oil and gas heritage to build a growing offshore wind and renewable-energy service business. It has been involved in offshore substation projects for wind farms in Northern Europe and in service contracts for offshore installations in the North Sea and beyond. The company markets itself on Danish offshore engineering standards, safety performance and long-term service relationships. As a private company within the Semco Group, Semco Maritime does not publish traded shares; its financial results are consolidated into the group. Its brand identity rests on being a reliable, technically deep partner for offshore operators navigating both conventional energy production and the shift toward renewables.

Semco Maritime traces its roots to the Danish industrial group Semco, which was built around engineering and contracting activities in Esbjerg, the centre of Denmark's North Sea oil and gas industry. The maritime and offshore service business grew out of the group's involvement in servicing offshore installations and ships operating out of Danish ports. Through the late 20th century, the company developed as a supplier of technical services, manpower and project management to oil and gas operators in the Danish and Norwegian sectors of the North Sea. Its base in Esbjerg gave it proximity to major offshore fields and to the port infrastructure supporting them, and it built long-standing relationships with operators and contractors active in the region. As the offshore wind industry emerged in Northern Europe from the 1990s onward, Semco Maritime extended its engineering and offshore installation expertise into renewable energy. It became involved in the design, fabrication and commissioning of offshore substations and in service work for wind farms, applying oil and gas standards of safety and reliability to the new sector. This diversification positioned the company as a participant in the energy transition rather than purely an oilfield services provider. In the maritime segment, the company built a ship repair and conversion business serving offshore support vessels, specialised ships and other tonnage, alongside technical newbuilding supervision. Its service yards and workshops, particularly around Esbjerg, became part of the regional maritime service cluster. Internationally, Semco Maritime expanded its footprint to follow clients into Norway, the UK, the Netherlands, the United States, Brazil, Singapore and the Middle East, offering engineering and manpower services on a global basis. The company has worked on offshore projects in the North Sea, the Baltic, Asia and the Americas. Semco Maritime remains part of the privately held Semco Group and continues to market itself as a Danish offshore and maritime specialist, with a strategy centred on combining conventional energy service capability with growing renewable-energy work.

• Semco Group's engineering and contracting activities established in Esbjerg, Denmark

• Expansion into offshore oil and gas technical services in the Danish and Norwegian North Sea

• Entry into offshore wind substation and service work as the Northern European wind industry developed

• International expansion into Norway, the UK, the Netherlands, the US, Brazil, Singapore and the Middle East

A Danish offshore engineering and service partner bridging oil and gas heritage with offshore wind and maritime technical services.

• Offshore substation EPC and commissioning

• Oil and gas modification and maintenance services

• Ship repair and conversion

• Offshore manpower and engineering services

1. 1Semco Maritime official websitesemcomaritime.com
2. 2HEA Energy acquires two jack-up vessels from Semco Maritimewindtech-international.com