Semco Maritime A/S is a Danish engineering and contracting company headquartered in Esbjerg, serving the energy sector with a focus on offshore wind and offshore oil and gas. The company delivers design, engineering, procurement, construction, installation, commissioning, and service for energy infrastructure, including high-voltage electrical systems, offshore substations, grid connections, SCADA and telecoms, fire and safety systems, and HVAC.
Semco Maritime supports the full lifecycle of assets—from newbuilds to modifications, life extension, and decommissioning—covering offshore platforms, drilling rigs, and renewable energy balance-of-plant. The company is active in the North Sea and other international markets and also contributes to emerging power-to-X and hydrogen projects through electrical integration and safety-critical solutions.