Siem Offshore Contractors
Our history
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Our History

Since 1996, the founders of Siem Offshore Contractors have been innovators in the submarine cable and subsea umbilical installation, repair and maintenance market. In 2003 the original company was formed to bring a new approach to the market.

We began with servicing the demanding worldwide offshore oil and gas industry, meeting the highest industry standards for quality, health, safety and environmental protection; then in March 2011, we became a wholly owned subsidiary of Siem Offshore a Norwegian stock-listed company (SIOFF), and were rebranded Siem Offshore Contractors. This gave us instant access to a large fleet of in-house vessels and resources to service our client’s needs.

Subsequently we developed the leading offshore wind farm cable installation vessel solution ‘Siem Duo’ consisting of the Cable Lay Vessel Siem Aimery assisted by the Installation Support Vessel Siem Moxie and began focussing on the offshore wind market.

Since then we have also expanded into providing stand-alone ‘Walk to Work’ or Service Operations Vessels for both construction and maintenance support for offshore wind farms, and have a fleet of vessels equipped with active motion compensated gangways in operation around the globe.