Siem Offshore Contractors GmbH
Our ships. Our people. Our vision. Your solution.
Siem Offshore Contractors is a leader in submarine cable installation, repair and maintenance serving the global offshore renewable energy and oil and gas sectors as well as utility markets since 2003...
Jill Falenschek, Tender Coordinator
+49 (0)491 91 243 0
Siem Offshore Contractors is a leader in submarine cable installation, repair and maintenance serving the global offshore renewable energy and oil and gas sectors as well as utility markets since 2003. We specialise in the installation of submarine cables in harsh environments and are also a leader in the use of ‘Walk-to-Work’ systems having transferred over 130,000 personnel. In addition, we offer subsea and topside infrastructure inspection, repair and maintenance services.
Siem Offshore Contractors is a leader in submarine cable installation, repair and maintenance serving the global offshore renewable energy and oil and gas sectors as well as utility markets since 2003. As part of the Siem Offshore Group since 2011, we are able to leverage direct access to an in-house fleet of more than 40 high-end offshore support and construction vessels to assist in our primary activities.
We offer more than two decades of in-house cable installation experience in combination with best practice and latest vessel technology to operate in harsh environments 24/7 minimising weather delays. The innovative ‘Siem Duo’ consisting of the cable lay Vessel Siem Aimery and installation support vessel Siem Moxie has already set the new standard in offshore renewable projects. We have installed and trenched over 1,000 kilometre of submarine cables and connected more than 300 wind turbines since 2011 in sea states of up to 3.50 metre significant wave height. The Siem Duo has been specifically designed and built to serve the demanding needs for safe and reliable offshore operations in rough seas.
Safety is our priority and we are leading the way with the use of ‘Walk-to-Work’ systems during submarine cable installation as well as inspection, repair and maintenance activities having transferred over 130,000 personnel using these systems to safely increase the operability during poor weather conditions. Our cable lay Vessel Siem Aimery has a sheltered cable laying deck and a sheltered trenching ROV hangar as well as internal craneage for handling equipment including cable protection systems to reduce manual handling.
Furthermore, we are leading the way with innovative subsea and topside inspection, repair and maintenance services based on our in-house fleet of vessels with a focus on Balance of Plant. We also offer secure spare/replacement cable storage, handling and management to selected clients, supported by our marine logistics centre team located in Eemshaven, NL.
Subsea 7 has completed the acquisition of Siem Offshore Contractors (SOC) and cable lay vessel Siem Aimery and support vessel Siem Moxie. Following the completion, SOC's results will be reported within Subsea 7's Renewables and Heavy Lifting business unit. Subsea 7 and Siem Offshore Group signed an agreement for the acquis..read more →
Subsea 7 has signed an agreement to acquire the entire share capital of Siem Offshore Contractors (SOC), as well as cable lay vessel Siem Aimery and support vessel Siem Moxie, subject to competition clearance in Germany. The initial consideration is agreed to be EUR 140 million, split between 90 million for the vessels and 5..read more →
Siemens Gamesa: 8MW Offshore Wind Turbine to Be Market-Ready in 2020 Siemens Gamesa has launched a new offshore wind turbine â SG 8.0-167 DD â said to increase the annual energy production (AEP) compared to the 7MW model by 20%. Seawindâs Two-Bladed Turbines to Power Greek Islands Seawind has signed an agreement w..read more →
Siem Offshore has terminated discussions regarding a potential sale of Siem Offshore Contractors GmbH (SOC), a specialist in submarine cable installation, repair and maintenance. The discussions were held with Subsea 7 SA due to the strategic fit between Subsea 7's renewables business and SOC's cable business, Siem Offshore ..read more →
Siem Offshore is in talks with a potential buyer of Siem Offshore Contractors (SOC), as the parent company is considering strategic alternatives for its cable lay business amid preparation for an extended downturn in the offshore supply market. "The outcome of these negotiations is not yet known and there is no certainty tha..read more →
Siem Offshore Contractors' (SOC) accommodation and personnel transfer vessel Siem Moxie has been chartered by DEME Group's company Tideway for the inner-array cable installation works at the Rentel offshore wind farm. According to SOC, its walk-to-work installation support vessel has already begun work under the contract, sup..read more →