Subsea 7 S.A. is a Luxembourgish multinational services company involved in subsea engineering and construction serving the offshore energy industry. The company is registered in Luxembourg with its headquarters in London. Subsea 7 delivers offshore projects and provides services for the energy industry. Subsea7 makes offshore energy transition feasible through working on lower-carbon oil and gas and by providing services for the growth of renewables and other emerging energy industries. Wikipedia