McDermott International, Inc., through its subsidiaries, operates as an engineering and construction company worldwide. The company operates in three segments: Offshore Oil and Gas Construction, Government Operations, and Power Generation Systems.

The Offshore Oil and Gas Construction segment engages in the front-end design and detailed engineering, fabrication, and installation of offshore drilling and production facilities; and installation of marine pipelines and subsea production systems. It also provides project management and procurement services. Our operations in this segment are primarily conducted through our subsidiary, J. Ray McDermott, S.A.

The Government Operations segment supplies nuclear components, fuels, and assemblies to the U.S. Government, as well as provides various services, including uranium processing, environmental site restoration services, and management and operating services for various U.S. Government-owned facilities primarily within the nuclear weapons complex of the U.S. Department of Energy. This segment's activities are primarily conducted through our subsidiaries, Babcock & Wilcox Nuclear Operations Group, Inc. and Babcock & Wilcox Technical Services Group, Inc.

The Power Generation Systems segment provides fossil fuel-fired steam generating systems, large replacement commercial nuclear steam generators and components, and environmental equipment and components, as well as related services. It designs, engineers, manufactures, constructs, and services utility and industrial power generation systems, including boilers used to generate steam in electric power plants, pulp and paper making, chemical and process applications, and other industrial uses. McDermott's operations in this segment are performed by our subsidiaries, Babcock & Wilcox Power Generation Group, Inc. and Babcock & Wilcox Nuclear Power Generation Group, Inc.

McDermott operates in 23 countries and has over 20,000 employees.