John Fredriksen is a Norwegian-born oil tanker and shipping magnate, who owns the world's largest oil tanker fleet. He also has major interests in the offshore driller Seadrill, the fish farming company Marine Harvest, the dry bulk company Golden Ocean Group, and the supply vessel company Deep Sea Supply. Through his investment companies Hemen Holdings and Meisha, Fredriksen controls the companies Frontline and Golar LNG. In 2010–2011, Frontline owned 9.6 percent of another large tanker company, Overseas Shipholding Group. North Atlantic Drilling, Sevan Drilling, and Asia Offshore Drilling are partly owned by Seadrill.