John Fredriksen is a Norwegian-born Cypriot oil tanker and shipping billionaire businessman based in London. He owns the world's largest oil tanker fleet and has major interests in the offshore driller Seadrill, the fish farming company Mowi, 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.