A.P. Møller – Mærsk A/S, also known simply as Maersk, is a Danish integrated shipping company, active in ocean and inland freight transportation and associated services, such as supply chain management and port operation. Maersk has been the largest container shipping line and vessel operator in the world since 1996. The company is based in Copenhagen, Denmark, with subsidiaries and offices across 130 countries and around 83,000 employees worldwide in 2020.