A.P. Møller – Mærsk A / S is a Danish company specializing in sea freight and port terminal services, as well as logistics and energy. The headquarters is located in Copenhagen, and subsidiaries and offices with more than 80 thousand employees are located in more than 135 countries of the world. For 2018, Maersk is the world leader in container shipping with a market share of 18%. The company 2019 annual revenue was US $ 39 billion.