Ana Chaves Bay (Portuguese: Baia Ana Charves) is the harbour and port to the capital city of São Tomé in São Tomé and Príncipe. In 2011, the government of São Tomé and Príncipe granted a long-term concession to Angolan state oil company Sonangol to control and develop the port in which Sonangol have been reported to have invested US$30 million in developing a free trade zone.[1]