Kosmos opened a significant new hydrocarbon province when it discovered a large accumulation of natural gas offshore Mauritania and Senegal in 2015.

Located on the maritime border between Mauritania and Senegal, in water depths of up to 2,850m, Kosmos and its partners are developing the Greater Tortue Ahmeyim (GTA) gas field through an innovative liquified natural gas project.

Phase 1, which is now in production, has been designed to produce gas from a deepwater subsea system to a mid-water floating production, storage and offloading vessel (FPSO), which processes the gas to make it liquefaction ready, and sends the gas through a pipeline to a floating liquefied natural gas (FLNG) facility. The FLNG facility is protected behind a nearshore hub (which serves as a breakwater and LNG terminal) and is located on the Mauritania and Senegal maritime border. The FLNG facility for Phase 1 is designed to produce at a nameplate capacity of approximately 2.7 million tons per annum.

The project provides LNG for global export and is also planned to make gas available for domestic use in both Mauritania and Senegal.

First gas production from the subsea system was achieved on December 31, 2024. First LNG was achieved in February 2025 and the first gross LNG cargo was successfully exported in April 2025.

The GTA project was granted the status of National Project of Strategic Importance by the Presidents of Mauritania and Senegal. This important recognition shows the commitment of the host governments and the importance of the project to both countries.