The Mariner offshore field lies at water depths ranging between 97m and 112m. It is located approximately 130km off the British coast and 40km northwest from the UK / Norway international boundary. It is scheduled to be produced with the help of 50 wells and 92 sidetracks that will all be tied-back to a production, drilling and quarters (PDQ) unit secured on a fixed steel jacket platform. The PDQ unit in turn will be tied-back to a floating storage and offloading unit (FPU). The platform will first separate gas and water from the produced oil. The stabilized oil will then be piped to the FSU vessel for storage. From there, it will be shipped to the shore through shuttle tankers.