The Emerald Producer was a Floating Production Facility (FPF). The rig was previously an Aker H-3 twin hull self propelled semi submersible drilling rig known as the Ali Baba and was converted to produce over 50,000 barrels of oil per day and designed to withstand 100 year storm conditions. In the summer of 1992 the Emerald Producer was installed in the Emerald Field which is located in Block 2/15a, some 200 miles northeast of Aberdeen and 75 miles northeast of Lerwick in the East Shetland Basin, at a water depth of 150 meters in the Northern North Sea.