The Xikomba subsea system comprised four production wells, four water-injection wells and one gas-injection well. Two 10-inch production risers, two 8-inch water-injection risers, one 8-inch gas-injection riser and three control umbilicals entered the turret; provision was included for an additional umbilical. The turret’s fixed section carried the mooring lines and subsea connections, while bearings allowed the vessel to weathervane and a swivel stack transferred production, test, injection, utility and electrical services to the rotating hull. Sixteen topsides modules provided high-pressure and interstage separation, low-pressure separation, electrostatic crude treatment, gas dehydration, flash-gas compression, gas injection and gas lift, produced-water treatment, seawater treatment, water-injection pumping, chemical systems, test separation, fiscal metering and flare-gas knockout. Separated gas was compressed for subsea injection and gas lift, with part used as fuel. Produced water was degassed and settled before discharge. Injection seawater was lifted through submerged pumps, filtered and vacuum-deaerated before reservoir injection. Two dual-fuel turbine generators supplied topsides power. Export-quality crude was stored in twelve cargo tanks with approximately 1.7–1.8 million barrels of capacity and transferred through a floating stern hose to an offloading tanker. Marine utilities included steam, fresh water, firewater, foam and diesel systems. The accommodation housed up to 85 people and included central control and working spaces.