The initial East Hub scheme comprised nine subsea wells - five producers and four water injectors - in water depths of about 450–550 metres. Production and injection trees connect through manifolds, pipeline systems, risers and umbilicals to the FPSO. Subsequent documented tie-backs expanded the connected system: Cuica added one producer and one water injector through the Cabaça North subsea system, while a 2021 project description recorded twelve wells and five manifolds feeding Olombendo before Cabaça North start-up. The external turret accommodates eighteen risers and umbilicals and transfers produced fluids, injection services, utilities and controls. Installed topsides modules include an inlet manifold, production separation, oil stabilisation, produced-water treatment, injection-water facilities, medium- and high-pressure gas-reinjection compression, scrubber and cooler equipment, methanol injection, utilities, flare tower and flare knockout drum. The plant can treat and inject produced water or seawater for pressure maintenance and condition associated gas for reinjection. Main electrical power is supplied by three 21-megawatt dual-fuel turbine generators; essential diesel generation is separately installed. The converted 302,000-deadweight-tonne hull is approximately 382 metres long and 58 metres wide, with about 1.7 million barrels of oil storage. Supporting systems include a central control room, upgraded instrumentation and controls, deck cranes, helideck and accommodation. Treated crude is stored onboard and transferred to shuttle tankers.