The four floating production, storage and offloading vessels operating in the Stabroek Block have become the backbone of Guyana’s offshore industry, each larger and more advanced than the last.
Together, Liza Destiny, Liza Unity, Prosperity and ONE GUYANA have pushed national output beyond 900,000 barrels per day, demonstrating how quickly ExxonMobil has scaled deep-water production in less than a decade. All four FPSOs were made by SBM Offshore.
Liza Destiny, the country’s first FPSO, began production at the end of 2019, moving Guyana from discovery to first oil in under five years. Built from a converted tanker, it was designed for 120,000 barrels per day (b/d), but later optimization increased its liquids capacity to more than 150,000 b/d. Its performance exceeded initial expectations and delivered production at a cost below the approved budget, setting a standard for project discipline across the block.
Liza Unity followed in early 2022, signalling Guyana’s advancement in standardized deep-water development. It was the first Stabroek FPSO built using a Fast4Ward® hull, with topsides designed for 220,000 b/d. Unity has consistently delivered above its nameplate capacity, reaching around 250,000 b/d at its peak. The vessel’s large gas-handling system and improved water-injection capacity reflected a move towards more efficient operations and stricter environmental controls.
Prosperity, the third FPSO, brought the Payara project online with a similar 220,000 b/d design and further refined standardized architecture. It is associated with an estimated 600 million barrels of recoverable resources and was engineered to ramp up much faster than earlier projects. The vessel includes upgraded power systems, enhanced separation technology and increased water-injection capacity, assisting with better reservoir management as Payara approaches full production.
ONE GUYANA, the newest and largest unit, began producing in August 2025 and represents the most advanced phase of development to date. Designed for 250,000 b/d, it features 450 million cubic feet per day of gas-treatment capacity, 300,000 b/d of water injection and storage for around two million barrels of crude. It was delivered months ahead of schedule for the Yellowtail project, Guyana’s largest investment to date. The FPSO’s debottlenecking potential and efficient processing systems position it as the top performer in the fleet.
Across the four projects, production capacity has surged from 120,000 barrels per day to over 900,000 b/d. Each FPSO benefits from lessons learned from its predecessor. The vessels now form a streamlined sequence of deep-water facilities that continue to enhance Guyana’s role in the global energy sector and serve as a blueprint for future developments planned in the Stabroek Block.
