The ONE GUYANA floating production, storage and offloading vessel (FPSO) has received the American Bureau of Shipping (ABS) SUSTAIN-1 notation, SBM Offshore announced earlier today.
The company stated, “FPSO ONE GUYANA has received the ABS SUSTAIN-1 notation, marking another step in embedding sustainability across FPSO design and operations.”
Designed, built and operated by SBM Offshore for ExxonMobil Guyana, the vessel is the second FPSO in Guyana to receive the SUSTAIN-1 notation, following Liza Unity. SBM Offshore said, “This achievement reflects our strong collaboration with ExxonMobil Guyana and American Bureau of Shipping (ABS) to integrate sustainability into FPSO design and operations.”
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The SUSTAIN-1 notation is issued by ABS to vessels and offshore assets that meet environmental and sustainability performance standards beyond regulatory requirements. It establishes structured environmental management and baseline performance as the entry tier in the ABS SUSTAIN series, which progresses to higher levels with stricter requirements.
ABS’s sustainability framework assesses pollution and waste, coastal and marine ecosystems, energy efficiency, performance monitoring, low-carbon fuels, human-centered design, and asset recycling.
Liza Unity was the first FPSO to receive both the SUSTAIN-1 and SUSTAIN-2 notations. It also received ABS’s REMOTE-CON notation.
The ONE GUYANA is SBM Offshore’s largest unit operating in the country. Built under the Fast4Ward® program, it uses a newbuild multi-purpose hull with standardized topsides.
The vessel was designed to produce an average of 250,000 barrels per day (b/d) of oil, but has since been optimized to produce up to 270,000 b/d. It can treat 450 million cubic feet of gas per day, inject 300,000 barrels of water per day, and store about two million barrels of crude.
The FPSO is spread-moored in water depths of about 1,800 meters.
ONE GUYANA supports the Yellowtail development in the Stabroek Block, located about 200 kilometers offshore Guyana. ExxonMobil Guyana operates the block with a 45% stake. Hess Corporation holds 30%, while CNOOC Limited holds 25%.
SBM Offshore said the vessel builds on the “excellent operational performance” of the three preceding FPSOs working in Guyana.


