FPSO (Floating Production Storage and Offloading)
FSO (Floating Storage and Offloading)


FPSO and FSO systems are the primary method for many offshore oil and gas producing regions around the world.

Most FPSOs/FSOs are ship-shaped and can be secured to the seabed via a variety of mooring systems, the choice of which is determined by the specific environment. They are suitable for a wide range of water depth, environmental conditions and can be designed with the capability of staying on location for continuous operations for 20 years or longer.

An FPSO is a floating production system that receives fluids (crude oil, water and a host of other things) from a subsea reservoir through risers, which then separate fluids into crude oil, natural gas, water and impurities within the topsides production facilities onboard. Crude oil stored in the storage tanks of the FPSO is offloaded onto shuttle tankers to go to market or for further refining onshore.

MODEC Corporate Movie - FPSO/FSO (07:13)


The hull of an FPSO may be newly built (New-Build) or may be converted from existing tankers (Conversion). Once the development of an oil field is complete, the FPSO can be relocated to another oil field and reused, in which case it will be modified (Modification) to meet the conditions of the new oil field. In either case, it is the only system in the world that is designed and built according to the sea conditions, installation requirements, production volume, production period, etc. and is made to order specifically for the development of each oil field.


As the nature of oil and gas extracted and oceanographic conditions, such as the depth of water, waves, wind and currents, all vary depending on where the offshore oil and gas fields are located, FPSOs must meet specifications that are tailored to the particular conditions, and the specifications required by our customers who are oil companies are also diverse. With the aim of realizing our most important goal of maximizing the life cycle value that we provide to our stakeholders, including our customers, over a long term of more than 20 years from the start to the end of the operation of each FPSO, we have developed two types of new-build hulls for next-generation FPSOs, utilizing the design/construction technology we have cultivated as a leading company in the FPSO industry as well as our abundant experience in providing operation and maintenance services. We have introduced these new types of hulls into our ongoing projects.


Ever since we carried out the construction (conversion) of an FPSO for the first time in 1985, we have converted a number of oil tankers into FPSOs/FSOs. We have built strong relationships with major shipyards around the world, and many of the FPSOs we built, including the FPSO Kakap Natuna, which began its production in 1986, continue to carry out production activities today.

FPSO hull before mounting mooring equipment and production systems
FPSO with mooring equipment and production systems mounted on the hull