PTSC AP is a joint venture between PetroVietnam Technical Services Corp and Yinson Production.
The $416 million contract, which includes maintenance of the vessel, has a firm period of 10 years, extendable by up to five years.
Murphy has specified a newbuild double-hull vessel with a storage capacity of about 500,000 bbl, dual-fuel systems and low-carbon emissions.
Following the two-year construction period, the vessel should start operations in fourth-quarter 2026.
Via PTSC AP and another joint venture, Yinson Production and PTSC also operate the FSO PTSC Bien Dong 01 and the FPSO PTSC Lam Son offshore Vietnam.