Petrobras 36 (P-36) was at the time the largest floating semi-submersible oil platform in the world prior to its sinking on 20 March 2001. It was owned by Petrobras, a semi-public Brazilian oil company headquartered in Rio de Janeiro. The cost of the platform was US$350 million (currently US$459 million).
The vessel was built at the Fincantieri shipyard in Genoa, Italy in 1995 as a drilling rig. She was owned then by Società Armamento Navi Appoggio S.p.A. The 33,000 tonnes (36,000 short tons) rig was converted in Canada to the world's largest oil production platform.
P-36 was operating for Petrobras on the Roncador Oil Field, 130 kilometres (80 mi) off the Brazilian coast, producing about 84,000 barrels (13,400 m3) of crude per day.
P-36 was replaced by FPSO-Brasil which is a leased vessel from SBM Offshore. The FPSO-Brasil started its lease contract with Petrobras in December 2002.
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