vessels The FPSO operating in the deepest waters is the FPSO BW Pioneer, built and operated by BW Offshore on behalf of Petrobras Americas INC. The FPSO is moored at a depth of 2,600 m in Block 249 Walker Ridge in the US Gulf of Mexico and is rated for . The EPCI contract was awarded in October 2007 and production started in early 2012. The FPSO conversion was carried out at MMHE Shipyard Pasir Gudang in Malaysia, while the topsides were fabricated in modules at various international vendor locations. The FPSO has a disconnectable turret (APL) The vessel can disconnect in advance of hurricanes and reconnect with minimal down time. A contract for an FPSO to operate in even deeper waters (2,900 m) for Shell's Stones field in the US Gulf of Mexico was awarded to SBM Offshore in July 2013. One of the world's largest FPSO is the Kizomba A, with a storage capacity of . Built at a cost of over US$ 800 million by Hyundai Heavy Industries in Ulsan, Korea, it is operated by Esso Exploration Angola (ExxonMobil). Located in 1200 meters (3,940 ft) of water at Deep water block 200 statute miles (320 km) offshore from Angola, Central Africa in the Atlantic Ocean, it weighs 81,000 tonnes and is 285 meters long, 63 meters wide, and 32 meters high (935 ft by 207 ft by 105 ft). The first FSO in the Gulf of Mexico, The FSO Ta'Kuntah, has been in operation since August 1998. The FSO, owned and operated by MODEC, is under a service agreement with PEMEX Exploration and Production. The vessel was installed as part of the Cantarell Field Development. The field is located in the Bay of Campeche, offshore Mexico's Yucatán peninsula. It is a converted ULCC tanker with a SOFEC external turret mooring system, two flexible risers connected in a lazy-S configuration between the turret and a pipeline end manifold (PLEM) on the seabed, and an offloading system that allows up to two tankers at a time to moor and load, in tandem or side by side. The FSO is designed to handle with no allowance for downtime. The Skarv FPSO, developed and engineered by Aker Solutions for BP Norge, is one of the most advanced and largest FPSO deployed in the Norwegian Sea, offshore Mid Norway. Skarv is a gas condensate and oil field development. The development ties in