As home to supermajors, as well as a plethora of smaller, independent energy players, the US boasts one of the largest concentrations of energy personnel in the world. With its insatiable appetite for energy resources, the United States is the world's single largest consumer of oil, using as much as 20.73 million barrels per day as of 2008. Recently, interest has peaked in the vast quantity of untapped natural gas resources in the US, the reserves of which were inventoried in 2008 at 238 Tcf, with producers specifically targeting the nation's promising shale formations for this energy commodity.
Marine engineering involves the design, development, operation and maintenance of the propulsion, powering and mechanization aspects of a ship or other marine vessels. They specialize in the anchoring, steering, cargo handling, hvac, communications and electrical power generation equipment onboard. Marine engineers in the oil and gas industry may also focus on fixed marine structures, such as oil rigs, platforms, or offshore windfarms.