Limited recourse lending was used to finance maritime voyages in ancient Greece and Rome. Its use in infrastructure projects dates to the development of the Panama Canal, and was widespread in the US oil and gas industry during the early 20th century. However, project finance for high-risk infrastructure schemes originated with the development of the North Sea oil fields in the 1970s and 1980s. Such projects were previously accomplished through utility or government bond issuances, or other traditional corporate finance structures.