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One of the largest and most difficult engineering projects ever undertaken, the canal had an enormous impact on shipping between the two oceans, replacing the long and treacherous route via either the Strait of Magellan or Cape Horn at the southernmost tip of South America. A ship sailing from New York to San Francisco via the canal travels 9500 km (5903 mi), well under half the 22500 km (13980.9 mi) route around Cape Horn. The concept of a canal in Panama dates to the early 16th century. The first attempt to construct a canal began in 1880 under French leadership, but was abandoned after 21,900 workers died, largely from disease (particularly malaria and yellow fever) and landslides. The United States launched a second effort, incurring a further 5,600 deaths but succeeding in opening the canal in 1914. The U.S. controlled the canal and the Canal Zone surrounding it until the 1977 Torrijos � Carter Treaties provided for the transition of control to Panama. From 1979 to 1999 the canal was under joint U.S. � Panamanian administration, and from 31 December 1999 command of the waterway was assumed by the Panama Canal Authority, an agency of the Panamanian government. While the Pacific Ocean is west of the isthmus and the Atlantic to the east, the 8- to 10-hour journey through the canal from the Pacific to the Atlantic is one from southeast to northwest. This is a result of the isthmus's "curving back on itself" in the region of the canal. The Bridge of the Americas ( ) at the Pacific end is about a third of a degree of longitude east of the end near Colon on the Atlantic. The maximum size of vessel that can use the canal is known as Panamax. A Panamax cargo ship typically has a DWT of 65,000-80,000 tonnes, but its actual cargo is restricted to about 52,500 tonnes because of draft restrictions in the canal. The longest ship ever to transit was the San Juan Prospector, now Marcona Prospector, an ore-bulk-oil carrier that is 973 ft (296.6 m) long, with a beam of 106 ft (32.3 m). |