A transatlantic tunnel is a theoretical tunnel that would span the Atlantic Ocean between North America and Europe possibly for such purposes as mass transit. Some proposals envision technologically advanced trains reaching speeds of 300 to 5,000 miles per hour (500 to 8,000 km/h). Most conceptions of the tunnel envision it between the United States and the United Kingdom ‒ or more specifically between New York City and London.
Proposed tunnels
Many variations of the concept exist, including a tube above the seabed, a tunnel beneath the ocean floor, or some combination of the two.
Vactrain
A 1960s proposal has a 3,100-mile (5,000 km) near-vacuum tube with vactrains, a theoretical type of maglev train, which could travel at speeds up to 5,000 miles per hour (8,000 km/h). At this speed, the travel-time between New York City and London would be less than one hour. Another modern variation, intended to reduce costs, is a submerged floating tunnel about 160 feet (50 m) below the ocean surface, in order to avoid ships, bad weather, and the high...
Daphne Preston-Kendal
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