Ocean liner
In the second half of the 20th century, ocean liners have been replaced by aircraft more and more. In the 1950’s, as airplanes like the De Havilland Comet and Boeing 707 were built, ocean liners seemed redundant as jet liners were faster and easier to build than ocean liners. By the 1980’s, most ocean liners had been retired with only a few outliers staying in service.