Large naval vessels and submarines continue to be operated with steam turbines, using nuclear reactors to boil the water.
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The steamboat era finally ended in the 20th century, largely due to the railroad. Although steamboats ruled trade and travel in the 1800s and early 1900s, newer and cheaper forms of transportation eventually replaced them.
Titanic propulsion was supplied by three main engines—two reciprocating four-cylinder, triple-expansion steam engines and one centrally placed low-pressure Parsons turbine—each driving a propeller. The two reciprocating engines had a combined output of 30,000 horsepower (22,000 kW).
The prices of tickets on the Titanic in 1912 ranged from £870 or $4,350 for a first-class parlor suite to a maximum of £8 or $40 for a third-class passage, according to The Washington Times. A century later, in 2012, those ticket prices equaled a range of $50,000 to $460.