RMS Titanic, the second and most famous of the three Olympic-class ships. She was slightly larger than her sister Olympic and slightly smaller than her sister Britannic. Nick-named "The Unsinkable Ship", she was built to cross the Atlantic at least 1200 times, yet she could not complete her maiden voyage. Although she could carry 3500 persons, she had 2220 on her because it was her first crossing. She was built by Harland & Wolff at Belfast, N. Ireland like her sisters. Her overall length was 882.5 feet, her beam was 92.5 feet and she was 60.5 feet from water line to boat deck. Like her sisters she was driven by three propellers that used two outboard reciprocating engines that drove the wing-propellers (Three bladed, 24 ft in diameter) with a turbine in the middle driving the center propeller (Four bladed, 16 ft in diameter). Each reciprocating engine developed 15,000 horsepower at 75 revolutions per minute (rpm). The turbine made about 16,000 horsepower at 165 rpm. The steam needed to run all this came from 29, three story high boilers. Each engine was four stories high.

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