The image to the right shows an animation of a triple-expansion engine.

Coal to power the triple-expansion steam engines continued to be delivered by water until around 1928.

For other uses, the increased capital cost of a triple-expansion engine was not so commonly worthwhile.

This was 1800 hp triple-expansion four-cylinder engine built in 1906.

Until the middle of the 20th century flatirons were built with triple-expansion steam engines.

She had triple-expansion steam engines which drove her at a rather modest 18 knots.

"You wouldn't know anything about triple-expansion marine engines, would you?"

Power was supplied by two triple-expansion engines, each one driving a separate propeller.

The 1903-4 design also retained traditional triple-expansion steam engines.

She was the first battleship to be propelled by triple-expansion steam engines.