| 21. | The Nomad compound engine achieved a specific fuel consumption of 0.345 lbs per horsepower-hour.
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| 22. | Compound engines could be configured to either increase a ship's economy or its speed.
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| 23. | This final specimen was built in 1928, and was a 450 hp cross-compound engine.
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| 24. | The new White Star record-breakers were especially economical because of their use of compound engines.
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| 25. | The ship was powered by a single horizontal compound engine which drove one screw propeller.
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| 26. | The steam engine was designed as a twin-cylinder compound engine with interior Allan valve gear.
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| 27. | It was altered in 1921 and became a 1500 hp vertical three cylinder compound engine.
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| 28. | The Naiad was also used, in adapted form, in the Napier Nomad turbo-compound engine design.
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| 29. | May No 2 was driven by a 1500hp cross compound engine by Ashton Frost, 1901.
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| 30. | May No 1 was driven by 800 hp cross compound engine by B Goodfellow, 1892.
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