Editing Yacht (section)

==== Internal combustion ====
[[Nicolaus Otto]] and [[Gottlieb Daimler]] developed practical [[Four-stroke engine|four-stroke]] gasoline engines, starting in 1876. Beginning in 1898 engines increased in horsepower from {{Convert|25|hp|kW|abbr=}} to {{Convert|500|bhp|kW|abbr=}} by 1906. Some were destined for [[Motorboat|speedboats]], other for motor yachts.<ref name="rudder">{{Cite book|last=Day|first=Thomas Fleming|url=https://books.google.com/books?id=nsU6AAAAMAAJ|title=The Rudder|date=1916|publisher=Fawcett Publications|pages=299–303|language=en}}</ref> [[Diesel engine|Diesel power plants]] for boats were demonstrated in 1903.<ref>{{Cite book|last=Sass|first=Friedrich|title=Geschichte des deutschen Verbrennungsmotorenbaus von 1860 bis 1918|publisher=Springer|year=1962|isbn=978-3-662-11843-6|location=Berlin/Heidelberg|pages=532|language=De}}</ref> Diesels became a more prevalent type of power plant in the 20th century thanks to their low cost of operation and reliability.<ref name="rudder" />