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[[Berkas:20091109-TurboJET Barca.jpg|jmpl|Foilcat. Hydrofoil katamaran.]]
'''Hidrofoil''' adalah sebuah kapal dengan bagian seperti sayap yang dipasang pada penyangga di bawah lambung kapal. Ketika kapal meningkatkan kecepatannya, hidrofoil memproduksi [[gaya angkat]] sehingga lambungnya terangkat dan keluar dari air. Ini menyebabkan pengurangan [[gesekan]] dan oleh karena itu peningkatan dalam kecepatan.▼
[[Berkas:Hydrofoil types.svg|450px|jmpl|The two types of hydrofoils: surface-piercing and fully submerged]]
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Baron von Schertel worked on hydrofoils prior to and during World War II in [[Germany]]. After the war Schertel's team was captured by the Russians. Schertel himself went to [[Switzerland]], where he established the Supramar company. In [[1952]], Supramar launched the first commercial hydrofoil, PT10, in Lake Maggiore, between Switzerland and [[Italy]]. The PT10 is of surface-piercing type, it can carry 32 passengers and travel at 35 knots. From [[1952]] to [[1971]], Supramar designed many models of hydrofoils: PT20, PT50, PT75, PT100 and PT150. Except the PT150, all are of surface-piercing type. Over 150 of Supramar's design were built, most of them by Rodriquez in Italy. Hitachi in Japan had also built some under license.
The [[Soviet Union]] experimented extensively with hydrofoils, constructing hydrofoil [[ferries]] with streamlined designs, especially during the 1970s and 1980s. Such vessels include the [[Meteor (hydrofoil)|Meteor]] type and the smaller [[Voskhod]] type; these vessels have inspired people in the former Soviet Union to continue tinkering with hydrofoils and selling them to hydrofoil operators.
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The [[United States Navy|U.S. Navy]] operated combat hydrofoils, such as the [[Pegasus class hydrofoil|''Pegasus'' class]], from [[1977]] through [[1993]]. These hydrofoils were fast and well armed, and were capable of sinking all but the largest surface vessels. In their [[narcotics]] interdiction role, they were a nightmare for drug runners, being very fast, and having missiles and guns to stop anything they could not catch, as well as the ability to call in air support.
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* [[Turbojet Ferry]], which speeds passengers across the [[Pearl River Delta]] between [[Hong Kong]] and [[Macau]] in just over an hour, with an average speed of 60 knots (110 km/h). Also services [[Shenzhen]], [[Guangzhou]] and [[Kowloon]]. Operated by Shun Tak-China Travel Ship Management Limited.
* Meteor service between [[Saint Petersburg|St. Petersburg]] and [[Peterhof]], [[Peter the Great|Peter the Great's]] Summer Palace.
* Navigazione Lago Maggiore provides fast and reliable boat services with hydrofoils on the [[Lake Maggiore]] between [[Locarno]] and [[Arona]].
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* [http://www.boeing.com/history/boeing/hydro.html Boeing's Jetfoil]
* [http://www.turbojet.com.hk Turbojet - Hong Kong to Macau Ferry]
* [http://www.foils.org/gallery/misc.htm Human powered hydrofoil examples] {{Webarchive|url=https://web.archive.org/web/20150404000428/http://www.foils.org/gallery/misc.htm |date=2015-04-04 }}
* [http://foils.org The International Hydrofoil Society]
* [http://www.kjps.co.jp/english/eindex.html Kawasaki Jetfoil] {{Webarchive|url=https://web.archive.org/web/20090830064921/http://www.kjps.co.jp/english/eindex.html |date=2009-08-30 }}
* Laporan [[National Advisory Committee for Aeronautics|NACA]]:
** [http://naca.larc.nasa.gov/reports/1958/naca-report-1355/ 1958-hydroplaning] {{Webarchive|url=https://web.archive.org/web/20051025080929/http://naca.larc.nasa.gov/reports/1958/naca-report-1355/ |date=2005-10-25 }}
** [http://naca.larc.nasa.gov/reports/1955/naca-report-1232/ 1955-hydrofoil] {{Webarchive|url=https://web.archive.org/web/20051025075659/http://naca.larc.nasa.gov/reports/1955/naca-report-1232/ |date=2005-10-25 }}
[[Kategori:Jenis kapal]]
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