Editing Hydrofoil (section)

==Military usage==

===Germany===
A 17-ton German craft ''VS-6 Hydrofoil'' was designed and constructed in 1940, completed in 1941 for use as a mine layer; it was tested in the [[Baltic Sea]], producing speeds of 47 knots. Tested against a standard [[E-boat]] over the next three years it performed well but was not brought into production. Being faster it could carry a higher payload and was capable of travelling over minefields but was prone to damage and noisier.<ref>{{cite book |title=Channel Islands Occupation Review No 34 |publisher=Channel Islands Occupation Society |date=2006}}</ref>

===Canada===
[[File:HMCS Bras d'Or 03.jpg|thumb|HMCS ''Bras d'Or'', a military concept hydrofoil.]]
In Canada during World War II, Baldwin worked on an experimental [[smoke screen|smoke laying]] hydrofoil (later called the Comox Torpedo) that was later superseded by other smoke-laying technology and an experimental target-towing hydrofoil. The forward two foil assemblies of what is believed to be the latter hydrofoil were salvaged in the mid-1960s from a derelict hulk in Baddeck, Nova Scotia by Colin MacGregor Stevens. These were donated to the Maritime Museum in Halifax, Nova Scotia.

The [[Canadian Forces Maritime Command|Canadian Armed Forces]] built and tested a number of hydrofoils (e.g., Baddeck and two vessels named ''Bras d'Or''), which culminated in the high-speed anti-submarine hydrofoil [[HMCS Bras d'Or (FHE 400)|HMCS ''Bras d'Or'']] in the late 1960s. However, the program was cancelled in the early 1970s due to a shift away from [[anti-submarine warfare]] by the Canadian military.  The ''Bras d'Or'' was a surface-piercing type that performed well during her trials, reaching a maximum speed of {{convert|63|kn|km/h}}.

===Soviet Union===
[[File:BTK pr.206M2.jpg|thumb|A Soviet [[Turya-class torpedo boat|Project 206M "Shtorm"]] patrol fast attack craft hydrofoil of the [[Cuban Navy]].]]
The USSR introduced several hydrofoil-based fast attack craft into [[Soviet Navy|their navy]], principally:
* [[Sarancha class missile boat|''Sarancha'' class missile boat]], a unique vessel built in the 1970s
* [[Turya class torpedo boat|''Turya'' class torpedo boat]], introduced in 1972 and still in service
* [[Matka class missile boat|''Matka'' class missile boat]], introduced in the 1980s and still in service
* [[Muravey class patrol boat|''Muravey'' class patrol boat]], introduced in the 1980s and still in service
* [[Project 664-class torpedo boat|Project 664]]

===United States===
[[File:Aerial port beam view of USS Aquila (PHM-4) underway US Navy DN-SC-87-07089.jpg|thumb|[[USS Aquila (PHM-4)|USS ''Aquila'']], a military hydrofoil. The T-shaped foils are visible just below the water.]]
The [[United States Navy|US Navy]] began experiments with hydrofoils in the mid-1950s by funding a sailing vessel that used hydrofoils to reach speeds in the 30&nbsp;mph range.<ref>[https://books.google.com/books?id=u-EDAAAAMBAJ&pg=PA136 "Sail Boat Stilts Boost Speed."] ''Popular Mechanics'', February 1956, p. 136.</ref> The [[Experimental Craft Hydrofoil No. 4 (XCH-4)|''XCH-4'']] (officially, ''Experimental Craft, Hydrofoil No. 4''), designed by [[William P. Carl]], exceeded speeds of {{convert|65|mph|kn km/h|abbr=on}} and was mistaken for a seaplane due to its shape.<ref>{{cite web|url=http://www.foils.org/index.html|title=XCH4|publisher=International Hydrofoil Society|access-date=8 August 2014|url-status=dead|archive-url=https://web.archive.org/web/20140819151056/http://foils.org/index.html|archive-date=19 August 2014}}</ref> ''Halobates'' was a 1957 US Navy prototype hydrofoil boat built by [[Miami Shipbuilding]]. <ref name="auto">{{Cite web|url=https://www.foils.org/wp-content/uploads/2017/09/MIAMI-97-2000-Copy-1.pdf|title=The Rise and Fall of Miami Shipbuilding  Corporation, by Robert Johnston, 14 Jul 03}}</ref>

The US Navy implemented a small number of combat hydrofoils, such as the [[Pegasus class hydrofoil|''Pegasus'' class]], from 1977 through 1993. These hydrofoils were fast and well armed.<ref name="JenkinsPegasus">{{cite web |author=George Jenkins | url=http://www.foils.org/phmhist.pdf | title=Patrol Combatant Missile (Hydrofoil): PHM History 1973–1995 | publisher=Foils.org | date=1 November 2000 | archive-url=https://web.archive.org/web/20170817075536/http://www.foils.org/phmhist.pdf | archive-date=2017-08-17 | access-date=2017-08-16 }}</ref>

===Italy===
[[File:Sparviero DN-ST-84-03940.jpg|thumb|right|Italian ''Sparviero'' class hydrofoil-missile NIBBIO P-421.]]
The [[Marina Militare|Italian Navy]] used six hydrofoils of the [[Sparviero class patrol boat|''Sparviero'' class]] starting in the late 1970s. These were armed with a 76&nbsp;mm gun and two missiles, and were capable of speeds up to {{convert|50|kn|km/h}}. Three similar boats were built for the [[Japan Maritime Self-Defense Force]].