Просмотр кода страницы Английская Википедия:5"/54 caliber Mark 42 gun

{{Английская Википедия/Панель перехода}}
{{Infobox weapon
|name=Mark 42 5"/54 Caliber Gun
|image=5 inch Mark 42 on USS Turner Joy (DD-951), front.jpg
|image_size=300
|caption=5 inch/54 Mark 42 on {{USS|Turner Joy|DD-951|6}}
|origin=United States
|type=[[Naval artillery|Naval gun]]
<!-- Type selection -->
|is_ranged=yes
|is_artillery=yes
<!-- Service history -->
|service=1953 - present
|used_by=See [[#Users|''users'']]
|wars=[[Vietnam war]]<br>[[Lebanese Civil War]]
<!-- Production history -->
|designer=
|design_date=
|manufacturer=
|production_date=
|number=
|variants=
<!-- General specifications -->
|weight={{convert|60.4|LT}}
|length={{convert|9.652|m|ftin|abbr=on}}
|part_length={{convert|6.858|m|in|abbr=on}}<br />Rifling: {{convert|5.82|m|in|abbr=on}}
|width=
|height=
|crew=
<!-- Ranged weapon specifications -->
|cartridge= 127 x 835mm .R<br>Conventional: {{convert|31.75|kg|abbr=on|lk=on|1}}
|caliber={{convert|5|in|1}}
|action=
|rate=As built/designed: 40 rounds per minute automatic<br />Down-rated to 28 rounds per minute in 1968
|velocity={{convert|2650|ft/s|abbr=on|1}}
|range=
|max_range=• {{convert|25909|yd|m|abbr=on|1}} at +45° elevation<br />• {{convert|51600|ft|m|abbr=on|1}} at +85° elevation
|feed=
|sights=
<!-- Artillery specifications -->
|breech=
|recoil={{convert|18.75|in|1}}
|carriage=
|elevation=• -15°/+85°<br />Maximum elevation rate: 25°/sec
|traverse=• 150° from either side of centerline<br />Maximum traversing rate: 40°/sec
<!-- Explosive specifications -->
|diameter=
|filling=
|filling_weight=
|detonation=
|yield=
}}

The '''Mark 42 5"/54 caliber gun''' (127mm) is a [[naval gun]] (naval artillery) mount used by the [[United States Navy]] and other countries. It consisted of the Mark 18 gun and Mark 42 gun mount. United States naval gun terminology indicates the gun fires a projectile {{convert|5|in|1}} in diameter, and the barrel is 54 [[Caliber (artillery)|caliber]]s long (barrel length is 5"&nbsp;×&nbsp;54&nbsp;=&nbsp;270" or 6.9&nbsp;meters.)<ref>Fairfield(1921)p.156</ref> In the 1950s a gun with more range and a faster rate of fire than the [[5"/38 caliber gun]] used in World War II was needed, therefore, the gun was created concurrently with the [[3"/70 Mark 26 gun]] for different usages. The 5"/54 Mk 42 is an automatic, dual-purpose (air / surface target) gun mount. It is usually controlled remotely from the Mk 68 Gun Fire Control System, or locally from the mount at the One Man Control (OMC) station.<ref>{{Cite web |url=http://www.tpub.com/content/administration/14067/css/14067_176.htm |title=Seaman - Military manual for the Seaman rate |access-date=2007-12-23 |archive-date=2009-09-12 |archive-url=https://web.archive.org/web/20090912234142/http://www.tpub.com/content/administration/14067/css/14067_176.htm |url-status=dead }}</ref>

The self-loading gun mount weighs about {{convert|60.4|LT}} including two drums under the mount holding 40 rounds of [[Shell (projectile)#Separate loading cased charge|semi-fixed]] case type ammunition. The gun fires {{convert|31.75|kg|abbr=on|1}} projectiles at a velocity of {{convert|2650|ft/s|abbr=on|1}}.<ref name="Bailey(January 1983)p.106">Bailey(January 1983)p.106</ref> Maximum rate of fire is 40 rounds per minute.<ref>O'Neil(March 1971)pp.48-49</ref>  Magazine capacity is 599 rounds per mount.<ref name="Bailey(January 1983)p.106"/> The Mark 42 mount originally was equipped for two on-mount gunners, one surface and one antiaircraft, but the antiaircraft gunner position was scrapped later on when the increasing speed of naval aircraft made manual aiming of anti aircraft weapons impractical. The [[5"/54 caliber Mark 45 gun|Mark 45 lightweight]] ({{convert|22.1|LT}})<ref>O'Neil, March 1971, pp. 48-49</ref> gun mount began replacing the Mk 42 mount in 1971 for easier maintenance and improved reliability in new naval construction for the United States Navy.<ref>Cooney, 1980. p. 40</ref>
[[File:127 mm guns aboard USS Ranger (CVA-61) firing c1961.jpg|thumb|Two of the eight turrets of the carrier {{USS|Ranger|CVA-61|6}} firing, in 1961.]]

==Users==
[[File:5-54 caliber Mark 42 operators.png|thumb|400px|Map with current ship operators with 5-54 caliber Mark 42 guns]]
;{{USA}}
:[[United States Navy]]
* First used on {{USS|Northampton|CLC-1|6}}
* {{sclass|Forrestal|aircraft carrier}} (later removed during upgrade)
* {{sclass|Belknap|cruiser}} and {{USS|Truxtun|CGN-35|6}}
* {{sclass|Charles F. Adams|destroyer}}
* {{sclass|Farragut|destroyer|1||1958}}
* {{sclass|Forrest Sherman|destroyer|1}}
* {{sclass|Mitscher|destroyer|1}}
* {{sclass|Knox|frigate}}

[[File:HMAS Brisbane gun.JPG|thumb|right|Side profile of the 5-inch gun from {{HMAS|Brisbane|D 41|6}}]]
;{{AUS}}
:[[Royal Australian Navy]]
* {{sclass|Perth|destroyer|1}} (modified ''Charles F. Adams'' class)

;{{EGY}}
:[[Egyptian Navy]]
* [[Knox-class frigate|''Damiyat''-class frigate]] (ex-USN ''Knox''-class frigates)

;{{GER}}
:[[German Navy]]
* {{sclass|Lütjens|destroyer|1}} (modified ''Charles F. Adams'' class)

;{{GRE}}
:[[Hellenic Navy]]
* [[Knox-class frigate|''Ipiros''-class frigate]] (ex-USN ''Knox''-class frigates)
* [[Charles F. Adams-class destroyer|''Kimon''-class destroyer]] (ex-USN ''Charles F. Adams''-class destroyer)

;{{JPN}}
:[[Japan Maritime Self-Defense Force]]
* {{sclass|Tachikaze|destroyer|1}}
* {{sclass|Hatakaze|destroyer|1}}
* {{sclass|Haruna|destroyer|1}}
* {{sclass|Takatsuki|destroyer|1}}
* {{sclass|Shirane|destroyer|1}}

;{{MEX}}
:[[Mexican Navy]]
* [[Knox-class frigate|''Ignacio Allende''-class frigate]] (ex-USN ''Knox''-class frigates)

;{{ESP}}
:[[Spanish Navy]]
* {{sclass|Baleares|frigate|1}} (modified ''Knox'' class)

;{{TWN}}
:[[Republic of China Navy]]
* [[Knox-class frigate|''Chih Yang''-class frigate]] (modified ex-USN ''Knox'' class)

;{{THA}}
:[[Royal Thai Navy]]
* {{sclass|Phutthayotfa Chulalok|frigate|1}} (ex-USN ''Knox''-class frigates)

;{{TUR}}
:[[Turkish Navy]]
* [[Knox-class frigate|''Muavenet''-class frigate]] (ex-USN ''Knox''-class frigates)

==See also==
* [[5"/38 caliber gun]] US predecessor
* [[5-inch/54-caliber_Mark_16_gun|5"/54 caliber Mark 16 gun]] US predecessor
* [[5"/54 caliber Mark 45 gun]] US successor
* [[QF 4.5 inch Mk I - V naval gun]] British equivalent

==Notes==
{{Reflist}}

==Bibliography==
{{Refbegin}}
* {{cite journal|author =Bailey, Alfred D |author2=Major USMC|title=The 16-incher: Big, Big Gun|publisher=United States Naval Institute Proceedings  |date=January 1983}}
* {{cite book|title=Ships, Aircraft and Weapons of the United States Navy (NAVSO P-3564)|author =Cooney, David M. |author2=RADM USN|publisher=U.S. Government Printing Office|year=1980}}
* {{cite book|title=Naval Ordnance|author =Fairfield, A.P.|publisher=The Lord Baltimore Press |year=1921}}
* {{cite journal|author =O'Neil, William D. III |title=Gun Systems? For Air Defense?|publisher=United States Naval Institute Proceedings  |date=March 1971}}
{{Refend}}

==External links==
{{Commons category}}
* [http://www.globalsecurity.org/military/systems/ship/systems/mk-42.htm GlobalSecurity.org Mk 42]
* [http://www.navweaps.com/Weapons/WNUS_5-54_mk42.htm NavWeaps.com Mk 42]
* [http://www.tpub.com/content/administration/14067/css/14067_176.htm 5"/54 MK 42 GUN - Seaman - Military manual for the Seaman rate] {{Webarchive|url=https://web.archive.org/web/20090912234142/http://www.tpub.com/content/administration/14067/css/14067_176.htm |date=2009-09-12 }} via tpub.com

{{DEFAULTSORT:5 54 caliber Mark 42 gun}}
[[Category:Naval guns of the United States]]
[[Category:Naval weapons of the Cold War]]
[[Category:Naval anti-aircraft guns|5 inch]]
[[Category:127 mm artillery]]
[[Category:Military equipment introduced in the 1950s]]
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