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词条 Izumo-class helicopter destroyer
释义

  1. Development

  2. Ships in the class

  3. Future operational role

      Carrier modification  

  4. See also

  5. References

  6. External links

{{short description|Japanese helicopter carrier class}}{{see also|Izumo-class cruiser}}{{Infobox ship image
Ship image =Ship caption = JS Izumo (DDH-183)
}}{{Infobox ship class overview		Name = Izumo-class helicopter destroyerBuilders = Japan Marine UnitedJapan}}Hyūga|helicopter destroyer|2}}Class after =Subclasses =Cost = 113.9 billion yen ($1.2 billion for construction of first unit to date)Built range = 2012–2017In service range =In commission range = 2015–presentTotal ships building =Total ships planned = 2Total ships completed = 2Total ships cancelled =Total ships active = 2Total ships laid up =Total ships lost =Total ships retired =Total ships preserved =
}}{{Infobox ship characteristics		Hide header =Header caption =Ship type = ASW carrierShip displacement =*19,500 tonnes empty[1]
  • 27,000 tons full load[2]
248|m|abbr=on}}[1]38|m|abbr=on}}[1]Ship height =7.5|m|abbr=on}}[1]33.5|m|abbr=on}}[1]Ship hold depth =Ship decks =Ship deck clearance =112,000|hp|abbr=on}}[1]Ship propulsion =*COGAG, two shafts[1]
  • 4 × GE/IHI LM2500IEC gas turbine
30|kn|km/h|abbr=on}}[1]Ship range =Ship endurance =Ship boats =Ship troops =Ship complement = 970 including crew and troops[1]Ship crew =Ship sensors =
  • ATECS (advanced technology command system)
  • OYQ-12 combat direction system
  • OPS-50 AESA radar
  • OPS-28 surface-search radar
  • OQQ-23 bow sonar
Ship EW =
  • NOLQ-3D-1 EW suite
  • Mark 36 SRBOC
  • Anti-torpedo mobile decoy (MOD)
  • Floating acoustic jammer (FAJ)
Ship armament =
  • 2 × Phalanx CIWS
  • 2 × SeaRAM CIWS
Ship aircraft =*7 ASW helicopters and 2 SAR helicopters[1]
  • 28 aircraft maximum
Ship aircraft facilities =Ship notes =
}}

The {{nihongo|Izumo-class helicopter destroyer|いずも型護衛艦|Izumo-gata-goei-kan}} or 22DDH is a helicopter carrier class constructed for the Japan Maritime Self-Defense Force (JMSDF). The ships of this class are currently the largest surface combatants of the JMSDF, taking over the mantle previously held by the {{sclass-|Hyūga|helicopter destroyer|1}}s. The lead ship was officially unveiled at Yokohama on 6 August 2013.[3] In December 2018, the Japanese Cabinet gave approval to convert both ships into aircraft carriers capable of operating the F-35B.[13]

Development

The Japanese Ministry of Defense (MOD) first announced plans for the class on 23 November 2009. This ship's primary mission is anti-submarine warfare (ASW) but peacekeeping and disaster relief operations are also being considered.[4]

The ship carries up to 28 aircraft.[5] However, only 7 ASW helicopters and 2 search and rescue (SAR) helicopters are planned for the initial aircraft complement. For other operations, 400 troops and 50 3.5 ton trucks (or equivalent equipment) can also be carried. The flight deck has 5 helicopter landing spots that allow simultaneous landings or take-offs. The ship is equipped with 2 Phalanx CIWS and 2 SeaRAM for its defense.[1] The destroyers of this class were initially intended to replace the two ships of the {{sclass-|Shirane|destroyer|4}}, which were originally scheduled to begin decommissioning in FY2014.[4]

In 2010, Forecast International reported that some design features were intended to support fixed wing aircraft such as the Bell Boeing V-22 Osprey and Lockheed Martin F-35 Lightning II, although neither the MOD nor the JMSDF have mentioned the possibility of introducing carrier-based fixed-wing aircraft.[6] The ship has neither a "ski-jump" nor a catapult, typical features for launching fixed-wing aircraft.[7] If the Izumo class were to operate fixed-wing aircraft, they would be limited to those capable of STOVL (short take-off, vertical landing) operations.

The construction of the first ship of the class began in 2011 at an IHI Marine United shipyard in Yokohama,[8] with funding totalling 113.9 billion yen ($1.5 billion) being set aside in the fiscal 2010 budget for this purpose.

In December 2017, Japanese newspaper Yomiuri Shimbun reported that the Japanese government was considering modifying its Izumo-class helicopter destroyers to operate with roughly 10 F-35B aircraft. Multiple plans are reportedly under consideration, some of which call for US Marine Corps F-35s to use the vessels, but others for Japan to procure its own aircraft.[9][10] The plan quickly raised criticism from China, where government officials reacted negatively and urged Japan to "act cautiously".[11][12]

Japanese Defence Minister Takeshi Iwaya said on 27 November 2018 that Tokyo is considering buying the F-35B short take-off and vertical landing (STOVL) variant of the Lockheed Martin Lightning II Joint Strike Fighter (JSF) and, as a consequence of this, modifying both Izumo-class helicopter carriers to facilitate F-35B operations.[13]

Ships in the class

In September 2011, the Asahi Shinbun[14] reported that the Ministry of Defence was to proceed with a budget request calling for funds for the construction of the planned second unit in the class. The request was approved and the construction contract was awarded to IHI Corporation in October 2012.[15] This will come under the Defense Ministry's Mid-Term Defense Program FY2011-2015. The first ship in the class, Izumo was launched on 6 August 2013. The ship was commissioned on 25 March 2015.[16]

Izumo was named after {{nihongo|Izumo Province|出雲国|Izumo no kuni}} (present-day Shimane Prefecture), and Kaga after {{nihongo|Kaga Province|加賀国|Kaga no kuni}} (present-day Ishikawa Prefecture).

Pennant no.NameLaid downLaunchedCommissionedHomeport
DDH-183 Izumo 27 January 2012[17] 6 August 2013[18] 25 March 2015[5] Yokosuka, Kanagawa
DDH-184[19] Kaga 7 October 2013 27 August 2015 22 March 2017 Kure, Hiroshima

Future operational role

On 6 August 2013, {{JS|Izumo}} was unveiled in Yokohama, south of Tokyo, Japan. Japanese officials claimed it would be used in national defense, specifically citing anti-submarine warfare and border-area surveillance missions. Additionally, it is also asserted to bolster Japan's ability to transport personnel and supplies in response to large-scale disasters. This unveiling occurred at a time of heightened tensions over the Senkaku Islands.{{citation needed|date=September 2018}}

The Washington Post noted that this ship - the biggest warship in Japan's fleet since World War II - "has raised eyebrows in China and elsewhere because it bears a strong resemblance to a conventional aircraft carrier"[3] and has been described by the Chinese as an “aircraft-carrier in disguise”.[20] Though called a destroyer, some experts believe the new Japanese ship could potentially be used in the future to launch fighter jets (F-35B) or other fixed wing aircraft.[3][6][20] In December 2018, it was announced that both Izumo class warships would be refitted to carry F-35B fighter jets.[21]

Japanese military sources confirmed that the possibility of operating fixed wing aircraft was incorporated into the design of the ships from the earliest stages of the Izumo program, but this was not made public because Article 9 of the Japanese Constitution prohibits Japan from possessing offensive military weapons such as aircraft carriers. The aircraft elevators and the deck paint were designed to handle aircraft like the F-35B, and it would be possible to add a ski-jump to the flight deck for STOVL operations.[22][23][24][25]

In December 2017, Reuters reported that the Japanese government was contemplating modifying the Izumo class to operate F-35B STOVL aircraft.[26] Later, in February 2018, the Yomiuri Shimbun reported that Japan was planning to acquire 40 vertical takeoff and landing F-35Bs, which could be operated from these ships with some alterations.[27][28] In March that same year, the ruling Liberal Democratic Party called upon the Japanese government to develop its own aircraft carriers and operate F-35B aircraft, which has been thought to include refitting the Izumo class.[29] In November 2018, Nikkei Asian Review reported that Japan was planning to procure the F-35B within an order for an additional 100 F-35 aircraft.[30]

Carrier modification

On 18 December 2018, the Japanese Cabinet gave approval to modify the Izumo-class into de-facto aircraft carriers.[31][32] The modifications will reinforce the decks of the Izumo-class ships to support the additional weight of F-35B jets, as well as the heat and forces from the jets during vertical landing.[31] The ruling parties re-designated the Izumo-class ships to Multi-Purpose Operation Destroyers.[33]

See also

  • Sea Control Ship

References

1. ^1 2 3 4 5 6 7 8 9 10 {{cite news |title=ＩＨＩＭＵ、防衛省から平成２２年度計画ヘリコプター搭載護衛艦を受注 |author= |url=http://release.nikkei.co.jp/detail.cfm?relID=278235&lindID=4 |newspaper=Nikkei Shimbun |date=13 April 2011 |accessdate=18 September 2011}}
2. ^世界の艦船2012年1月号81ページ
3. ^1 2 {{cite web|url=https://www.washingtonpost.com/world/asia_pacific/japan-unveils-new-carrier-like-warship-the-largest-in-its-navy-since-world-war-ii/2013/08/06/8fae14d8-fe79-11e2-8294-0ee5075b840d_story.html|title=Japan unveils new carrier-like warship, the largest in its navy since World War II|date=6 August 2013|accessdate=6 August 2013}}
4. ^1 {{cite news |title=平成２１年度政策評価書（事前の事業評価） |author= Ministry of Defense|url=http://www.mod.go.jp/j/approach/hyouka/seisaku/results/21/jizen/honbun/01.pdf |newspaper= |date= |accessdate=18 September 2011}}
5. ^1 {{cite web |last1=Hardy |first1=James |url=http://www.janes.com/article/50196/japan-commissions-helicopter-carrier-izumo |title=Japan commissions helicopter carrier Izumo |website=janes.com |date=25 March 2015 |accessdate=20 May 2015}}
6. ^1 {{cite news |title=Details of New Japanese 'Helicopter Destroyer' |author= Forecast International|url=http://www.defencetalk.com/details-of-new-japanese-helicopter-destroyer-27119/ |newspaper=Defensetalk |date=21 June 2010}}
7. ^Holm, Erik. "Japan launches biggest warship since WW2" (in Danish). Ingeniøren, 12 August 2013. Accessed: 12 August 2013.
8. ^{{cite news|title=ＩＨＩ、防衛省からヘリコプター搭載護衛艦を８００億円で受注|url=http://www.nikkan.co.jp/news/nkx0120110401agbx.html|newspaper=Nikkan Kogyo Shimbun|date=1 April 2011|deadurl=yes|archiveurl=https://web.archive.org/web/20141217135405/http://www.nikkan.co.jp/news/nkx0120110401agbx.html|archivedate=17 December 2014|df=}}
9. ^{{cite web|title=Govt eyes converting Izumo to aircraft carrier|url=http://www.the-japan-news.com/news/article/0004148477|website=The Japan Times (Yumiuri Shimbun)|accessdate=27 December 2017|archiveurl=https://archive.is/20171227230118/http://www.the-japan-news.com/news/article/0004148477|archivedate=27 December 2017|date=26 December 2017}}
10. ^{{cite web|last1=Jennings|first1=Gareth|title=Japan considers F-35B for carrier ops, national media reports|url=http://www.janes.com/article/76663|website=IHS Jane's 360|accessdate=27 December 2017|archiveurl=https://archive.is/20171227230615/http://www.janes.com/article/76663/japan-considers-f-35b-for-carrier-ops-national-media-reports|archivedate=27 December 2017|date=27 December 2017}}
11. ^{{cite web|last1=Rahmat|first1=Ridzwan|title=China urges Japan to ‘act cautiously’ on considerations to refit Izumo class for F-35Bs|url=http://www.janes.com/article/76659/|website=IHS Jane's 360|accessdate=27 December 2017|archiveurl=https://archive.is/20171227230550/http://www.janes.com/article/76659/china-urges-japan-to-act-cautiously-on-considerations-to-refit-izumo-class-for-f-35bs|archivedate=27 December 2017|date=27 December 2017}}
12. ^{{cite web|title=China upset at Japan’s plan to buy F-35B stealth fighter ‘jump jets’ for its helicopter carriers|url=http://www.news.com.au/technology/innovation/china-upset-at-japans-plan-to-buy-f35b-stealth-fighter-jump-jets-for-its-helicopter-carriers/news-story/2a4e34b4ff6329661d8aa9f0ddb7f671|website=news.com.au|accessdate=27 December 2017|archiveurl=https://archive.is/20171227230336/http://www.news.com.au/technology/innovation/china-upset-at-japans-plan-to-buy-f35b-stealth-fighter-jump-jets-for-its-helicopter-carriers/news-story/2a4e34b4ff6329661d8aa9f0ddb7f671|archivedate=27 December 2017|date=27 December 2017}}
13. ^https://www.janes.com/article/84846/japan-considers-procuring-f-35b-for-its-izumo-class-helicopter-carriers
14. ^{{cite news |title=Defense Ministry plans second helicopter destroyer |author= |url=http://www.asahi.com/english/TKY201109160363.html |newspaper=asahi.com |date=17 September 2011 |accessdate=17 September 2011}}
15. ^{{cite news|url=http://www.nikkan.co.jp/news/nkx0120121001baae.html|script-title=ja:ＩＨＩＭＵ、防衛省からヘリ搭載護衛艦を受注|date=October 1, 2012|accessdate=August 9, 2013|language=Japanese|title=Archived copy|archive-url=https://web.archive.org/web/20130311143435/http://www.nikkan.co.jp/news/nkx0120121001baae.html|archive-date=March 11, 2013|dead-url=yes|df=mdy-all}}
16. ^{{cite news|last1=Reynolds|first1=Isabel|title=Japan’s Biggest Warship Since World War II Enters Service|url=https://www.bloomberg.com/news/articles/2015-03-25/japan-s-biggest-warship-since-world-war-ii-enters-service|accessdate=24 March 2017|agency=Bloomberg|date=Mar 25, 2015}}
17. ^国内最大のヘリコプター搭載護衛艦の起工式を開催 {{webarchive|url=https://web.archive.org/web/20120620125930/http://www.ihi.co.jp/ihi/press/2011/2012-1-27/index.html |date=2012-06-20 }}, IHI Marine United, 27 January 2012
18. ^{{Cite web|url=http://www.mod.go.jp/msdf/formal/info/news/201307/071601.pdf|script-title=ja:平成22年度護衛艦の命名・進水式について|accessdate=16 July 2013|date=16 July 2013|author=Maritime Staff Office|format=PDF|language=Japanese|deadurl=yes|archiveurl=https://web.archive.org/web/20130716082202/http://www.mod.go.jp/msdf/formal/info/news/201307/071601.pdf|archivedate=16 July 2013|df=}}
19. ^{{cite web |url=http://www.navyrecognition.com/index.php?option=com_content&task=view&id=1182 |title=Izumo class (22DDH) Helicopter Destroyer -JMSDF |publisher=navy-recognition.com |date=11 August 2013 |accessdate=7 June 2015}}
20. ^1 {{cite journal|url=https://www.economist.com/news/asia/21583292-country-launches-its-biggest-warship-second-world-war-wide-mouthed-frog |title=Japanese security: Wide-mouthed frog |work=The Economist |date=10 August 2013 |accessdate=7 June 2015}}
21. ^https://edition.cnn.com/2018/12/18/asia/japan-aircraft-carriers-intl/index.html
22. ^https://www.aspistrategist.org.au/the-ship-that-dare-not-speak-its-name/
23. ^http://www.asahi.com/ajw/articles/AJ201802230054.html
24. ^http://www.thedrive.com/the-war-zone/18855/officials-admit-japans-helicopter-destroyers-were-also-designed-for-jets
25. ^https://blog.usni.org/posts/2018/02/28/like-the-izumo-class-just-wait-for-the-follow-on-class
26. ^{{cite web |url=https://www.reuters.com/article/us-japan-defence-carrier/japan-considers-refitting-helicopter-carrier-for-stealth-fighters-government-sources-idUSKBN1EK0CF |title=Japan considers refitting helicopter carrier for stealth fighters: government sources |website=Reuters |last1=Kubo |first1=Nobuhiro |last2=Kelly |first2=Tim |date=26 December 2017 |access-date=27 September 2018}}
27. ^{{cite web |url=http://the-japan-news.com/news/article/0004240516 |archive-url=https://web.archive.org/web/20180220025514/http://the-japan-news.com/news/article/0004240516 |title=F-35B jets eyed to defend remote isles / Fighters also mulled for MSDF’s Izumo ship |date=12 February 2018 |archive-date=20 February 2018 |access-date=25 September 2018 |website=Yomiuri Shimbun}}
28. ^http://nationalinterest.org/blog/the-buzz/japan-might-buy-many-40-f-35b-fighters-report-states-24544
29. ^https://www.wsj.com/articles/japan-seeks-to-answer-china-with-an-aircraft-carrier-1521534454
30. ^{{cite web |title=Japan to order 100 more F-35 fighters from US |url=https://asia.nikkei.com/Politics/International-Relations/Japan-to-order-100-more-F-35-fighters-from-US |website=Nikkei Asian Review |accessdate=27 November 2018 |archiveurl=https://web.archive.org/web/20181127033341/https://asia.nikkei.com/Politics/International-Relations/Japan-to-order-100-more-F-35-fighters-from-US |archivedate=27 November 2018 |location=Tokyo |date=27 November 2018 |deadurl=no}}
31. ^1 2 {{cite news|url=https://edition.cnn.com/2018/12/18/asia/japan-aircraft-carriers-intl/index.html|title=Japan to have first aircraft carriers since World War II|publisher=CNN|date=December 18, 2018}}
32. ^{{cite news|url=https://www.straitstimes.com/asia/east-asia/japan-gives-nod-to-first-aircraft-carriers-since-wwii-says-move-does-not-violate|title=Japan gives nod to first aircraft carriers since WWII, says move does not violate pacifist Constitution|publisher=The Straits Times|date=19 December 2018}}
33. ^{{cite web |url=http://www.asahi.com/ajw/articles/AJ201812060055.html |deadurl=no |archiveurl=https://web.archive.org/web/20181209044233/http://www.asahi.com/ajw/articles/AJ201812060055.html |archivedate=9 December 2018 |title=Japan avoids flak by refusing to call flattop ‘aircraft carrier’ |work=The Asahi Shimbun |date=6 December 2018 |accessdate=29 December 2018}}

External links

{{commonscat|Izumo class helicopter carriers}}
  • CG Photos of 19500t class 22DDH destroyer Ships of the World
  • 22DDH Class GlobalSecurity.org
  • Illustrations of 22DDH class GlobalSecurity.org
{{Izumo-class helicopter destroyers}}{{Combatant ship classes of the Japan Maritime Self-Defense Force}}

2 : Izumo-class helicopter destroyers|Helicopter carrier classes
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