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JS ''Kaga'' (DDH-184) is a
helicopter carrier A helicopter carrier is a type of aircraft carrier whose primary purpose is to operate helicopters, and has a large flight deck that occupies a substantial part of the deck, which can extend the full length of the ship like of the Royal Navy ...
being converted into an aircraft carrier beginning in March, 2022. Officially classified as a multi-purpose operation destroyer, she is the second ship in the of the
Japan Maritime Self-Defense Force , abbreviated , also simply known as the Japanese Navy, is the maritime warfare branch of the Japan Self-Defense Forces, tasked with the naval defense of Japan. The JMSDF was formed following the dissolution of the Imperial Japanese Navy (IJN) ...
(JMSDF), the other being . Her namesake arises from in present-day
Ishikawa Prefecture is a prefecture of Japan located in the Chūbu region of Honshu island. Ishikawa Prefecture has a population of 1,140,573 (31 October 2019) and has a geographic area of 4,186 km2 (1,616 sq mi). Ishikawa Prefecture borders Toyama Prefectu ...
. The ship bears the same name, and is slightly longer in length than, the
World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the World War II by country, vast majority of the world's countries—including all of the great power ...
-era , an aircraft carrier produced in 1928, which participated in the
attack on Pearl Harbor The attack on Pearl HarborAlso known as the Battle of Pearl Harbor was a surprise military strike by the Imperial Japanese Navy Air Service upon the United States against the naval base at Pearl Harbor in Honolulu, Territory of Hawa ...
. ''Kaga'' and ''Izumo'' are the first aircraft carriers built by Japan since the end of World War II. ''Kaga'' was built as part of a wider Japanese military buildup, triggered from heightened Sino-Japanese tensions regarding the contested ownership of the Senkaku Islands.


Construction

''Kaga'' was intended to replace the aging , based on the schedule outlined within the 23 Mid-term Defence Capability Maintenance Plan to construct a 19,500-ton helicopter destroyer. Construction began at the Yokohama plant of
Japan Marine United (informally JMU) is a Japanese ship building marine engineering and service company headquartered in Yokohama, Japan. It's Japan’s second largest shipbuilder after Imabari Shipbuilding, with shipyard facilities in Kure, Hiroshima, Yokoh ...
on 7 October 2013, and the ship was launched on 27 August 2015, with the commissioning on 22 March 2017. Construction of the ship cost .


Characteristics


Aircraft carried

The ship can host up to 28 aircraft, or 14 larger aircraft. While Japanese nomenclature calls ''Kaga'' a "multi-purpose operation destroyer", its main purpose is destroying enemy submarines. Despite this, only 7
anti-submarine warfare Anti-submarine warfare (ASW, or in older form A/S) is a branch of underwater warfare that uses surface warships, aircraft, submarines, or other platforms, to find, track, and deter, damage, or destroy enemy submarines. Such operations are typi ...
helicopters and 2
search and rescue Search and rescue (SAR) is the search for and provision of aid to people who are in distress or imminent danger. The general field of search and rescue includes many specialty sub-fields, typically determined by the type of terrain the search ...
helicopters are planned for the initial aircraft complement. 400 troops and 50 3.5-ton trucks (or equivalent equipment) can also be carried. ''Kaga''s
flight deck The flight deck of an aircraft carrier is the surface from which its aircraft take off and land, essentially a miniature airfield at sea. On smaller naval ships which do not have aviation as a primary mission, the landing area for helicopt ...
has five helicopter landing spots that allow for simultaneous landings or take-offs. Like the ''Izumo'', ''Kaga'' features no 'ski-jump' ramp for aircraft takeoff, instead using a square flight deck, in a similar manner to the American and
amphibious assault ship An amphibious assault ship is a type of amphibious warfare ship employed to land and support ground forces on enemy territory by an amphibious assault. The design evolved from aircraft carriers converted for use as helicopter carriers (and, ...
s. In 2010, Forecast International reported that some design features were intended to support fixed-wing aircraft such as the
Bell-Boeing V-22 Osprey The Bell Boeing V-22 Osprey is an American multi-mission, tiltrotor military aircraft with both vertical takeoff and landing ( VTOL) and short takeoff and landing (STOL) capabilities. It is designed to combine the functionality of a convent ...
and
Lockheed Martin F-35 Lightning II The Lockheed Martin F-35 Lightning II is an American family of single-seat, single-engine, all-weather stealth multirole combat aircraft that is intended to perform both air superiority and strike missions. It is also able to provide elec ...
; as of 2019 both ''Kaga'' and ''Izumo'' are scheduled to be refit to accommodate the F-35B
STOVL A short take-off and vertical landing aircraft (STOVL aircraft) is a fixed-wing aircraft that is able to take off from a short runway (or take off vertically if it does not have a heavy payload) and land vertically (i.e. with no runway). The ...
variant during its five-year overhaul in 2022. ''Kaga''s reconstruction is estimated to be completed as early as 2021. In 2019, it was reported that Prime Minister
Shinzo Abe Shinzo Abe ( ; ja, 安倍 晋三, Hepburn romanization, Hepburn: , ; 21 September 1954 – 8 July 2022) was a Japanese politician who served as Prime Minister of Japan and President of the Liberal Democratic Party (Japan), President of the Lib ...
approved a five-year defence budget, which included the upgrade of ''Izumo'' and ''Kaga'' and the purchase of a combined 147 F-35A and F-35B
stealth fighter Stealth aircraft are designed to avoid detection using a variety of technologies that reduce reflection/emission of radar, infrared, visible light, radio frequency (RF) spectrum, and audio, collectively known as stealth technology. The F-117 Nig ...
s. According to the newspaper ''Mainichi Shimbun'', the Japan Air Self-Defense Force (JASDF) is planning to acquire a total of 42 F-35B variants, introducing 18 by FY2023, six in FY2024 and two in FY2025. These are to form a single squadron consisting of about 20 aircraft. Japan’s Defense Minister,
Nobuo Kishi is a Japanese politician who serves as the Special Advisor to the Prime Minister for National Security Policy and Nuclear Disarmament Issues. A member of the Liberal Democratic Party, he previously served as Minister of Defense of Japan from S ...
, announced that
Nyutabaru Air Base is a military aerodrome of the Japan Air Self-Defense Force. It is located north of Miyazaki in Miyazaki Prefecture, Japan. In July 2021, Japan’s Defense Minister, Nobuo Kishi, announced that the base will host the F-35Bs of the JASDF. A ...
in
Miyazaki Prefecture is a prefecture of Japan located on the island of Kyūshū. Miyazaki Prefecture has a population of 1,073,054 (1 June 2019) and has a geographic area of 7,735 km2 (2,986 sq mi). Miyazaki Prefecture borders Ōita Prefecture to the north, Kuma ...
,
Kyushu is the third-largest island of Japan's five main islands and the most southerly of the four largest islands ( i.e. excluding Okinawa). In the past, it has been known as , and . The historical regional name referred to Kyushu and its surroun ...
will host the F-35Bs.The base is located in close proximity to the Southwest Islands, including Okinawa, and JMSDF’s Kure Base in
Hiroshima Prefecture is a prefecture of Japan located in the Chūgoku region of Honshu. Hiroshima Prefecture has a population of 2,811,410 (1 June 2019) and has a geographic area of 8,479 km² (3,274 sq mi). Hiroshima Prefecture borders Okayama Prefecture to the ...
, which is Kaga‘s home port. ''Kaga'' began her initial modifications in March 2022 at the Japan Marine United (JMU) shipyard in
Kure is a port and major shipbuilding city situated on the Seto Inland Sea in Hiroshima Prefecture, Japan. With a strong industrial and naval heritage, Kure hosts the second-oldest naval dockyard in Japan and remains an important base for the Japan ...
, Hiroshima Prefecture. The proposed modification of ''Kaga'' will be more extensive than for her sister ship (and significantly more expensive) and includes changes to the shape of the bow. The initial modification of ''Kaga'' is expected to take 14 months, followed by a second modification of the ship’s interior, which is expected to begin in March 2027.


Size

''Kaga'' is long, and displaces 27,000 tons, making it the largest ship in the
Japan Maritime Self-Defense Force , abbreviated , also simply known as the Japanese Navy, is the maritime warfare branch of the Japan Self-Defense Forces, tasked with the naval defense of Japan. The JMSDF was formed following the dissolution of the Imperial Japanese Navy (IJN) ...
. However, it is considerably smaller than other contemporary aircraft carriers – the , for instance, is and over 100,000 tons.


Air-defense

The ship is equipped with two
Phalanx The phalanx ( grc, φάλαγξ; plural phalanxes or phalanges, , ) was a rectangular mass military formation, usually composed entirely of heavy infantry armed with spears, pikes, sarissas, or similar pole weapons. The term is particular ...
CiWS (close-in weapon systems) and two
SeaRAM The RIM-116 Rolling Airframe Missile (RAM) is a small, lightweight, infrared homing surface-to-air missile in use by the German, Japanese, Greek, Turkish, South Korean, Saudi Arabian, Egyptian, Mexican, UAE, and U.S. Navies. It was originall ...
CiWS for her defense.


History

''Kaga'' toured the
South China Sea The South China Sea is a marginal sea of the Western Pacific Ocean. It is bounded in the north by the shores of South China (hence the name), in the west by the Indochinese Peninsula, in the east by the islands of Taiwan and northwestern Phil ...
and the
Indian Ocean The Indian Ocean is the third-largest of the world's five oceanic divisions, covering or ~19.8% of the water on Earth's surface. It is bounded by Asia to the north, Africa to the west and Australia to the east. To the south it is bounded by ...
in 2018 in order to bolster Japan's presence in
geostrategic Geostrategy, a subfield of geopolitics, is a type of foreign policy guided principally by geographical factors as they inform, constrain, or affect political and military planning. As with all strategies, geostrategy is concerned with matching me ...
waters. During a state visit to Japan in May 2019,
Donald Trump Donald John Trump (born June 14, 1946) is an American politician, media personality, and businessman who served as the 45th president of the United States from 2017 to 2021. Trump graduated from the Wharton School of the University of ...
visited ''Kaga'' in
Yokosuka is a city in Kanagawa Prefecture, Japan. , the city has a population of 409,478, and a population density of . The total area is . Yokosuka is the 11th most populous city in the Greater Tokyo Area, and the 12th in the Kantō region. The ...
. During his visit, Trump made a speech in which he claimed that many of the United States's allies were taking advantage of its high defense budget by not spending enough on their own militaries. Trump congratulated Japan for "being a good ally and buying American", and wished them success in the coming Reiwa Era.


Gallery

File:JS_Kaga(DDH-184)_right_front_view_at_Port_of_Kanazawa_July_15,_2017.jpg, JS ''Kaga'' right front view at Port of Kanazawa (15 July 2017) File:JS Kaga(DDH-184) behind view at Port of Kanazawa July 15, 2017.jpg, ''Kaga'' stern view, July 2017 File:INS Chennai (D65) with JMSDF JS Kaga.jpg, JS ''Kaga'' with during JIMEX 2020 exercise.


References


External links

* {{DEFAULTSORT:Kaga Izumo-class helicopter destroyers Helicopter carriers 2015 ships Ships built by Japan Marine United