JS Chiyoda (2016)
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JS ''Chiyoda'' (ASR-404) is a
submarine rescue ship A submarine rescue ship is a surface support ship for submarine rescue and deep-sea salvage operations. Methods employed include the McCann Rescue Chamber, deep-submergence rescue vehicles (DSRV's) and diving operations. List of active subm ...
of
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) ...
.


Development and design

It was built as a replacement for the dilapidated submarine rescue ship JS Chiyoda. In terms of design, it is said to be an expanded version of the submarine rescue ship
JS Chihaya JS ''Chihaya'' (ASR-403) is a submarine rescue ship of Japan Maritime Self-Defense Force. Development and design She was built as a replacement for the dilapidated . In terms of design, it is said to be an expanded and improved version of th ...
. The appearance is almost the same as Chihaya, but the mast has been changed to a tower shape. Both the installed DSRV and ROV are new, and the number of people that can be rescued by one dive has been increased from 12 to 16 on the Chihaya-equipped boat, and the battery has been changed from a silver / zinc secondary battery to a lithium-ion secondary battery. We changed it to shorten the charging time. ROVs have significantly improved mobility and search ability, making it possible to accurately check the status of distressed submarines that DSRVs have traditionally been in charge of. Like the older Chiyoda and Chihaya , the ship has a
Deep Submergence Rescue Vehicle A deep-submergence rescue vehicle (DSRV) is a type of deep-submergence vehicle used for rescue of downed submarines and clandestine missions. While DSRV is the term most often used by the United States Navy, other nations have different design ...
(DSRV) to rescue the crew of the submarine, as well as a new remotely operated vehicle (Remotely Operated). It will also be equipped with a complete set of submersible rescue devices (DSRS) including Vehicle, ROV). Equipped with three recompression tanks for diving disease treatment for post-rescue response. However, the submarine's functions such as refueling the submarine, torpedoes, fresh water and accommodation and rest facilities for the submarine crew, which were in the older Chiyoda, are omitted. In addition, in the event of a large-scale disaster, it will be used as a base for medical support, livelihood support for disaster victims, and bathing support. Like Chiyoda (56AS) / Chihaya (08ASR), its capabilities will be further strengthened. Two surgical beds and about 10 beds are installed for this purpose. The main engine is the same diesel as Chihaya, but the fuel tank has been enlarged to have a sufficient cruising range even at high speeds, and it has become possible to reach destinations such as rescue areas quickly.


Construction and career

''Chiyoda'' was
laid down Laying the keel or laying down is the formal recognition of the start of a ship's construction. It is often marked with a ceremony attended by dignitaries from the shipbuilding company and the ultimate owners of the ship. Keel laying is one o ...
on 13 October 2015 at Mitsui Engineering and Shipbuilding, Tamano and launched on 17 October 2016. The vessel was commissioned on 20 March 2018. After 15:00 on 1 May 2018, five men and women fell from a pleasure boat sailing in the vicinity while anchoring off the coast of Ito Port in
Shizuoka Prefecture is a prefecture of Japan located in the Chūbu region of Honshu. Shizuoka Prefecture has a population of 3,637,998 and has a geographic area of . Shizuoka Prefecture borders Kanagawa Prefecture to the east, Yamanashi Prefecture to the northea ...
for a temporary stay for individual ship training in the north of
Hatsushima is an island in Sagami Bay, Japan. Administratively, it is part of the city of Atami, Shizuoka Prefecture, from which it can be reached by ferry. The island is approximately 10 kilometers from the ferry landing in downtown Atami. The island is i ...
, Sagami Bay. The crew visually recognized it, and to rescue the drowning man, they lowered the work boat from the ship and carried out rescue and rescue activities. On June 14, the same year, Japan-US hygiene joint training was conducted with the Self-Defense Forces Yokosuka Hospital, Yokosuka US Navy Hospital, and the
US Navy The United States Navy (USN) is the maritime service branch of the United States Armed Forces and one of the eight uniformed services of the United States. It is the largest and most powerful navy in the world, with the estimated tonnage of ...
Mercy-clas hospital ship
USNS Mercy USNS ''Mercy'' (T-AH-19) is the lead ship of her class of hospital ships in non-commissioned service with the United States Navy. Her sister ship is . She is the third US Navy ship to be named for the virtue mercy. In accordance with the Genev ...
. Before dawn on 26 May 2019, two cargo ships collided at sea about 11 km south of Inubosaki in Choshi City,
Chiba Prefecture is a prefecture of Japan located in the Kantō region of Honshu. Chiba Prefecture has a population of 6,278,060 (1 June 2019) and has a geographic area of . Chiba Prefecture borders Ibaraki Prefecture to the north, Saitama Prefecture to the ...
. The captain, who was rescued about two hours after the sinking of the Chikatsu Maru (5-seater, 499 tons) owned by Katsumaru Kaiun in Imabari City,
Ehime Prefecture is a prefecture of Japan located on the island of Shikoku. Ehime Prefecture has a population of 1,342,011 (1 June 2019) and has a geographic area of 5,676 km2 (2,191 sq mi). Ehime Prefecture borders Kagawa Prefecture to the northeast, Toku ...
, said, "Everyone was on board when the collision occurred." , one was found on board the ship on the 26th and was confirmed dead, but a sound was heard in the second Japan Coast Guard diver's investigation from around 0:30 pm on the 27th, and even after five dives in the room. I confirmed the sound near a certain stern. When a diver hits the hull with a plastic hammer three to four times, a slight tapping sound is heard after a few seconds, and the missing person may be in a place where air remains on the ship. The person is rescued soon after. From October 16 to December 7 of the same year, she was dispatched to participate in the 8th Western Pacific Submarine Rescue Training (Pacific Reach 2019) sponsored by the
Royal Australian Navy The Royal Australian Navy (RAN) is the principal naval force of the Australian Defence Force (ADF). The professional head of the RAN is Chief of Navy (CN) Vice Admiral Mark Hammond AM, RAN. CN is also jointly responsible to the Minister of ...
. The training will be conducted from November 4 to November 15 in the waters west of
Perth Perth is the capital and largest city of the Australian state of Western Australia. It is the fourth most populous city in Australia and Oceania, with a population of 2.1 million (80% of the state) living in Greater Perth in 2020. Perth is ...
,
Australia Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...
, and the participating countries will be the
United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...
, the
Australian Federation The Federation of Australia was the process by which the six separate British self-governing colonies of Queensland, New South Wales, Victoria, Tasmania, South Australia (which also governed what is now the Northern Territory), and Western A ...
, the
Republic of Korea South Korea, officially the Republic of Korea (ROK), is a country in East Asia, constituting the southern part of the Korean Peninsula and sharing a land border with North Korea. Its western border is formed by the Yellow Sea, while its east ...
, the
Republic of Singapore Singapore (), officially the Republic of Singapore, is a sovereign island country and city-state in maritime Southeast Asia. It lies about one degree of latitude () north of the equator, off the southern tip of the Malay Peninsula, borderi ...
,
Malaysia Malaysia ( ; ) is a country in Southeast Asia. The federation, federal constitutional monarchy consists of States and federal territories of Malaysia, thirteen states and three federal territories, separated by the South China Sea into two r ...
and 20 observer participating countries in addition to Japan. Submarine rescue training, search and rescue demonstrations for distressed submarines, etc.https://www.mod.go.jp/msdf/release/201910/20191015-2.pdf


Gallery

File:JMSDF DSRV(JS Chiyoda, ASR-404) left side view at KHI Kobe Shipyard September 2, 2017.jpg, JS ''Chiyoda'' at
Kobe Kobe ( , ; officially , ) is the capital city of Hyōgo Prefecture Japan. With a population around 1.5 million, Kobe is Japan's seventh-largest city and the third-largest port city after Tokyo and Yokohama. It is located in Kansai region, whic ...
on 2 September 2017. File:JS Chiyoda(ASR-404) left front view at Kawasaki Heavy Industries Kobe Shipyard Novenber 11, 2017 02.jpg, JS ''Chiyoda'' at
Kobe Kobe ( , ; officially , ) is the capital city of Hyōgo Prefecture Japan. With a population around 1.5 million, Kobe is Japan's seventh-largest city and the third-largest port city after Tokyo and Yokohama. It is located in Kansai region, whic ...
on 11 November 2017. File:JS Chiyoda(ASR-404) left side view at Kawasaki Heavy Industries Kobe Shipyard November 11, 2017.jpg, JS ''Chiyoda'' at
Kobe Kobe ( , ; officially , ) is the capital city of Hyōgo Prefecture Japan. With a population around 1.5 million, Kobe is Japan's seventh-largest city and the third-largest port city after Tokyo and Yokohama. It is located in Kansai region, whic ...
on 11 November 2017. File:Midship of JS Chiyoda(ASR-404) left side view at Kawasaki Heavy Industries Kobe Shipyard Novenber 11, 2017.jpg, JS ''Chiyoda'' at
Kobe Kobe ( , ; officially , ) is the capital city of Hyōgo Prefecture Japan. With a population around 1.5 million, Kobe is Japan's seventh-largest city and the third-largest port city after Tokyo and Yokohama. It is located in Kansai region, whic ...
on 11 November 2017. File:Funnel of JS Chiyoda(ASR-404) left rear view at Kawasaki Heavy Industries Kobe Shipyard Novenber 11, 2017.jpg, JS ''Chiyoda'' at
Kobe Kobe ( , ; officially , ) is the capital city of Hyōgo Prefecture Japan. With a population around 1.5 million, Kobe is Japan's seventh-largest city and the third-largest port city after Tokyo and Yokohama. It is located in Kansai region, whic ...
on 11 November 2017. File:JS Chiyoda(ASR-404) behind view at Kawasaki Heavy Industries Kobe Shipyard Novenber 11, 2017.jpg, JS ''Chiyoda'' at
Kobe Kobe ( , ; officially , ) is the capital city of Hyōgo Prefecture Japan. With a population around 1.5 million, Kobe is Japan's seventh-largest city and the third-largest port city after Tokyo and Yokohama. It is located in Kansai region, whic ...
on 11 November 2017. File:Stern of JS Chiyoda(ASR-404) left rear view at Kawasaki Heavy Industries Kobe Shipyard Novenber 11, 2017.jpg, JS ''Chiyoda'' at
Kobe Kobe ( , ; officially , ) is the capital city of Hyōgo Prefecture Japan. With a population around 1.5 million, Kobe is Japan's seventh-largest city and the third-largest port city after Tokyo and Yokohama. It is located in Kansai region, whic ...
on 11 November 2017. File:Helicopter deck of JS Chiyoda(ASR-404) left side view at Kawasaki Heavy Industries Kobe Shipyard Novenber 11, 2017.jpg, JS ''Chiyoda'' at
Kobe Kobe ( , ; officially , ) is the capital city of Hyōgo Prefecture Japan. With a population around 1.5 million, Kobe is Japan's seventh-largest city and the third-largest port city after Tokyo and Yokohama. It is located in Kansai region, whic ...
on 11 November 2017.


References

{{DEFAULTSORT:Chiyoda (ASR-404) 2016 ships Ships built by Mitsui Engineering and Shipbuilding Auxiliary ships of the Japan Maritime Self-Defense Force Submarine rescue ships