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JS Ōsumi

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JS Ōsumi
History
Japan
Name
  • Ōsumi
  • (おおすみ)
NamesakeŌsumi Peninsula
Ordered1993
BuilderMitsui, Tamano
Laid down6 December 1995
Launched18 November 1996
Commissioned11 March 1998
HomeportKure
IdentificationPennant number: LST-4001
StatusActive
General characteristics
Class and typeŌsumi-class tank landing ship
Displacement
  • 8,900 t (8,800 long tons) standard
  • 13,000 t (13,000 long tons) full load
Length178 m (584 ft 0 in)
Beam25.8 m (84 ft 8 in)
Draught17.0 m (55 ft 9 in)
Propulsion
Speed22 knots (41 km/h; 25 mph)
Boats & landing
craft carried		2 × Landing Craft Air Cushion (LCAC)
Capacityup to 10 main battle tanks
Troops330 personnel
Complement137
Sensors and
processing systems
Electronic warfare
& decoys		4 × Mark 36 SRBOC
Armament
Aircraft carriedUp to 8 helicopters tied topside
Aviation facilitiesHangar and helipad

JS Ōsumi (LST-4001) is the lead ship of the Ōsumi-class tank landing ships of the Japan Maritime Self-Defense Force (JMSDF).

Construction and career

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Ōsumi was laid down on 6 December 1995 and launched on 18 November 1996 by Mitsui Engineering & Shipbuilding, Tamano. She was commissioned into the 1st Landing Group on 11 March 1998.[1]

Initially, the ship was not equipped with a fin stabilizer (rolling prevention device) that improves stability during open sea voyages and helicopter takeoffs and landings due to political judgment, and in 2006, eight years after commissioning, international emergency assistance was provided. The stabilizer installation cost was finally budgeted by the Defense Agency (currently the Ministry of Defense) as a repair cost for a large transport ship to respond to the activity, and at the same time the capacity of aviation fuel was increased. It was also equipped with a tactical air navigation system (TACAN), which was not available at the time of commissioning.

The vessel departed Kobe with Bungo and Tokiwa on 23 September 1999 to transport temporary housing as an aid to the damage caused by the northwestern Turkey earthquake that occurred on 17 August.[2] The first long-distance continuous voyage in the history of the Maritime Self-Defense Force was carried out to Alexandria at an average speed of 18 knots (33 km/h; 21 mph) for 23 consecutive days without calling, and arrived at the port of Heidalpasha in Istanbul on 19 October. The return trip was scheduled to arrive at Kure on 22 November, but an issue that arose aboard Bungo delayed their arrival by one day. They arrived at Sasebo on the 22nd.

From 26 to 28 January 2010, special transportation training was conducted at Sasebo and the waters west of Kyushu together with Kunisaki and USS Tortuga.[citation needed]

This ship delivered supplies to the disaster area after the 2011 Tohoku earthquake and tsunami.[3]

From June to July 2012, she participated in the Pacific Partnership 2012, visited the Philippines and Vietnam, and engaged in medical activities and cultural exchanges.[4] An international emergency relief team was formed to rescue the damage caused by Typhoon Haiyan that struck the Philippines on 8 November 2013, the same year, and was dispatched along with JS Ise and the supply ship JS Towada (Sankai Operation).[5] She left Kure on 18 November, arrived in Leyte Gulf on 22 November, carried out relief supplies transportation, medical care, and epidemic prevention activities, and returned to Japan on 20 December.[5] In addition, Ōsumi was scheduled to participate in training for the defense of remote islands around Okinawa, but was redirected to provide support.[6] The training was planned to be attended by 34,000 people, and Ōsumi was planned to be a base in the training area.[6] The remote island defense training itself was canceled due to the dropout of Ōsumi.

On 15 January 2014, while en route from departure from Kure towards the Mitsui Tamano Shipyard for scheduled maintenance, Ōsumi was abnormally approached by the fishing boat Yugyosen, which tried to cross the tank landing ship a reckless route. Ōsumi repeatedly warned the fishing boat, slowed down but still collided with Yugyosen. The fishing boat capsized, four people on board were thrown into the sea and rescued by the Ōsumi's crew, but two of them, the captain of the fishing boat and the angler died.[7] On 16 May 2015, it was reported that Ōsumi was off Kyushu and was among Japanese naval assets operating with US Navy vessels and the French Navy conducting joint training. Ōsumi sailed with the French Dixmude and Aconit.[8] Mutual embarkation training (cross-deck) was conducted with Dixmude.

For nine days, beginning on 5 May 2018, Ōsumi participated in multilateral joint training on humanitarian assistance and disaster relief organization with the Indonesian Navy off Lombok island.[9] After that, from 22 May to 2 June, she called at Cam Ranh, Vietnam and participated in the activities of Pacific Partnership 2018.[10] On 11 July the ship transported emergency supplies that Yokosuka City decided to provide in response to Kure City's request based on the mutual support agreement in the event of a disaster between the four former military port citiesand supplies requested by the Kure District General Manager to the Yokosuka District General Manager and arrived in Kure on the. In addition, the bathing facility on the ship was opened for the Ground Self-Defense Force members.[11][12] On 26 and 27 August, Ōsumi conducted joint training with USS Wasp and several other ships in the waters around Okinawa.[13] From 5 to 19 October, Ōsumi took part in Japan-US joint training that was conducted in Tanegashima, Kagoshima Prefecture and the surrounding sea and airspace.[14]

In 2021, Ōsumi, alongside the warships JS Ise, JS Ashigara, JS Asahi, JS Kongō, JS Otaka, JS Shirataka and other Japanese naval elements, took part in a 17-day joint training in the East China Sea, with the United States, Australia, and France.[15]

[edit]
  • JS Ōsumi and USS Fort McHenry on 5 February 2006
    JS Ōsumi and USS Fort McHenry on 5 February 2006
  • JS Ōsumi on 7 March 2007
    JS Ōsumi on 7 March 2007
  • JS Ōsumi on 9 May 2010
    JS Ōsumi on 9 May 2010
  • JS Ōsumi's bridge on 9 May 2010
    JS Ōsumi's bridge on 9 May 2010
  • JS Ōsumi's hangar deck on 9 May 2010
    JS Ōsumi's hangar deck on 9 May 2010
  • JS Ōsumi at Yokosuka on 12 March 2015
    JS Ōsumi at Yokosuka on 12 March 2015
  • JS Ōsumi in Manila on 27 April 2018
    JS Ōsumi in Manila on 27 April 2018

Citations

[edit]
  1. ^ GlobalSecurity.org, LST Osumi Class, shiplist[unreliable source?]
  2. ^ "１日も早く仮設住宅をトルコへ ～海上自衛隊初の２３日連続航海で～". www.clearing.mod.go.jp. Retrieved 2021-05-24.
  3. ^ "Warships Supporting Earthquake in Japan". Seawaves. Archived from the original on 2011-03-23.; NHK broadcast, March 18, 2011.
  4. ^ "アジア太平洋地域における安全保障枠組・協力への取組 | 統合幕僚監部".
  5. ^ a b Self-Defense Forces Hifleet arrives off Leyte Island, to deploy Operation Tomodachi. Up to 1180 people in history. Sankei Shimbun. 22 November 2013.
  6. ^ a b China Warning Three large SDF ships entering the disaster area Mainichi Shimbun. 21 November 2013.
  7. ^ "海自艦と釣り船が広島沖で衝突…２人意識不明 : 社会 : YOMIURI ONLINE（読売新聞）". 2014-01-16. Archived from the original on 2014-01-16. Retrieved 2021-05-24.
  8. ^ "フランス海軍が自衛隊、アメリカ第7艦隊と共同訓練を実施 - La France au Japon". archive.fo. 2018-08-21. Archived from the original on 2018-08-21. Retrieved 2021-05-24.
  9. ^ "インドネシア海軍主催多国間共同訓練「コモド２０１８」への参加について" (PDF) (in Japanese). Japan Maritime Self-Defense Forces. Retrieved 13 February 2023.
  10. ^ "防衛省・自衛隊：パシフィック・パートナーシップ２０１８への参加について". Archived from the original on 2020-07-01. Retrieved 2021-05-24.
  11. ^ "呉地方隊:【ギャラリー】". archive.fo. 2018-08-21. Archived from the original on 2018-08-21. Retrieved 2021-05-24.
  12. ^ "東京新聞:広島・呉市に支援物資 横須賀市、輸送艦で:神奈川(TOKYO Web)". archive.fo. 2018-08-20. Archived from the original on 2018-08-20. Retrieved 2021-05-24.
  13. ^ "日米共同訓練の実施について" (PDF) (Press release) (in Japanese). Japan Maritime Self-Defense Forces. Retrieved 13 February 2023.
  14. ^ "日米共同訓練（ブルークロマイト）の実施について" (PDF) (Press release) (in Japanese). Japan Maritime Self-Defense Forces. Retrieved 13 February 2023.
  15. ^ "日米豪仏共同訓練（ＡＲＣ２１）について" (PDF) (Press release) (in Japanese). Japan Maritime Self-Defense Forces. Retrieved 13 February 2023.
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