Ōsumi-class tank landing ship (1961)

The Osumi-class tank landing ship were a class of transport ships operated by the Maritime Self-Defense Force. It was recommissioned with the donation of three LST-542 class tank landing ships (LST-1 class final model) from the US Navy. Initially, it was categorized as a amphibious landing ship, but the ship type was changed on 1 April 1971.[1]

JDS Shiretoko
Class overview
Name: Ōsumi class
Builders: Sasebo Naval Arsenal
Operators:  Japan Maritime Self-Defense Force
Succeeded by: Atsumi-class
Built: 1944-1945
In commission: 1961-1976
Planned: 3
Completed: 3
Retired: 3
General characteristics
Type: Landing ship tank
Displacement:
  • 1,780 long tons (1,809 t) light
  • 3,640 long tons (3,698 t) full
Length: 328 ft (100 m)
Beam: 50 ft (15 m)
Draft:
  • Unloaded :
  • 2 ft 4 in (0.71 m) forward
  • 7 ft 6 in (2.29 m) aft
  • Loaded :
  • 8 ft 2 in (2.49 m) forward
  • 14 ft 1 in (4.29 m) aft
Propulsion: 2 × General Motors 12-567 diesel engines, two shafts, twin rudders
Speed: 12 knots (22 km/h; 14 mph)
Boats & landing
craft carried:		 2 LCVPs
Troops: Approximately 140 officers and enlisted men
Complement: 8-10 officers, 100-115 enlisted men
Armament:

Description

The Maritime Self-Defense Force's transport and landing craft unit consists of six general-purpose landing craft (LCUs) (built in Japan by extraterritorial procurement) and mobile landing craft (built in Japan) provided by the US Navy based on the MSA Agreement in 1955 (Showa 30). LCM) It all started with the establishment of a fleet of 29 ships. However, all of these were small, had limited transport and landing capabilities, and lacked seakeeping. From this, based on the MSA agreement, three LST-542 class tank landing ships, which had been mothballed in the United States, will be provided.

The LST-542 class was the last model of the LST-1 class tank landing ship, and the displacement is increased by adding one layer of bridge and adding machine guns based on the early model, and it is also the latter model In comparison, the amount of cargo loaded has been reduced to 1,900 tons due to the strengthening of water production capacity. In addition, Ōsumi-class had three davits on each side that could carry landing craft such as mobile landing craft (LCM) and vehicle personnel landing craft (LCVP), but JDS Shiretoko has a bridge structure. There is only one on each side.

Ships in the class
Ōsumi class[2]
Hull no. Name Builder Laid down Launched Commissioned Decommissioned
LST 4001 Ōsumi Jeffersonville Boat and Machine Company, Indiana, United States 7 December 1971 13 June 1972 27 November 1972 13 February 1998
LST 4002 Shimokita Bethlehem-Hingham Shipyard, Massachusetts, United States 23 April 1973 3 August 1973 21 December 1973 12 April 1999
LST 4003 Shiretoko American Bridge Company, Pennsylvania, United States 18 November 1976 16 June 1977 27 October 1977 20 May 2005

Citations
  1. 「海上自衛隊全艦艇史」『世界の艦船』第630号、海人社、2004年8月、 1-261頁、 NAID 40006330308。
  2. "Osumi ex US LST 542 class tank landing ship japan maritime self defense force". www.seaforces.org. Retrieved 29 October 2020.

References
  • Couhat, Jean Labayle, ed. (1986). Combat Fleets of the World 1986/87. Annapolis, Maryland: Naval Institute Press. ISBN 0-85368-860-5.CS1 maint: ref=harv (link)
  • Gardiner, Robert; Chumbley, Stephen & Budzbon, Przemysław, eds. (1995). Conway's All the World's Fighting Ships 1947–1995. Annapolis, Maryland: Naval Institute Press. ISBN 1-55750-132-7.CS1 maint: ref=harv (link)
  • Sharpe, Richard, ed. (1991). Jane's Fighting Ships 1991–92 (94 ed.). Surrey, United Kingdom: Jane's Information Group. ISBN 0-7106-0960-4.CS1 maint: ref=harv (link)
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