Anchorage-class dock landing ship

Last updated
US Navy 030117-N-2069B-002 USS Anchorage (LSD 36) departs San Diego Bay.jpg
USS Anchorage (LSD-36)
Class overview
Operators
Preceded by Thomaston-class dock landing ship
Succeeded by Whidbey Island-class dock landing ship
Built1967–1972
In commission1969– Present
Completed5
Active1 (Taiwan)
General characteristics
Type Dock landing ship
Displacement14,000 long tons (14,225 t) Full
Length553 ft (169 m)
Beam85 ft (26 m)
Draft20 ft (6.1 m)
Propulsion
  • 2 × geared steam turbines
  • 2 × boilers, 600 psi
  • 2 shafts, 24,000 shp (18,000 kW) total [1]
Speed22 knots (25 mph; 41 km/h)
Range14,800 nmi (27,400 km; 17,000 mi) at 12 kn (22 km/h) [1]
Boats & landing
craft carried		3 × LCACs

Or

3 × LCUs

Or

9 × LCMs
Troops330
Complement18 officers, 340 enlisted [1]
Armament

The Anchorage-class dock landing ships were a series of five dock landing ships (LSD) constructed and commissioned by the United States Navy between 1965 and 1972. US Navy decommissioned all five of them by 2003.[ citation needed ] They are succeeded by Whidbey Island-class LSDs and Harpers Ferry-class LSDs.

Contents

Design and development

The Anchorage class of dock landing ships was built as a replacement for the remaining aging war-built LSDs of the Ashland and Casa Grande classes. Their principal intended role was to carry additional landing craft to supplement those carried by the Amphibious transport docks (LPD)s, which carried less landing craft in order to accommodate more troops and cargo. [2] [3]

The Anchorage class was slightly larger than the preceding Thomaston class, but were of generally similar design, with a large Well dock aft to accommodate landing craft, and a removable flight deck fitted above the well deck to allow the operation of helicopters, although no hangar was provided. The well dock was 430 feet (130 m) long and 40 feet (12 m) wide, and could accommodate three Landing Craft Utilitys or nine LCM-8 Landing Craft Mechanised. [4] The ship could carry 375 troops compared with the 345 carried by the Thomastons, [5] while 12,000 square feet (1,115 m2) of vehicle parking space was provided. [6]

The ships were propelled by two geared steam turbines driving two shafts and giving a total of 24,000 shaft horsepower (18,000 kW). This gave a speed of 20 knots (23 mph; 37 km/h), the standard speed of the postwar US Navy amphibious fleet. [2] [7] [8] As built, the ships had a defensive armament of eight 3"/50 Mark 33 anti-aircraft guns in four twin mounts, while major sensors included SPS-10 surface search radar and SPS-40 air-search radar. [5]

Construction and service

The name ship of the class, USS Anchorage (LSD-36) was ordered under the Fiscal year 1965 (FY65) shipbuilding program, with three more (USS Portland (LSD-37), USS Pensacola (LSD-38) and USS Mount Vernon (LSD-39)) ordered under the FY66 program and the final ship of the class, USS Fort Fisher (LSD-40), under the FY67 programme. [9] They were laid down between 1967 and 1970 and entered service between 1969 and 1972. [10]

The fire-control directors for the 3 in guns were removed in the late 1970s, while the ships' gun armament was gradually reduced, with two mounts removed by 1990, and the remaining 3 inch guns removed by 1994. [6] Two 20mm Phalanx CIWS mounts to defend against anti-ship missiles and two 25 mm Bushmaster cannon to defend against surface targets were fitted to replace these weapons. [11]

Ship List

NameBuilder [2] Laid Down [2] LaunchedCommissionedFate
USS Anchorage (LSD-36) Ingalls Shipbuilding, Pascagoula, Mississippi13 March 19675 May 1968 [2] 15 March 1969 [2] Decommissioned 1 October 2003 [12]
Sunk as target 17 July 2010 [12]
USS Portland (LSD-37) General Dynamics, Quincy, Massachusetts 21 September 196720 December 1969 [2] 3 October 1970 [2] Decommissioned 4 August 2003 [13]
Sunk as target 25 April 2004 [13]
USS Pensacola (LSD-38) General Dynamics, Quincy, Massachusetts12 March 196911 July 1970 [2] 27 March 1971 [2] Sold to Taiwan Navy in 2000
ROCS Hsu Hai (LSD-193)
USS Mount Vernon (LSD-39) General Dynamics, Quincy, Massachusetts29 January 197017 April 1971 [2] 13 May 1972 [10] Decommissioned 25 July 2003 [14]
Sunk as target 16 June 2005 [14]
USS Fort Fisher (LSD-40) General Dynamics, Quincy, Massachusetts15 July 197022 April 1972 [10] 12 September 1972 [10] Decommissioned 27 February 1998 [15]
Sold for scrapping 22 May 2009 [15]

Citations

  1. 1 2 3 "LSD-36 Anchorage class". GlobalSecurity.org. 28 July 2006.
  2. 1 2 3 4 5 6 7 8 9 10 11 Blackman 1971, p. 509.
  3. ↑ Polmar 1981, pp. 144, 146.
  4. ↑ Polmar 1981, p. 146.
  5. 1 2 Polmar 1981, pp. 145–146.
  6. 1 2 Baker 1998, p. 1046.
  7. ↑ Polmar 1981, p. 125.
  8. ↑ Gardiner and Chumbley 1995, pp. 549–550.
  9. ↑ Gardiner and Chumbley 1995, p. 619.
  10. 1 2 3 4 Baker 1998, p. 1045.
  11. ↑ Gardiner and Chumbley 1995, p. 620.
  12. 1 2 Priolo, Gary P. (1 March 2013). "USS Anchorage (LSD-36)". NavSource Online. Retrieved 4 August 2013.
  13. 1 2 Priolo, Gary P. (15 February 2013). "USS Portland (LSD-37)". NavSource Online. Retrieved 4 August 2013.
  14. 1 2 Priolo, Gary P. (25 January 2013). "USS Vernon (LSD-39)". NavSource Online. Retrieved 4 August 2013.
  15. 1 2 Priolo, Gary P. (19 November 2010). "USS Fort Fisher (LSD-40)". NavSource Online. Retrieved 4 August 2013.

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References

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