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Austin-class amphibious transport dock

Class of US amphibious transport docks

Field	Value
section1	{{Infobox ship/image
image	USS Austin (LPD-4) underway in 1982.JPEG
image_caption	USS Austin (LPD-4)
section2	{{Infobox ship/class overview
name	Austin class
builders	* New York Naval Shipyard,
operators	*
class_before
class_after
cost	US$235–419 million per unit
in_commission_range	1965–2017 (U.S.)
total_ships_planned	13
total_ships_completed	12
total_ships_canceled	1
total_ships_active	1 (with India)
total_ships_retired	11
section3	{{Infobox ship/characteristics
type	Amphibious transport dock
tonnage
displacement	* 9,201 tons (light)
length	* 548 ftw/l
* {{convert	569	ft	m	abbr	on}} o/a
beam	* 84 ft w/l
* {{convert	105	ft	m	abbr	on}} extreme
draft	* 22 ft navigational,
* {{convert	34	ft	m	abbr	on}} ballasted
propulsion	2 × boilers, 2 × steam turbines, 2 × shafts, 24000 shp
speed	21 kn
boats	* 1 × LCAC, or
complement	24 officers, 396 enlisted, 900 marines
armament	* 2 × 25 mm Mk 38 guns
aircraft	Up to 6 CH-46 Sea Knight helicopters

Ingalls, Lockheed
16,914 tons (full)
569 ft o/a
105 ft extreme
34 ft ballasted
1 × LCU & 3 × LCM-6, or
4 × LCM-8, or
9 × LCM-6, or
24 × AAV
2 × Phalanx CIWS
8 × .50-calibre machine guns

The Austin class was a class of twelve amphibious transport dock ships in service with the United States Navy from 1965 to 2017. Note that the U.S. Naval Vessel Registry list separate Cleveland (seven built) and Trenton (two built) class ships, but most sources lists them as a single class. Trenton was sold to India and is the only ship still active.

Design

The Austin class was an enlarged version of the preceding . Designed under project SCB 187B, the ships are about 47 ft longer which increased the displacement by some 3,300 tons. The dock is as large as that of the Raleigh-class. In front of the dock was a 70m long raised level to park vehicles which was connected via a ramp to the flight deck. The ramp ended in a new telescoping hangar. Although the flight deck had room for up to six CH-46 Sea Knight helicopters, the hangar was only a temporary shelter for a single helicopter and not a permanent facility. The propulsion consists of two Foster Wheeler boilers (600 psi), powering two De Laval GT turbines, providing 12,000 SHP each for the two propellers.

The reason for creating a Cleveland/Trenton sub-class is that the last nine ships of the class were built as flagships for amphibious ready groups with an additional deck above the bridge and accommodations for additional 90 personnel. The SPS-40 radar is also placed higher on the mast. Otherwise the ships are identical. Originally the ships were armed only with four 3-inch/50-caliber gun Mark 33 twin mounts. These were later removed and the weapon stations were used to fit two Phalanx CIWS.

The last ship of the class, LPD-16, while authorized, was cancelled before being constructed. served for 10 years as an LPD before she was converted into a command ship. She kept her hull number and was redesignated AGF-11. From 2012 to 2017, served with the United States Military Sealift Command as a forward base ship with helicopter facilities, which was designated "Afloat Forward Staging Base, Interim".

Ships

Ship	Hull no.	Builder	In service	Homeport
Austin	LPD-4	New York Naval Shipyard	1965–2006	Norfolk, Virginia
Ogden	LPD-5	New York Naval Shipyard	1965–2007	San Diego, California
Duluth	LPD-6	New York Naval Shipyard	1965–2005	San Diego, California
Cleveland sub-class
Cleveland	LPD-7	Ingalls Shipbuilding	1967–2011	San Diego, California
Dubuque	LPD-8	Ingalls Shipbuilding	1967–2011	San Diego, California
Denver	LPD-9	Lockheed Shipbuilding	1968–2014	Sasebo, Japan
Juneau	LPD-10	Lockheed Shipbuilding	1969–2008	Sasebo, Japan
Coronado	LPD-11/
AGF-11	Lockheed Shipbuilding	1970–2005	San Diego, California
Shreveport	LPD-12	Lockheed Shipbuilding	1970–2007	Norfolk, Virginia
Nashville	LPD-13	Lockheed Shipbuilding	1970–2009	Norfolk, Virginia
Trenton sub-class
Trenton	LPD-14	Lockheed Shipbuilding	1971–2007, 2007–present	Norfolk, Virginia
Ponce	LPD-15/
AFSB(I)-15	Lockheed Shipbuilding	1971–2017	Norfolk, Virginia

References

Notes

Sources

References

Paul H. Silverstone: ''U.S. Warships since 1945''. Ian Allan Ltd. Sheppertaon, Surrey (UK), 1986, ISBN 0711015988, p. 96.
Friedman, Amphibious Ships, pp. 365
Stefan Terzibaschitsch: ''50 Jahre amphibische Schiffe der U.S. Navy''. Leonberg, Germany, 1995, p. 40.
(30 July 2022). "LPD 4 Austin class". GlobalSecurity.org.
Stefan Terzibaschitsch: ''Seemacht USA''. Bechtermünz Verlang, Augsburg, Germany, 1997, ISBN 3860475762, pp. 576.

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

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