Austin class amphibious transport dock

USS Austin (LPD-4)
Class overview
Name:	Austin-class amphibious transport dock
Builders:	New York Naval Shipyard, Ingalls, Lockheed
Operators:	United States Navy  Indian Navy
Preceded by:	Raleigh class
Succeeded by:	San Antonio class
In commission:	1965
Completed:	12
Active:	1
General characteristics
Type:	Amphibious transport dock
Tonnage:	7,713 tons dwt
Displacement:	9,201 tons (light) 16,914 tons (full)
Length:	548 ft (167 m)w/l 569 ft (173 m) o/a
Beam:	84 ft (26 m) w/l 105 ft (32 m) extreme
Draft:	22 ft (6.7 m) navigational, 34 ft (10 m) ballasted
Propulsion:	2 × boilers, 2 × steam turbines, 2 × shafts, 24,000 shp (18,000 kW)
Speed:	21 knots (24 mph; 39 km/h)
Boats & landing craft carried:	1 × LCAC, or 1 × LCU & 3 × LCM-6, or 4 × LCM-8, or 9 × LCM-6, or 24 × AAV
Complement:	24 officers, 396 enlisted, 900 marines
Armament:	2 × 25 mm Mk 38 guns 2 × Phalanx CIWS 8 × .50-calibre machine guns
Aircraft carried:	Up to 6 CH-46 Sea Knight helicopters

USS Dubuque (LPD-8)
Class overview
Name:	Cleveland-class amphibious transport dock
Preceded by:	Austin-class amphibious transport dock
Succeeded by:	Trenton-class amphibious transport dock
Completed:	Cleveland, Dubuque, Denver, Juneau, Coronado, Shreveport, Nashville

USS Trenton (LPD-14)
Class overview
Name:	Trenton-class amphibious transport dock
Operators:	United States Navy  Indian Navy
Preceded by:	Cleveland-class amphibious transport dock
Succeeded by:	San Antonio-class amphibious transport dock
Completed:	Trenton, Ponce

The Austin class of amphibious transport dock followed the Raleigh class and was followed by the San Antonio classes. Note that some sources consider Cleveland (seven built) and Trenton (two built) ships to be a part of the Austin class, but the Naval Vessel Registry lists them as a separate class.

The Cleveland class of amphibious transport dock was a refinement of the Austin class. All earlier classes are being replaced by the San Antonio class.

The Cleveland class was originally to consist of 10 ships, LPD-7 through LPD-16. Seven ships were actually completed and listed in this class, with one being converted to a command ship, Coronado (AGF-11). Trenton (LPD-14) and Ponce (LPD-15) were originally to be included in the Cleveland class, but were completed as almost identical Trenton-class LPDs. The most noticeable difference between the Cleveland and Austin classes is the extra level in the superstructure housing a flag bridge and command and control facilities for an embarked staff which the earlier ships lack.

The Trenton class of amphibious transport dock was a refinement of the Austin and Cleveland classes. Note that some sources consider Cleveland and later ships to be a part of the Austin class, but the Naval Vessel Registry lists them as a separate class. All earlier classes are being replaced by the San Antonio class. LPD-16, while authorized, was cancelled before being constructed.

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