America-class amphibious assault ship vs Austin-class amphibious transport dock

AAmphibious assault ships

America-class amphibious assault ship

Amphibious assault ship with aircraft carrying capability

Reference photo · Configuration may differ

Credit

U.S. Navy photo by Senior Chief Aviation Ordnanceman Lawrence Grove · Public domain · Wikimedia Commons · Public domain · Source ↗ · Modified

Austin-class amphibious transport dock — licensed reference photograph

BAmphibious assault ships

Austin-class amphibious transport dock

Amphibious transport dock

Credit

USN · Public domain · Resized · Public domain · Source ↗ · Modified

First system

Second system

At a glance

Side by side

Length comparisonOne shared metre scale

America-class amphibious assault shipLength

257 m

Length source ↗

Austin-class amphibious transport docko/a

173 m

Length source ↗

Lengths retain their source configuration and measurement scope.

Measured figures

Head to head

18 of 32 rows sourced on both sides

257m

173mo/a

Length

All recorded figures & sources

257 m

Length

Single source

844 ft (257 m)^[source]

173 m

o/a

Single source

167 m

w/l

Single source

548 ft (167 m) w/l 569 ft (173 m) o/a^[source]

32m

32mextreme

Beam

All recorded figures & sources

32 m

Beam

Single source

106 ft (32 m)^[source]

32 m

extreme

Single source

26 m

w/l

Single source

84 ft (26 m) w/l 105 ft (32 m) extreme^[source]

—

10mballasted

Draught

All recorded figures & sources

10 m

ballasted

Single source

6.7 m

navigational

Single source

22 ft (6.7 m) navigational, 34 ft (10 m) ballasted^[source]

45,693tfull load

9,201 tons (light) 16,914 tons (full)

Displacement

All recorded figures & sources

45,693 tonnes

full load

Single source

44,971 long tons (45,693 t) full load^[source]

9,201 tons (light) 16,914 tons (full)^[source]

65officers, 994 enlisted 1,687 Marines

24officers, 396 enlisted, 900 marines

ComplementScopes differ

All recorded figures & sources

65 people

officers, 994 enlisted 1,687 Marines

Single source

65 officers, 994 enlisted 1,687 Marines^[source]

24 people

officers, 396 enlisted, 900 marines

Single source

24 officers, 396 enlisted, 900 marines^[source]

> 37km/hMaximum; Over

39km/hMaximum; Speed

SpeedScopes differ

All recorded figures & sources

> 37 km/h

Maximum; Over

Single source

Over 20 knots (37 km/h; 23 mph)^[source]

39 km/h

Maximum; Speed

Single source

21 knots (24 mph; 39 km/h)^[source]

Bars compare reported quantities only. A larger figure does not make a system better; configurations and test conditions differ.

Configuration

Details

America-class amphibious assault ship and Austin-class amphibious transport dock configuration
Specification	America-class amphibious assault ship	Austin-class amphibious transport dock
Power	Two gas turbines , two shafts, with 70,000 bhp (52,000 kW) total; Two 5,000 hp (3,700 kW) auxiliary propulsion engines^[source]	2 × boilers, 2 × steam turbines, 2 × shafts, 24,000 shp (18,000 kW)^[source]
Builders	Huntington Ingalls Industries Ingalls Shipbuilding Division^[source]	New York Naval Shipyard , Ingalls , Lockheed^[source]
Operators	United States Navy^[source]	United States Navy Indian Navy^[source]
Preceded by	Wasp class^[source]	Raleigh class^[source]
Cost	US$10.094 billion – initial program cost for 3 ships ($3.4B/unit FY15)^[source]	US$235–419 million per unit^[source]
Built	2008–^[source]	—
In commission	2014–^[source]	1965–2017 (U.S.)^[source]
Planned	11^[source]	13^[source]
Building	2^[source]	—
Completed	2^[source]	12^[source]
Active	2^[source]	1 (with India )^[source]
Type	Amphibious assault ship with aircraft carrying capability^[source]	Amphibious transport dock^[source]
Sensors & processing systems	AN/SPS-49 2-D Air Search Radar AN/SPS-48 G 3-D Air Search Radar AN/SPQ-9 B Surface Search Radar AN/USG-2 Cooperative Engagement Capability (CEC) SSDS MK2^[source]	—
Electronic warfare & decoys	AN/SLQ-32B(V)2 2 × Mk53 Nulka decoy launchers^[source]	—
Armament	2 × Rolling Airframe Missile launchers 2 × Evolved Sea Sparrow Missile launchers 2 × Phalanx CIWS 3 × Mk 38 Machine Gun Systems 7 × dual .50 caliber machine guns^[source]	2 × 25 mm Mk 38 guns 2 × Phalanx CIWS 8 × .50-calibre machine guns^[source]
Aircraft carried	AV-8B Harrier II F-35B Lightning II MV-22B Osprey CH-53E Super Stallion or CH-53K King Stallion UH-1Y Venom AH-1Z Viper MH-60S Knighthawk^[source]	Up to 6 CH-46 Sea Knight helicopters^[source]
Aviation facilities	Hangar deck^[source]	—
Country of origin	United States^[source] United States^[source]	United States^[source] United States^[source]
Troop capacity	1,687 Marines^[source]Marines in the sourced complement, separate from Navy officers and enlisted crew	—
Name	—	Austin class^[source]
Succeeded by	—	San Antonio class^[source]
Canceled	—	1^[source]
Retired	—	11^[source]
Tonnage	—	7,713 DWT^[source]
Boats & landing craft carried	—	1 × LCAC , or 1 × LCU & 3 × LCM-6 , or 4 × LCM-8 , or 9 × LCM-6 , or 24 × AAV^[source]
Landing craft carried	—	1 × LCAC , or 1 × LCU & 3 × LCM-6 , or 4 × LCM-8 , or 9 × LCM-6 , or 24 × AAV^[source]Source-stated capacity; all configurations and qualifiers retained

FORCETALLY

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America-class amphibious assault ship

Austin-class amphibious transport dock

Power

Two gas turbines , two shafts, with 70,000 bhp (52,000 kW) total; Two 5,000 hp (3,700 kW) auxiliary propulsion engines^[source]

2 × boilers, 2 × steam turbines, 2 × shafts, 24,000 shp (18,000 kW)^[source]

Builders

Huntington Ingalls Industries Ingalls Shipbuilding Division^[source]

New York Naval Shipyard , Ingalls , Lockheed^[source]

Operators

United States Navy^[source]

United States Navy Indian Navy^[source]

Preceded by

Wasp class^[source]

Raleigh class^[source]

Cost

US$10.094 billion – initial program cost for 3 ships ($3.4B/unit FY15)^[source]

US$235–419 million per unit^[source]

Built

2008–^[source]

—

In commission

2014–^[source]

1965–2017 (U.S.)^[source]

Planned

11^[source]

13^[source]

Building

2^[source]

—

Completed

2^[source]

12^[source]

Active

2^[source]

1 (with India )^[source]

Type

Amphibious assault ship with aircraft carrying capability^[source]

Amphibious transport dock^[source]

Sensors & processing systems

AN/SPS-49 2-D Air Search Radar AN/SPS-48 G 3-D Air Search Radar AN/SPQ-9 B Surface Search Radar AN/USG-2 Cooperative Engagement Capability (CEC) SSDS MK2^[source]

—

Electronic warfare & decoys

AN/SLQ-32B(V)2 2 × Mk53 Nulka decoy launchers^[source]

—

Armament

2 × Rolling Airframe Missile launchers 2 × Evolved Sea Sparrow Missile launchers 2 × Phalanx CIWS 3 × Mk 38 Machine Gun Systems 7 × dual .50 caliber machine guns^[source]

2 × 25 mm Mk 38 guns 2 × Phalanx CIWS 8 × .50-calibre machine guns^[source]

Aircraft carried

AV-8B Harrier II F-35B Lightning II MV-22B Osprey CH-53E Super Stallion or CH-53K King Stallion UH-1Y Venom AH-1Z Viper MH-60S Knighthawk^[source]

Up to 6 CH-46 Sea Knight helicopters^[source]

Aviation facilities

Hangar deck^[source]

—

Country of origin

United States^[source]

Troop capacity

1,687 Marines^[source]Marines in the sourced complement, separate from Navy officers and enlisted crew

—

Name

—

Austin class^[source]

Succeeded by

—

San Antonio class^[source]

Canceled

—

1^[source]

Retired

—

11^[source]

Tonnage

—

7,713 DWT^[source]

Boats & landing craft carried

—

1 × LCAC , or 1 × LCU & 3 × LCM-6 , or 4 × LCM-8 , or 9 × LCM-6 , or 24 × AAV^[source]

Landing craft carried

—

1 × LCAC , or 1 × LCU & 3 × LCM-6 , or 4 × LCM-8 , or 9 × LCM-6 , or 24 × AAV^[source]Source-stated capacity; all configurations and qualifiers retained