LHA Design & Construction

lha6 construction1The 844-foot LHA 6 America-class amphibious assault ship takes approximately five years to build. Its construction consists of 216 structural units, requiring 170 erection lifts, including grand blocks, plus two lifts to set the deckhouse on board (the main house, followed by smaller forward section).¬†These blocks are built on land, starting with the ship’s midsection, and later moved to drydock for launch by translation cars.
The America-class is unique among large deck amphibious ships in that it is designed without a well deck, which is used to launch amphibious landing craft. Instead, they are designed with a larger hangar enabling it to carry more aircraft.

lha6 construction2

Two main turbines provide 70,000 horsepower. Additionally, LHA 6 has a separate source of propulsion, a unique auxiliary propulsion system (APS), that was designed for fuel efficiency. The APS uses two induction-type auxiliary propulsion motors powered from the ship’s electrical grid. America-class ships include 1,000 miles of electrical cable, 431,000 feet of pipe and enough hullboard insulation to cover 40 acres.

Ingalls Shipbuilding Awarded $2.38 Billion Contract for Detail Design and Construction of LHA 7

lha7hThe U.S. Navy awards Huntington Ingalls Industries (NYSE:HII) a $2.38 billion fixed-price-incentive contract for the detail design and construction of the multipurpose amphibious assault ship Tripoli (LHA 7). The ship will be built at the company’s Ingalls Shipbuilding division.

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