Northrop Grumman - Defining the Future
Northrop Grumman - Defining the Future

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INGALLS OPERATIONS
AVONDALE OPERATIONS

Ingalls' Modern Marine Design and Production Facilities

Building upon a partnership begun in 1938, Ingalls, Litton Industries, then Ingalls' parent corporation, and the people of the State of Mississippi joined in a partnership in the late 1960s to build an entirely new, modern shipyard. This new 611-acre shipyard, built on the west bank of the Pascagoula River, across from the Company's existing 178-acre facility on the east bank of the river, was developed around a modular ship production concept pioneered in the U.S. by Ingalls and Litton. This process involves the most extensive engineering, design and ship production coordination ever utilized in U.S. Navy shipbuilding.

Modular ship production begins with hundreds of smaller subassemblies in which piping sections, ventilation ducting, and other shipboard hardware, as well as major machinery items, such as main propulsion equipment, generators, and electrical panels are installed. The preoutfitted subassemblies are then joined with others to form assemblies which are welded together to form complete hull and superstructure modules. These giant ship modules, each weighing thousands of tons, are joined together on land to form the completed ship hull prior to launch. The result of this early outfitting and modular construction is a ship more than 70 percent complete at launch.

Ingalls' ship launch and recovery process is just as innovative as its the Company's production methods. Completed ship hulls are rolled, on a rail transfer system, from the construction area to Ingalls' floating drydock for launch. The drydock is then positioned over a deep-water pit and ballasted down, allowing the ship to float free. Following launch, each ship is taken to an outfitting pier for champagne christening, final outfitting, dockside and at-sea predelivery testing and onboard crew training.

This system, refined and technologically upgraded over the years, has been applied to the construction of SPRUANCE (DD 963) Class multimission destroyers, TARAWA (LHA 1) Class general purpose amphibious assault ships, KIDD (DDG 993) Class guided missile destroyers and TICONDEROGA (CG 47) Class Aegis guided missile cruisers; and is now being applied to the construction of ARLEIGH BURKE (DDG 51) Class Aegis guided missile destroyers and WASP (LHD 1) Class multipurpose amphibious assault ships for the U.S. Navy, as well as luxury cruise ships and a variety of offshore marine products.

Today, in addition to pioneering and refining new, more efficient vessel construction methods, the Company's design and technical engineering division offers a versatility of superior engineering services unmatched in a production facility. Ingalls has led the marine industry in pioneering efforts to integrate advanced computer technology into ship and system design, construction and life-cycle support.

Working with computer designers and manufacturers around the world, Ingalls has developed the most advanced, most proficient three-dimensional Computer-Aided Design (CAD) and Engineering (CAE) systems available in the shipbuilding / marine production industry.

The CAD / CAE design process for ships built at Ingalls is linked with an integrated Computer-Aided Manufacturing (CAM) production network of host-based computers and localized minicomputers throughout the shipyard. Ingalls' system produces digital data used by the CAM equipment to electronically direct the operation of numerically-controlled manufacturing equipment cutting steel plates, bending pipe and laying out sheetmetal assemblies, and supporting other manufacturing processes. This technology significantly enhances design efficiency, and reduces the number of manual steps involved in converting design drawings to ship components, improving productivity and efficiency.