Advanced Metalworking Solutions for
Naval Systems that Go in Harm's Way

Automated Hanger Manufacturing

Manufacturing work cells that automate and / or mechanize various processes to manufacture hangers will reduce costs, improve quality and increase throughput on VCS and OR. (U.S. Navy photo)


An Integrated Project Team (IPT) will develop an automated work cell(s) to efficiently produce several types and sizes of hangers used to install and route pipe, ventilation, and electrical cable onboard Virginia class submarines (VCS) and Ohio Replacement (OR) submarines. EB manufactures these parts in several labor-intensive forming and machining operations that are dispersed throughout the facility.


The Navy Metalworking Center (NMC) is conducting a Navy ManTech project that will streamline the production of hangers used extensively on naval submarines at General Dynamics Electric Boat (EB).

Technical Approach

The IPT, which includes the VCS and OR Program Offices; Naval Surface Warfare Center, Carderock Division; EB; and NMC, will evaluate the commonality between part designs, the manufacturing processes used for fabrication, and the material movement between the processes. Using that information, the IPT will develop an optimized process using work cell principles


Implementation of mechanized or automated processes to manufacture shipboard hanger assemblies is anticipated to result in an estimated savings of $943K per VCS hull and $1.79M per OR hull. The savings estimate is derived from an anticipated cost reduction to manufacture 25,000 hangers per VCS hull and 47,500 hangers per OR hull. The savings will be realized through a reduction in rework and material handling as well as an increase in throughput, resulting in a potential five-year savings of $10.3M.


The project results will be implemented at EB on VCS and OR platforms, beginning in the second quarter of fiscal year 2018.




Charles McNamara
Asst. Program Manager for Virginia Class Development and Modernization
Naval Sea Systems Command, PMS 450D


General Dynamics Electric Boat Corporation
Naval Surface Warfare Center, Carderock Division
PMS 450 Virginia Class Program Office
PMS 397 Ohio Replacement Program Office