In the mid 1960's the Computer Aided Ship Design and Construction project office, located in the Naval Ship Engineering Center, was chartered to apply computer aiding techniques to all phases of the naval shipbuilding process. After the aerospace industry's success in developing a productive wiring data system and an in-depth NAVSEC sponsored study at three designated naval shipyards of the cabling/wiring flow process during installation design, it was determined that a similar system should be developed for naval ship design and production. Because there are significant differences between wiring an aircraft and wiring a ship, a direct conversion from one application to the other was ruled out. In 1965 the Westinghouse Electric Corporation was selected to develop a system of computer programs for processing the flow of electrical and electronic cabling/wiring information used in ship construction. This system was to address the entire process of installation design of equipment on board any Navy ship. This included, such functions as cable routing, hanger selection, penetration design, planning and estimating supporting documents and the equivalent of all the necessary wiring plans. The C/W System is now being implemented at Norfolk and Long Beach and is scheduled for implementation in the other naval shipyards. This system is the first of what the author hopes will be a large number of computer aided ship design and construction programs to be developed and implemented by the Naval Sea Systems Command. It is expected that by applying these systems deliberately and diligently in an integrated shipyard modernization program, the total benefits of electronic data processing can be obtained, thus producing a better ship faster and at a lower cost.

Presentation gives an overview of uses and advantages of computer aided design.

The computerized programs for piping system evolution: 1. provided pipe bending data for length, bend angles, roll engles and distance between bends, 2. added fitting, valve, and hanger locations to both bent and straight pipe by match marking and creating pipe details, 3. combined details into assemblies, 4. generated isometric and orthographic drawings, 5. added welding identification and data, 6. extracted and added material information, 7. expanded to include work authorizations, trade work instructions, feed relationships, test boundaries, and serialization, and 8. generated tapes for data transfer to work authorization files and reports for manufacturing and installation.

The Navy program for applying CAD/CAM technology to ship design and construction has undergone a number of changes in the past fen years. To clarify these changes and their relationships, a summary of the history is required as shown in Figure 1. The Naval Sea Systems Command established a computer-aided ship design group in 1952, one year after delivery of the first commercial computer. All of their efforts focused on applying computers to the ship design phases performed by NAVSEA. Based on the success of these efforts, NAVSEA established a program called CASDAC (Computer Aided Ship Design and Construction) in 1966. The objectives of CASDAC were to prove the feasibility of computer application, to verify the benefits, and to foster the use of computers to all phases of ship design and construction. In 1980, this program was renamed the CAD/CAM Program. In 1981, the Navy split the program into two separate but coordinated programs. The "CAM" of "CAD/CAM" became part of a larger effort aimed at the private shipbuilding industry. That program is the shipbuilding Technology Program which in turn is a major segment of the Navy's Manufacturing Technology Program. The "CAD" of CAD/CAM is now called the Computer Supported Design or CSD Program. The remainder of this paper will apply only to the CSD Program.

Proceedings of the REAPS Technical Symposium. Paper No. 25: Integrating Shipyard Design and Manufacturing Functions into an Existing CAD/CAM System.

The Integrated Programs for Aerospace-Vehicle Design (IPAD) National Symposium was held September 17-19, 1980 in Denver, Colorado and was attended by some 420 people from the aerospace, computer, automotive and allied industries and agencies. The Symposium was sponsored by NASA and the IPAD Industry Technical Advisory Board. In lieu of a summary of the presentations given at that conference, reproduced herein is the official IPAD Executive Summary.

In the current severely competitive climate that is challenging shipbuilders everywhere, how information is managed is taking on extraordinary importance. Existing computer aided design (CAD) systems have not been focused on the most critical information needs, for example, information to serve marketing. This limitation is the result of concentrating primarily on aspects of design and manufacturing without regard for impact on an overall manufacturing system. In this paper the need to extend CAD systems is identified so that they would more fully provide critical-data to everyone who has to have understanding of a manufacturing system's capability and availability.