This manual is the end product of one of the many research projects being performed under the National Shipbuilding Research Program. The Program is a cooperative, cost-shared effort between the Maritime Administration's Office of Advanced Ship Development and the shipbuilding industry. The objective, as conceived by the Ship Production Committee of The Society of Naval Architects and Marine Engineers, emphasizes productivity. The research effort contained herein is one of the nine General Category projects being managed and cost shared by Todd Shipyards Corporation. It was performed in response to the task statement titled Use of Scale Models as a Management Tool. The work was assigned, by subcontract, to Bath Iron Works Corporation after evaluation of several proposals. Mr. William B. Volmer, Bath Iron Works Corporation, Marketing and Research Department, was the Study Manager; he was assisted by Mr. Steven G. Buttner and Mr. Stephen J. Lardie. Mr. Louis D. Chirillo, Todd Shipyards Corporation, Seattle Division, was the Program Manager. Mr. Charles S. Jonson of the Los Angeles Division, was the Project Manager who provided technical direction. Special acknowledgment is due also to the following for their constructive criticism of this report in its draft form: Mr. Francis Daly, Consultant to the General Manager, Commercial Ship Division, Newport News Shipbuilding and Dry Dock Company; Mr. Horst Gottel, Assistant to the Superintendent for Special Projects, Sun Shipbuilding and Dry Dock Company; and Mr. Roy Tucker, Facilities Engineer, General Dynamics Corporation, Quincy Shipbuilding Division.