PREFACE 



This report is published to provide coastal engineers with information 

 and guidance on the use of detached breakwaters for shore protection and beach 

 stabilization. The material is based on an extensive literature review and 

 the analysis of existing projects constructed for these purposes. The work 

 was begun under the Shore Protection and Restoration Research Program and com- 

 pleted under the Evaluation of Navigation and Shore Protection Structures 

 Civil Works Research Work Unit 31232 at the US Army Engineer Waterways Experi- 

 ment Station (WES), Coastal Engineering Research Center (CERC) . This study 

 was sponsored by the Office of the Chief of Engineers; Project Monitor was 

 Mr. John H. Lockhart. 



The report was prepared by Mr. William R. Dally, former Hydraulic 

 Engineer, and Ms. Joan Pope, Research Physical Scientist, under the general 

 supervision of Dr. Robert M. Sorensen, former Chief, Coastal Processes and 

 Structural Branch; Mr. R. P. Savage, former Chief, Research Division; 

 Mr. Thomas W. Richardson, Chief, Coastal Structures and Evaluation Branch; 

 Dr. William L. Wood, former Chief, Engineering Development Division, and 

 Dr. James R. Houston, Chief, CERC. The material on physical model testing 

 of detached breakwaters was prepared by Mr. William C. Seabergh, Research 

 Hydraulic Engineer, and Mr. Robert R. Bottin, Jr., Civil Engineer, Wave 

 Dynamics Division. The manuscript was typed by Ms. Mary M. Logan, and 

 the figures were prepared by Mr. Darryl D. Bishop, Civil Engineering Techni- 

 cian. A critical review was performed by Mr. Thomas W. Richardson and Dr. 

 Nicholas C. Rraus. 



COL Allen F. Grum , USA, was Director of WES, Dr. Robert W. Whalin 

 was Technical Director. 



