PREFACE 



The study summarized in this report was authorized by the US Army Corps 

 of Engineers (USACE) and performed as part of Civil Works Research and Devel- 

 opment Work Unit 31232, "Evaluation of Navigation and Shore Protection Struc- 

 tures" . Funds were provided through the Coastal Structures Evaluation and 

 Design Program administered by the Coastal Structures and Evaluation Branch 

 (CD-S), Engineering Development Division (CD), of the Coastal Engineering 

 Research Center (CERC) at the US Army Engineer Waterways Experiment Station 

 (WES). Messrs. John H. Lockhart, Jr., John G. Housley, James E. Crews, and 

 Charles W. Hummer were USACE Technical Monitors. Dr. C. Linwood Vincent is 

 CERC Program Manager. 



This report was prepared by Mr. James E. Clausner, CD-SE, CERC, and 

 Ms. Joan Pope, Chief, CD-S. Dr. Clifford L. Truitt, CD-SE, was Principal 

 Investigator (PI) of the work unit. Work was performed under direct 

 supervision of Mr. Thomas W. Richardson, Chief, CD; and under general 

 supervision of Mr. Charles C. Calhoun, Jr., Assistant Chief, and Dr. James R. 

 Houston, Chief, CERC. 



A large portion of this report is based on field work conducted at 

 Cleveland Harbor, Ohio. Work was funded by the Monitoring of Completed 

 Coastal Projects (MCCP) Program, a part of the Operations and Maintenance 

 Program of USACE. Mr. J. Michael Hemsley, of the Prototype Measurements and 

 Analysis Branch (CD-P), CD, was the PI for the MCCP Program. He provided 

 valuable guidance for much of the early side-scan sonar work under the MCCP 

 Program and was responsible for including side-scan sonar applications in 

 other projects. The authors wish to acknowledge the following other members 

 of CD-P who provided information and example records on several projects: 

 Mr. Andrew Morang - Calumet Harbor, Illinois, and Burns Harbor, Indiana; 

 Mr. William M. Kucharski - Crescent City, California; and Mr. David D. 

 McGehee - East Pass Inlet, Florida. Messrs. Darryl D. Bishop and Perry L. 

 Reed, CD-S, provided drafting support for many of the figures, and 

 Ms. Shirley A. J. Hanshaw, Information Technology Laboratory, WES, edited this 

 report. 



The authors wish also to acknowledge the support and cooperation pro- 

 vided by several Corps coastal districts during this study. Their individual 

 contributions are noted in the report. 



