Reprint or republication of any of this material 
shall give appropriate credit to the U.S. Army Coastal 
Engineering Research Center. 
Limited free distribution within the United States 
of single copies of this publication has been made by 
this Center. Additional copies are available from: 
National Technical Information Service 
ATTN: Operations Division 
5285 Port Royal Road 
Springfield, Virginia 22161 
Contents of this report are not to be used for 
advertising, publication, or promotional purposes. 
Citation of trade names does not constitute an official 
endorsement or approval of the use of such commercial 
products. 
The findings in this report are not to be construed 
as an official Department of the Army position unless 
so designated by other authorized documents. 
