PREFACE 



This report is published to provide coastal engineers with the results 

 of a series of wave tank tests of artificial seaweed's ability to attenuate 

 wave action. The work was carried out under the coastal processes pro- 

 gram of the U.S. Army Coastal Engineering Research Center (CERC) . 



The report was prepared by John P. Ahrens, Coastal Structures Branch, 

 under the general supervision of Dr. Robert M. Sorensen, Chief, Coastal 

 Structures Branch, Research Division. 



The author acknowledges the numerous contributions by Mr. George 

 Simmons in setting up and conducting the tests, and by Dr. Robert 

 M. Sorensen for the many suggestions which improved the report. 



Comments on this publication are invited. 



Approved for publication in accordance with Public Law 166, 79th 

 Congress, approved 31 July 1945, as supplemented by Public Law 172, 88th 

 Congress, approved 7 November 1963. 



WILSON P. ANDREWS 



LTC, Corps of Engineers 



Commander and Director 



