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 BEFORE COMPLETING FORM 



1. REPORT NUMBER 



?{R S2-5 



2. GOVT ACCESSION NO. 



3. RECIPIENT'S CATALOG NUMBER 



4. TITLE (and Subtitle) 



FLOATING BREAKWATER FIELD EXPERIENCE, 

 WEST COAST 



S. TYPE OF REPORT 4 PERIOD COVERED 



Miscellaneous Report 



6. PERFORMING ORG. REPORT NUMBER 



7. AUTHORrsJ 



Eugene P. Rlchey 



8. CONTRACT OR GRANT NUMBERfe; 



9. PERFORMING ORGANIZATION NAME AND ADDRESS 



Department of Civil Engineering 

 University of Washington 

 Seattle, Washington 



10. PROGRAM ELEMENT. PROJECT, TASK 

 AREA & WORK UNIT NUMBERS 



D31679 



11. CONTROLLING OFFICE NAME AND ADDRESS 



Department of the Army 



Coastal Engineering Research Center (CERRE-CS) 



Kingman Building, Fort Belvoir, Virginia 22060 



12. REPORT DATE 



July 1982 



13. NUMBER OF PAGES 



64 



14. MONITORING AGENCY NAME ft AOORESSfJ/ different from Controlling Office) 



IS. SECURITY CLASS, (of thla report; 



UNCLASSIFIED 



ISa. DECLASSIFIC ATI ON/ DOWN GRADING 

 SCHEDULE 



16. DISTRIBUTION STATEMENT fo/ this ReportJ 



Approved for public release, distribution unlim.ited. 



17. DISTRIBUTION STATEMENT (ol the abetract entered In Block 20, If different from Report) 



18. SUPPLEMENTARY NOTES 



19. KEY WORDS (Continue on reverae aide If neceeatry and Identity by block number) 



Field evaluation Performance Floating breakwaters 



2Q. ABSTRACT fCantfnuw eat reveram a£y£a If iimieeeaxy ami Identify by block number) 



Existing literature on floating breakwaters is lacking field information on the construction and subsequent 

 performance of these structures. This report partially addresses this deficiency by evaluating 11 existing 

 floating breakwaters located in the Pacific Northwest. The breakwaters consist of five concrete caisson units, 

 three Alaskan-catamaran or ladder-type breakwaters constructed of posttensioned concrete segments, one con- 

 structed of surplus oil pipeline sections, one Goodyear floatlng-tlre module breakwater, and one with units 

 consisting of four rows of plastic pontoons. The report Includes a description of each site and breakwater 

 structure, a discussion of the breakwater's performance based on site inspections and discussions with owners, 

 marina operators, etc., and a set of conclusions for the overall evaluation of the structures. 



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