Unclassified 



SECURITY CLASSIFICATION OF THIS PAGE (When Data 



-niered) 





REPORT DOCUMENTATION PAGE 



READ INSTRUCTIONS 

 BEFORE COMPLETING FORM 



TN-1762 



2 GOVT ACCESSION NO. 



DN044010 



3 RECIPIENT'S CATALOG NUMBER 



SAMPLING CRITERIA AND PROCEDURES FOR 

 UNDERWATER INSPECTION OF WATERFRONT 

 FACILITIES 



S TYPE OF REPORT fl PERIOD COVERED 



Final; Oct 1981 - Jun 1986 



6 PERFORMING ORG REPORT NUMBER 



R. L. Brackett 



8 CONTRACT OR GRANT NUMBERfsJ 



9 PERFORMING ORGANIZATION NAME AND ADDRESS 



NAVAL CIVIL ENGINEERING LABORATORY 

 Port Hueneme, California 93043-5003 



10 PROGRAM ELEMENT. PROJECT TASK 

 AREA b WORK UNIT NUMBERS 



62760N; 

 YF60.534.091.01.202 



II CONTROLLING OFFICE NAME AND ADDRESS 



Naval Facilities Engineering Command 

 Alexandria, Virginia 22332 



12 REPORT DATE 



December 1986 



13 NUMBER OF PAGES 



98 



14 MONITORING AGENCY NAME fl ADDRESS?'/ different from Controlling Office) 



15 SECURITY CLASS fo/ this repon) 



Unclassified 



15a DECLASSIFICATION DOWNGRADING 

 SCHEDULE 



16 DISTRIBUTION STATEMEN T fu( Ibis Report) 



Approved for public release; distribution unlimited. 



17 DISTRIBUTION STATEMENT fot the abstract entered in Block 20. if different Irom Report) 



18 SUPPLEMENTARY NOTES 



19 KEY WORDS (Continue on reverse side if necessary and identify by block number) 



Inspection criteria, sampling, statistical analysis, waterfront structures, underwater 

 inspection 



Sampling criteria have been developed for planning and executing an underwater 

 inspection of waterfront structures. The proposed sampling criteria use statistical sampling 

 methods and inferences. Statistical sampling provides an objective method for determining 

 the sample size (for variables and for proportions), for estimating population parameters for 

 a desired confidence level and precision, and for evaluating the cost tradeoffs based upon a 

 desired confidence level and precision. The scientific approach to sampling, where an 



DD i jan 73 1473 EDITION OF I NOV 65 IS OBSOLET 



Unclassified 



continued 



CL ASSIFIC* 



MBL/WHOI 



D D3D1 0DM0E13 7 



