Unclassified 



SECURITY CLASSIFICATION OF THIS PAGE 



REPORT DOCUMENTATION PAGE 



form Approved 

 0MB No 0704-0188 

 Exp Date Jun30. 1986 



la REPORT SECURITY CLASSIFICATION 

 Unclassified 



lb RESTRICTIVE MARKINGS 



2a SECURITY CLASSIFICATION AUTHORITY 



2b DECLASSIFICATION /DOWNGRADING SCHEDULE 



3. DISTRIBUTION /AVAILABILITY OF REPORT 



Approved for public release; distribution 

 unlimited. 



4 PERFORMING ORGANIZATION REPORT NUMBER{S) 

 Technical Report CERC-88-3 



5. MONITORING ORGANIZATION REPORT NUM8ER(5) 



6a. NAME OF PERFORMING ORGANIZATION 

 USAEWES, Coastal Engineering 

 Research Center 



6b OFFICE SYMBOL 

 (If applicable) 



7a. NAME OF MONITORING ORGANIZATION 



6c. ADDRESS (.City, State, and ZIP Code) 



Box 631 



Vicksburg, MS 39180-0631 



7b ADDRESS (City, State, and ZIP Code) 



8a. NAME OF FUNDING /SPONSORING 

 ORGANIZATION 



See reverse. 



8b OFFICE SYMBOL 

 (If applicable) 



9. PROCUREMENT INSTRUMENT IDENTIFICATION NUMBER 



8c. ADDRESS (City, State, and ZIP Code) 

 St. Marys, GA 31558-0768 



10. SOURCE OF FUNDING NUMBERS 



1 1 TITLE (Include Security Classification) 

 Kings Bay Coastal Processes Numerical Model 



12. PERSONAL AUTHOR(S) 

 Vemulakonda, S. Rao; Scheffner, Norman W. ; Earickson, Jeffrey A.; Chou, Lucia W. 



t3a TYPE OF REPORT 



Final report 



13b TIME COVERED 



FROM Oct 83 TO Dec 85 



14 DATE OF REPORT (Year, Month, Day) IS PAGE COUNT 

 April 1988 120 



16. SUPPLEMENTARY NOTATION 



Available from National Technical Information Service, 5285 Port Royal Road, Springfield, 

 VA 22161. 



COSATI CODES 



18 SUBJECT TERMS (Continue on reverse if necessary and identify by block number) 

 See reverse. 



19 ABSTRACT (Continue on reverse if necessary and identify by block number) 



St. Marys Inlet is the main ocean entrance to the Naval Submarine Base, Kings Bay, 

 Georgia. In order to accommodate Trident submarines at the base, it became necessary to 

 modify the exterior navigation channel. This report describes details of a numerical 

 modeling effort performed to study the effects of channel modifications on coastal pro- 

 cesses near the inlet, especially channel shoaling rates. 



A system of numerical models, which included models for tides, waves, wave-induced 

 currents, and noncoheslve sediment (sand) transport, was used in the study. The system, 

 together with two computational grids, was called Model B. It was used to study existing 

 (base) as well as planned conditions. Plan 1 is to widen the navigation channel by 100 ft, 

 deepen the channel to -49 ft mlw (46-ft project depth plus 3-ft advance maintenance), and 

 extend the channel on the ocean side with a 20-deg bend to the south. Model B considered 

 the simultaneous sand-tightening of a 1,000-ft segment of the south jetty. 



(Continued) 



20, DISTRIBUTION /AVAILABILITY OF ABSTRACT 

 (3 UNCLASSIFIED/UNLIMITED D SAME AS RPT 



n DTIC USERS 



21 ABSTRACT SECURITY CLASSIFICATION 



Unclassified 



22a. NAME OF RESPONSIBLE INDIVIDUAL 



22b TELEPHONE (Include Area Code) 22c OFFICE SYMBOL 



DDFORM 1473, 84 MAR 



83 APR edition may be used until exhausted 

 All other editions are obsolete 



SECURITY CLASSIFICATION OP THIS PAGE 



Unclassified 



MBL/WHOI 



D D3D1 DmiE7b E 



