UNCLASSIFIED 



Security Classification 



DOCUMENT CONTROL DATA - R&D 



ty classilication ot title, body ol abstract and inde 



Bt be entered when the overall report is classified) 



t ORIGINATING ACTIVITY fCorpor 



U. S, Naval Oceanographic Office 



REPORT SECURI TY CLASSIFICATION 



Unclassified 



26 GROUP 



3 REPORT TITLE 



Oceaa Bottom Reconnaissance off the East Coast of Andros Island, Bahamas 



4. DESCRIPTIVE NOTES (Type ol report and inclusive dates) 



Technical Report 



5. AUTHORCSJ (Lest name, first name, initial) 



Busby, Roswell F. ; Bright, Chester V.; and Prima, Andres 



6. REPO RT DATE 



March I966 



7a. TOTAL NO. OF PAGES 



59 



7b. NO. OF REFS 



6 



CONTRACT OR GRANT NO. 



b. PROJEC T NO. 



9a. ORIGINATOR'S REPORT NUMBERfSJ 



Technical Report I89 



10. AVAILABILITY/LIMITATION NOTICES 



None 



n. SUPPLEMENTARY NOTES 



12. SPONSORING MILITARY ACTIVITY 



Bureau of Ships 



t3- ABSTRACT 



A visual and photographic survey of the shore and ocean bottom to 600 feet 

 (100 fathoms) depth was performed off selected sites on the east coast of Andros 

 Island, Bahamas. Climatology and oceanographic conditions are also presented. 

 Survey methods employed both SCUBA divers and a manned submersible (Perry 

 Cubmarine PC3-B) to provide direct visual observation and measurement of 

 bottom features. 



The Andros shoreline was observed to vary considerably in morphology and 

 composition: barrier reef development ranges from well- developed to virtually 

 non-existent from north to south along Andros Island. A marginal escarpment 

 commencing offshore between ik and 16 fathoms was observed to descend almost 

 vertically to 100 fathoms. Various morphologic features of the escarpment 

 suggest a lowering of sea level and subsequent subaerial and intertidal erosive 

 processes which have been active in the recent geologic past. 



DD /.?re. 1473 



UNCLASSIFIED 



Security Classification 



