INTRODUCTION 



Between 5 through 20 May 1964, the U. S. Naval Oceanographic Office 

 in conjunction with the U. S. Naval Photographic Center performed an 

 onshore and underwater cable route survey off the eastern coast of 

 Andros Island, Bahamas. Surveys commenced ashore and proceeded under- 

 water offshore along predesignated bearings to a depth of 130 feet. 

 Survey sites were Salvador Point, Big Wood Cay, Golding Cay, and 

 Deep Creek. Following this phase of the survey a similar operation 

 was pursued off Fresh Creek and High Point Cay in June 1965. In 

 addition, a manned submersible (Perry Cubmarine PC3-B) was employed 

 to investigate the bottom to a depth of 600 feet off Fresh Creek, 

 Big Wood Cay, and Golding Cay (Figures 1 and 2). 



The purpose of the survey was to provide information on the 

 nature of the bottom for future submarine cable, installations off 

 Andros Island in support of the U. S. Navy's Atlantic Undersea Test 

 and Evaluation Center (AUTEC). Additional information regarding 

 oceanography and climatology was obtained prior to these operations 

 to fulfill other project requirements. 



FIELD METHODS 



SCUBA surveys to a depth of 130 feet were conducted from aboard 

 R/V AQUANAUT out of Nassau, New Providence Island. Predesignated 

 onshore cable termination sites were located using aerial photo- 

 graphs and survey monuments from previous site surveys. Survey 

 tracks were established by positioning a transit over the onshore 

 site marker and sighting along the proper bearing. At a measured 

 distance from the shoreline, and guided by shore signals, styrofoam 

 marker buoys were placed at intervals along the track. Subsequent 

 to installation of the buoys, divers took still and motion pictures, 

 samples, and measurements of the bottom at each buoy and between 

 buoys where a change in bottom characteristics occurred. 



Diving operations with PC3-B commenced immediately seaward of 

 the barrier reef off Fresh Creek, in the center of the boat channel 



