200 



DEPTH 

 (feet) 



250 



300 



350 



400 



450 



49)0 



4920 



4930 4940 4950 4960 



SOUND VELOCITY (feet/sec -1 ) 



4970 



4980 



Figure B-6. SOUND VELOCITY PROFILES OBTAINED BY USNS CHARLES H. DAVIS IN 

 BOUNDARY WATER REGION (AREA I ) 



B-ll 



