— TO 400 FMS. SCALE 

 i 266 



I DIRECT PING = 



PINGER AT 

 SURFACE 

 WATER DEPTH 

 2603 FMS. 



SHIFTS 



CROSSING 



SHIFTS 



SHIFTS 



CROSSING 



SHIFTS 



SHIFTS 



CROSSING 



SHIFTS 



SLOW WINCH 

 STOP WINCH 



STARTING TO 

 RAISE PINGER 



Figure R-10. PDR strip chart of Sonar pinger 

 signals. 



Table R-2. Sonar pinger-to-bottom distance 



Table based on sound velocity of 1,500 meters per second (820 fathoms per second) 



R-7 



