War Patrol Report (Page 33 b)

CONFIDENTIAL  
Subject: U.S.S. BERGALL - Report of FIRST War Patrol
------------------- ---------------------------------------------------------------------------------------------------------
   
(N) SOUND GEAR AND SOUND CONDITIONS - (Continued).
   
 

SOUND GEAR LISTENING RANGES

 

      
Sound(Ship) Contact No. 13(a) 15 18
Date: 13 Oct. 22 Oct. 28 Oct.
       
Time (Zone) 0815 (H) 0940 (H) 0850 (H)
       
Water Depth (Fathoms) 50 20 75
       
SUBMARINE      
Latitude 11-54 N. 7-13 N. 7-34 N.
Longitude 109-18 E. 104-27 E. 116-48 E.
Course 000° 270° 090°
Speed 3 kts. 3 kts. 3 kts.
Keel Depth 64' 60' 60'
       
TARGET      
Type Target 2 PC's PC DD
Tonnage 75 ---- 1500
Speed (Est.) 7.5 kts. ---- 15 kts.
Turn Count ---- ---- ----
       
Type Sound Equip.
 in use by S/M		 JK QB QB
 

- - - - -Super sonic - - - - - - -
What Did Sound
 First pick up?		 Long
range
pinging		 Light
very fast
screws		 Long
range
pinging
In frequency Band: 16 KC's Pinging
on QB 14.7		 14.9
Initial Range (yards) 8000 ---- 20,000
       
Maximum Range Contact
 Hold (yards		 ---- ---- 30,000
       
Time Contact Lost ---- 1110 (H) 0930 (H)
       
Range contact lost
               (yards)		 ---- ---- 20,000
   
 

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