MONITOR HYDROPHONE OUTPUT, dB re 1V 
MONITOR HY DROPHONE OUTPUT, dB re 1V 
-20 
-30 
-40 
HAW-15 TEST LAKE PEND OREILLE 21 MAY 1980 1510 500 ft 
INTERNAL OVERPRESSURE S pst 
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15 30 45 60 75 90 100 
Hz 
Figure All. In-water test at 500-foot depth, at TR +55 min. 
HAW-15 TEST LAKE PEND OREILLE 21 MAY 1980 1719 500 ft 
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