MONITOR HYDROPHONE OUTPUT, dB re 1V 
MONITOR HY DROPHONE OUTPUT, dB re 1V 
HAW-15 TEST LAKE PEND OREILLE 22 MAY 1980 0725 500 ft 
INTERNAL OVERPRESSURE 5 psi 
8 
-10 
-20 
-30 
-40 
! 
-50|_ 
-680 | 
0 15 30 45 
Hz 
Figure Al5. In-water test at 500-foot depth, at Tytl7 h 10 min. 
a0 HAW-15 TEST LAKE PEND OREILLE 22MAY 1980 0815 500 ft 
INTERNAL OVERPRESSURE 5 psi 
-10 
-20 
-30 4 
-40 
-50 
~60 tine : 
0 15 30 45 60 78 so 
Hz 
Figure Al6. In-water test at 500-foot depth, at T), + 18 h 00 min. 
36 
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