HILLHOUSE 

 Water Depth: 192 ft. 

 HydroDhone Depth: 100 ft. 

 Distance: 100 ft. 



I Tonal (Spectrum line) 

 '""^ Broad band (cont. Spect.) 



HENRY 

 Water Depth: 162 ft. 

 Hydrophone Depth: 100 ft. 

 Distance: 100 ft. 



120 



p 



1 

 -A 









1 ! ! 











— 



1 



— 



- 



- 



- 



— 



1 



1 



- 



X 







1 















speed. k"o'i 



k 



s 



.pp.ng 













1 ~^ 



^ J«0^ 





s, 









-1-^ 



'N 



^r^ 

 ^ 



^^.^M^ 





K' 



— 



' 







^ 





iJT^-S^~iL 1 ^'° 1 



■-\- 



— ^ 



— 



"-^""x^ 



V 



N^^ 



s" 



s^ 



1 

















,, 



1 1 



Jll 





, , 



U 



1' i ,, 



LJ 



50 100 200 500'.C>00 



HOUCHIN 

 Water Depth: 162 ft. 

 Hydrophone Depth: 100 ft. 

 Distance: 100 ft. 



7 Spectra of underwater noise of platforms Hillhouse, Henry and 

 Houchin superimposed or, average deep water ambient noise spectra 



F-19 



