LIST OF TABLES 



1. Calculated Detection Ranges for Platform SSD-1 Platform Data 



2. Calculated Detection Ranges for Platform FP-1 Platform Data 



3. Calculated Detection Ranges for Platform FP-2 Platform Data 



LIST OF FIGURES 



1. Simplified diagram of hypothetical fixed drilling platform 



2. Attenuation coefficients in decibels per kiloyard as a function of 

 frequency for sound propagation in sea water 



3. Sound transmission loss in sea water vs. distance 



4. Critical ratio and critical band data for four animals as a 

 function of frequency 



5. Average deep-water ambient noise spectra 



6. Ambient noise spectra at coastal locations with wind speed as a 

 parameter 



7. One-third octave band analysis of water-borne noise from the semi- 

 submersible drilling rig SSD-1 



8. One-third octave band analysis of water-borne noise from the 

 production platform FP-1 



9. One-third octave band analysis of water-borne noise fi'om the 

 production platform FP-2 



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