Uncertainties exist in the low frequency range. A closer look at the electro- 

 nic phases and possibly hydrodynamic phases may yield greater confidence in this 

 range. Also, the transition of wave orbits in shallow water may affect the tilt 

 angles and phases. This effect is currently under study and will be reported on at 

 a later date. 



ACKNOWLEDGEMENTS 

 The authors are thankful to their colleagues in the Ocean Environment Group of 

 the Surface Ship Dynamics Branch, Code 156l, DTNSRDC for their help and advice. 

 Special appreciation is extended to Mr. E. Foley for his timeless efforts to keep 

 the buoy operating and for his stimulating discussions on buoy response, and to 

 Ms. S. Bales for her constant encouragement and guidance. 



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