FIGURES 



Page 



1 . Oceanographic Instrumentation Locations, USS REDFIN (SS-272) .... .3 



2. Typical Variables Recorded on the Offner (Dynagraph Type R) 



8-Channel Recorder - USS REDFIN, Cruise II 5 



3. Example of a Wave or Ship Motion Record 9 



4. Surface Wave Spectrum - Transducer No. 1 13 



5. Surface Wave Spectrum - Transducer No. 8 14 



6. Surface Wave Spectra - Comparison of Transducer No. 1 and 



Transducer No. 8 15 



7. Block Diagram of The Analog Wave Analysis System Used by The 



Submarine Systems Section, U.S. Navy Hydrographic Office ...... 17 



8. Comparison of Energy Density of Roll Angle Estimated by Wave 

 Analyzer at The Hydrographic Office and Digital Spectrum Estimated 



by Dafatron, With Integrated Spectrum Superimposed, Run 4 7 1 ..... 18 



9. Digital Spectra of Roll Angle for Lags 30, 60, 90, and 120, Run 4-1 .. . 20 



10. Spectra of Surface Wave Heights, Run 4 ..'.... 23 



11. Spectra of Surface Wave Heights, Run 6 . 24 



12. Roll Angle Spectra for Different Relative Headings Under Hovering 

 Conditions, Run 3 ........................ 28 



13. Roll Angle Spectra for Different Relative Headings Under Hovering 

 Conditions, Run 4 29 



14. Roll Angle Spectra for Different Relative Headings Under Hovering 

 Conditions, Run 5 30 



15. Roll Angle Spectra for Different Relative Headings Under Hovering 

 Conditions, Run 6 ........................ 31 



16. Transverse Flow Velocity Spectra for Different Relative Headings 



Under Hovering Conditions, Run 4 32 



17. Transverse Flow Velocity Spectra for Different Relative Headings 



Under Hovering Conditions, Run 6 33 



18. Longitudinal Flow Velocity Spectra for Different Relative Headings 



Under Hovering Conditions, Run 3 34 



19. Longitudinal Flow Velocity Spectra for Different Relative Headings 



Under Hovering Conditions, Run 4 35 



