TABLE OF CONTENTS 



ABSTRACT 1 



ADMINISTRATIVE INFORMATION 1 



INTRODUCTION 1 



ANALYTICAL BACKGROUND 3 



RANKINE OVOID 3 



STATIONARY-PHASE WAVE HEIGHTS 3 



TEST EQUIPMENT 4 



RANKINE OVOIDS 6 



TOWING RIG 6 



Support Tower 6 



Guide Cables 6 



Towline 8 



Apparatus for Determining Position and Speed of the Model 8 



Drive Mechanism ■ 9 



WAVE HEIGHT PROBES 9 



RECORDING EQUIPMENT 9 



TEST PROCEDURE AND RESULTS 11 



9.0-FOOT, 7 TO 1 RANKINE OVOID 11 



4.5-FOOT, 7 TO 1 RANKINE OVOID 12 



DISCUSSION OF RESULTS 22 



STATIONARY-PHASE WAVE PROFILES 22 



FROUDE NUMBER SCALING EFFECTS 24 



ACKNOWLEDGMENTS 24 



REFERENCES 27 



LIST OF FIGURES 



Figure 1 — Rankine Ovoid Dimensions 5 



Figure 2 — Stationary-Phase Expression, B, as a Function 



of Froude Number 5 



Figure 3 — Leaning Tower (Located at West End of the Basin) ' 



