TABLE OF CONTENTS 



Page 



ABSTRACT 1 



ADMINISTRATIVE INFORMATION 1 



INTRODUCTION 1 



ANALYTICAL DERIVATION 2 



DESCRIPTION OF MODEL AND EXPERIMENTAL TEST SET-UP 9 



TEST RESULTS 9 



FULL-SCALE PREDICTIONS OF MARK 56 AND 57 MINES 10 



PREDICTED PITCHING MOTION IN A SEAWAY 12 



PROBABILITY OF EXCEEDING A CERTAIN PITCH AMPLITUDE 



[PEAK VALUE) 13 



CONCLUSIONS 14 



REFERENCE 22 



LIST OF FIGURES 



Page 



Figure 1 - Coordinate System and Geometric Set-Up 15 



Figure 2 - Model of MARK 56 Mine 15 



Figure 3 - Model of Altered MARK 56 Mine 15 



Figure 4 - Characteristics of Model . . . 16 



Figure 5 - Characteristics of Altered Model 16 



Figure 6 - Sketch of Test Set-Up 16 



Figure 7 - Predicted Pitch Response of Full-Scale Mines 17 



Figure 8 - Comparison of Measured and Predicted Pitch Response for 

 Model 56 Mine at 20-Foot and 40-Foot Depths and of 



Altered (Long Mooring Arm) Mine at 20-Foot Depth 18 



