Page 



21 - Heave Exciting Forces and Pitch Exciting Moments of SWATH 6D 



in Following Seas at 20 Knots 37 



22 - Heave and Pitch Amplitudes of SWATH 6D in Following Seas 



at 20 Knots 38 



LIST OF TABLES 



1 - Values of Principal Parameters for Three Hull Models 15 



2 - Comparison of Numerical Values of Pitch Determinant D 



for SWATH 6A and 6D Ships Using Slender-Body and 



Strip Theories 39 



