~Pien and Lee 



1° 



i 2 



5! 



2;rA 



3 - 



2 - 



1 - 



HEAVE 

 KNOT 30 KNOTS 



PITCH 



THEORY KNOT 



WITH ADDED 

 DAMPING 



EXPERIMENT 

 O 



30 KNOTS 



12 3 4 



W^ 



5 1 



X/L 



2 3 4 5 6 



Figure 8 Heave and pitch motions of Model 5266 



512 



