Testing Ship Models in Transient Waves 



I 



10 



LEG END 



AMOOEL OUT OF WATER 



OMODEL IN WATER 



A ^ 



o O 



A 



A Q) 



'%^ 



X) 



^A 



^, 



.2 .3 .4 .5 .6 



Frequency in cycles per second 



A 

 9 1.0 



Fig. 15 - Comparison of wave height measurements 

 made with two probes with and without model in water 



2 .3 4 5 .6 



Frequency in cycles per second 



8 .9 10 



Fig. 16 - Heave/pitch ratio for Model 4606 at zero 

 speed in head waves; transient test compared with 

 regular wave test results 



525 



