rOLLOV//fJS 



3S\ r 



Applying Results of Seakeeping Research 

 BEAM 



<S£AS 



SEAS -T-.0<B 



] 7^ 



— .OS 



Loiua (C/eEisrEC) \ScA-~- C^'.^a 1/l^ = AB.SO 



--.04- 

 .03^ 



I 



— .oz 



o 



-^5 SO /3S 



/V/e:ad/ajg . DeG/?£ES 



/so 



-- o 



Fig. 5 - Variation of effective wave height and bending 

 moment coefficient with heading (vertical bending only) 



The comparatively high values of bending moment calculated in beam seas 

 seems reasonable on the basis of the principle of superposition. However, it 

 should be noted that the application of this principle to ship behavior in short- 

 crested seas has not yet been confirmed through model tests. It is to be hoped 

 that facilities for generating realistic short- crested seas in a model tank will 

 be developed by some laboratory in order to check and confirm the superposition 

 principle. 



199 



