Prediction of Ship Slamming at Sea 

 Table 1 



DISCUSSION 



L. Vassilopoulos 



Massachusetts Institute of Technology 



Cambridge, Massachusetts 



For those involved in seakeeping research the present paper is a very wel- 

 come contribution for it deals with the two most important phenomena that dic- 

 tate the speed which a high-powered fine ship can sustain in rough water opera- 

 tion, namely slamming and wetness occurrence. At the same time the 

 probabilistic methods presented and verified in Dr. Ochi's paper provide further 

 useful tools for a realistic evaluation of the importance of seaworthiness in 

 ship design. 



Although the author's analysis and verification was performed only for a 

 Mariner model at moderate speeds, there is no reason to believe that a similar 

 approach would be invalid for other conventional ship forms and at slightly more 

 severe conditions. Of particular interest are the conclusions with regard to the 

 actual mechanisms of slamming and wetness phenomena and the necessary and 

 sufficient conditions which must prevail for their occurrence. It is particularly 



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