Ochi 



wetness would decrease by 32 percent. Conversely, if the freeboard were de- 

 creased by 10 percent, the probability would increase by 42 percent. 



Table 3 



Comparison of Predicted and Observed Probability 



and Number of Deck Wetnesses (MARINER) 



Prediction of Severity of Deck Wetness 



As was mentioned earlier, the pressure associated with slamming is of the 

 impact type and is proportional to the square of the relative velocity between 

 wave and ship bow at the instant of impact. The pressure associated with deck 

 wetness, on the other hand, is not an impact type and approximately corresponds 

 to a static pressure due to the head of water flowing over the deck. Thus in the 



574 



