Figure 10 - Wave Pressure at Square Station Number 8 



remarkable discrepancies are observed in the results by the lowest order 

 approximation and those by the strip theory. It should be noted that the 

 present solution can never be derived by the successive method starting 

 from the lowest order approximation. This then is another example which 

 illustrates the importance of the inclusion of terms next to the lowest 

 order in the asymptotic expansion. 



ADDED RESISTANCE IN WAVES 



Formulation of the Steady Drift Force 

 in Waves 



When a ship floating on water encounters incident waves, the hydro- 

 dynamic pressure on the hull surface is periodical which yields periodical 

 forces and moments acting horizontally on the ship. They are called wave 

 excitations or wave loads. 



84 



