who have an intimate understanding of the Navy^s operational prob- 

 lems. 



As an example of what this combination can produce, we have 

 developed connputer programs to predict the coupled motions of 

 heave and pitch for surface ships operating in a seaway. The input 

 information that is used consists of ship geometry, forward speed, 

 and a stochastic description of the sea state. Another computer 

 program simulates the launch perturbations of a torpedo leaving a 

 moving submarine. This provides a relatively inexpensive method 

 for determining the operational limitations during launch, an insight 

 into how launch problems can be solved, and tool for the design of 

 future submarine weapon systems. 



The research process is continuous and complex, and it is 

 rarely, if ever possible, to label a new discovery as the product of 

 one individual or even one institution. Research has to be coopera- 

 tive , and we can achieve the most by cooperating on an international 

 scale. As this meeting indicates , ONR and the Navy subscribes to 

 that objective. I am sure that all of us are faced with the problem 

 of producing the maximum amount of significant research results 

 with a minimum of funds and manpower, so that we should all benefit 

 from a mutual sharing of our knowledge. 



xili 



