second order approximations for the drag effects on the lines would also 

 need to be developed. It is also probably true that the second order 

 terms would have to be developed for ships and platforms. 



Much more study is required before any of these approaches can be 

 clearly defined and compared. Some things that may help in this study 

 could be obtained through sensitivity studies on the present DSSM computer 

 program. Consideration might be given to the importance of mass and 

 damping of the mooring lines, changes in the reference state, etc. 



162 



