the hawsers and mooring lines, but the relative size of this 

 contribution relative to the ship-induced dynamic loads has 

 never been determined. This is important, since surface buoys 

 add additional degrees-of-freedom to the solution and increase 

 computation costs. 



(8) Errors associated with the use of current and wind loads 

 versus relative heading in the static analysis. Determining 

 the sensitivity of typical mooring systems to changes in the 

 static load coefficients would be extremely valuable, since 

 the available data exhibit a large scatter. 



(9) Determining the sensitivity of the model to errors in any 

 input variable would be valuable and practical, particularly 

 for actual studies where many values can only be estimated. 



State-of-the-Art Advances 



Discussions which evolved from the use of bispectra for ship resis- 

 tance measurements indicated that an advance in the state-of-the-art may 

 be possible in the analysis of nonlinear dynamic systems. Development 

 of nonlinear systems identification techniques, as discussed under 

 Session II, would be a major breakthrough not only for mooring analysis, 

 but for all nonlinear dynamic systems. Efforts in this area have been 

 initiated. 



SUMMARY 



The two-day Mooring Dynamics Seminar satisfied all of its objectives. 

 Recommendations for development of a mooring analysis capability were 

 made, and a potential contribution towards advancing the state-of-the-art 

 in nonlinear dynamic analysis was initiated. The presentations and 

 summary reports included in this report form a unique primer on the 

 mooring analysis problem and state-of-the-art analysis techniques. 



ACKNOWLEDGMENT 



CEL gratefully acknowledges the cooperation and enthusiasm shown by the 

 participants, and hopes that they, too, benefited from the discussions. 



