INTRODUCTION 



The Civil Engineering Laboratory (CEL) started its research in 

 mooring simulation in FY 78 under the sponsorship of the Naval Facilities 

 Engineering Command (NAVFAC) . The goal of this development effort, 

 called the Mooring Systems Prediction Project, is to develop and demon- 

 strate a validated mooring analysis capability; the effort is being 

 supported under the Ocean Facilities Engineering Exploratory Development 

 Program (YF59.556). 



NAVFAC provided CEL with two mooring analysis computer models for 

 continued development. The first model, DESMOOR (for DESign MOORings), 

 is an inexpensive, simplified model which gives approximate answers. 

 The second model, DSSM (Deep Sea Ship Moor), is an advanced finite 

 element mooring model for use in the final design stage. Neither model 

 was verified by experimental or field measurements. 



After the first year's effort into the problem of mooring simula- 

 tions, it was realized that the behavior of moored ships involved complex 

 mechanisms that were deeply interrelated. It was clear that an under- 

 standing of each of the fields related to the mooring phenomenon was 

 necessary before rational decisions could be made regarding the develop- 

 ment and use of a general mooring analysis capability. 



SEMINAR 



Background 



CEL sponsored a workshop seminar at the beginning of 1980 for the 

 purpose of reviewing the NAVFAC/CEL mooring analysis development effort. 

 Specifically, the objectives of the seminar were as follows: 



1. To define the present state of mooring analysis and simulation. 

 Included here would be an evaluation of the framework of 

 NAVFAC s mooring analysis capability, namely, DESMOOR and DSSM. 



2. To identify the problem areas and uncertainties in the present 

 state-of-the-art . 



3. To develop specific guidelines for the further development of 

 the Navy's mooring analysis capability. 



4. To identify promising research topics for advancing the 

 state-of-the-art of mooring analysis. 



Participants 



CEL invited nine prominent experts to attend. These participants 

 were not necessarily experienced in the mooring dynamics area but were 

 recognized for their expertise in subjects integral to the mooring 

 phenomenon. A list of the attendees and their affiliations follows (in 

 alphabetical order) : 



1 



