The purpose of this thesis was to develop a preliminary simulation model of the Advanced Traceability and Control (ATAC) process. The motivation was the need to evaluate significant policy decisions such as, Defense Management Review Decision (DMRD) 901's "ship or hold" decision. An analysis of the operation of ATAC and the data base maintained by Navy Material Transportation Office (NAVMTO) were made to provide necessary details for constructing the model. Significant data base problems were discovered that precluded the development of an elaborate simulation model.. Although the simulation model is very simple, it does show that more detailed and accurate ATAC data are needed to effectively measure and monitor the ATAC system.http://archive.org/details/serialqueuingmod00dryeLieutenant, United States NavyApproved for public release; distribution is unlimited