A Model for Simulating Underway Replenishment Ship Operations.

by T. W. Sikes

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A listing and description of the FORTRAN IV simulation program for resupply at sea. Each simulation run accommodates as many as 32 cases wherein the activities of up to 20 carrier task groups (CTGs) are examined for 90 days. The CTGs are resupplied with oil or ammunition by under way replenishment (unrep) ships cycling between base and up to eight unrep locations. The task groups operate according to an input schedule that is always met, and the program determines the number of logistics ships needed to meet requirements. Daily printouts record the location, activity, receipts or issues, and inventory of each task group and each unrep ship. At the end of the 90-day simulation runs, a final summary printout is made. Unlike most computer simulations, this model has no built-in stochastic features; input data decks can be randomized, if desired. The main routine and nine subroutines have extensive internal documentation and commentary. 79 pp.

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