Publication Abstract

Simulation Modeling and Analysis Support for Seabasing Capability Studies

Greenwood, A., Walden, C., Hill. T. W., Holt, R., & Simmons, L. (2008). Simulation Modeling and Analysis Support for Seabasing Capability Studies. In Modeling, Simulation, and Analysis (Eds.), Technical Report Provided to Northrop Grumman Shipbuilding. Ocean Springs, MS .


The Naval Combat Group Supply (NCGS) model is a dynamic and stochastic representation of the supply of U.S. Navy combat groups (CGs) worldwide by its combat logistical forces. The Flexsim simulation model considers the supply and resupply of key consumables -- ship fuel, aviation fuel, dry goods, and ammunition – as CGs and supply ships (SSs) dynamically carry out operations worldwide. Consumption by CGs, which depends on distances traveled and type of activity, is considered both within theaters of operation and in transit between theater and homeport. Once a CG indicates a need for a consumable, an SS is dispatched to rendezvous with the CG and transfer the material at a model-calculated location. Force needs and demand for materials within theaters change based on stochastic actions, e.g. combat, show of force, humanitarian assistance. In order to meet these changing force needs, CGs may be pulled from other theaters or from home port. The model also considers the resupply of supply ships at friendly ports. All combat group and supply ship operational parameter values are populated in the model through a linked database. Execution of the model provides key system performance measures such as total distances traveled and service levels (e.g. time combat forces are below a critical supply level).