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As a concept that commercial parts are applied to weapon systems, Commercial Off-The-Shelf(COTS) was not well-received at a time when defense technology led commercial technology. However, the exponential growth of IT and the rapid expansion of commercial industry have made possible to make the cost low through mass production system within a short period, and the benefit of cost and schedule has been highlighted, triggering commercial parts to be applied to weapon systems. In order for commercial technology to be used in defense weapon systems, its performance in an extremely restricted condition of combat environment should be guaranteed. Generally, commercial parts have fundamental limitation in that the design and production requirements for commercial parts are different from those for the military. Therefore, it is required to confirm that commercial parts can be used for weapon systems through the approach of system engineering. This study presents the process tailored to characteristics of marine defense system and the method of analyzing its restricted condition in order to apply COTS to marine defense system. The study classifies the restricted conditions into general and special environments, suggests detailed process, and suggests useful tools to select appropriate items adapted to these restricted conditions in the commercial market. Lastly, as a case study for COTS applied to marine defense system, the study finds out the analysis results of application of COTS and restricted conditions of the warship electric system.

On the Method of Applying COTS through Restriction Analysis in Weapon Systems Development