Fiber optic technology which has been developing over the past few years, offers significant advantages compared to wire data links: lower loss, greater bandwidths, tolerance of adverse environments, and installation flexibility. The increasing data transmission rates and distributed processing architectures of computer systems require high speed data networks. Much component technology and commercial local area network technology can be applied to improve the cost effectiveness of Navmat facility computer. The proposed project will analyze requirements for a high speed data network and define the optimum LAN configuration to meet those requirements. In addition, a phase implementation plan considering schedule/budget will be developed.