The use of computer and simulation technologies, virtual navigation environment, simulated GPS navigation device, designed to address the real-installed GPS navigation instrument in teaching and training, where there is still some of the disadvantages. As the upgrade version of GPS navigator fast simulation techniques instead of soft-hard simulation, in order to simulate navigation instrument, it has good portability. The use of graphics technology to realistic simulation Navigator contour; using graphics simulation techniques and operational functions logic simulation technology, combined with real-time computational model, it simulate navigation instrument to have display and operation functions; Through the establishment of ship motion model, manual entry of the ship heading, speed and other parameters, the virtual ship maritime navigation environment, GPS navigation realizes instrument panel emulation, functional simulation and the Environment Virtual. Simulation Navigator has not only the real equipment and functions of the same appearance, but in a virtual navigation environment to achieve the integrated operation of navigation systems in order to effectively improve the effect of teaching and training navigators.