Abstract: In view of the problems of 2D display and loading of massive data, data redundancy and single type of data faced by automatic identification system(AIS) accessed by various platforms in providing maritime ship information services, this paper proposes an optimized key method for 3D visualization cartographic generalization of AIS ships.The method is elaborated from the aspects of AIS ship 3D visualisation processing, dynamic data analysis, scaled display loading technology and ship attribute visualisation, which greatly improves the loading and updating speed of AIS data as well as maritime ship identification, while using the method of cartographic generalization to scientifically handle the amount of screen loading of AIS data and other chart elements at different display scales, effectively improving the identification of ship types and the visualisation effect of reasonable aesthetics.

Key words: automatic identification system, 3D visualization, scaled display loading, cartographic generalization