Abstract: "Xuelong" is the most advanced scientific research vessel in China. With the continuous development and improvement of Xuelong online information platform, the demand for access to the latest "Xuelong" information via mobile terminals becomes more urgent. In order to build a information iOS platform which links "Xuelong" with the public and staff, we design and develop the Xuelong monitoring system based on iOS platform. The system is a C/S structure of the online App system, aims to achieve a real-time display "Xuelong" track, query the historical track, display relevant elements of data, receive and publish information, query the key node information and so on. It solves the screening of the key turning point among the massive route nodes, and the problem of straight line can’t across the 180 degree line of longitude while drawing route and other issues. Successfully applied to help relevant staff know the latest information of "Xuelong" and make right decisions without delay.

Key words: Xuelong, mobile terminal, iOS, ArcGIS