为合理解决我国在东海、南海面临的复杂、尖锐的海洋权益纠纷，预判海上划界和北极航行中可能遇到的各类问题，全面维护我国海洋权益，争取海洋战略主动权，本项目结合前人研究成果，打破以往研究时将技术与法理割裂开的模式，深度融合二者并开展系统研究。针对传统墨卡托航海图用于划界时存在非赤道地区变形大的缺陷，研究建立适用于划界的斜轴高斯投影和非正轴墨卡托投影理论，以最大限度减少面积变形；针对北极航行航海图的适应性和通用性要求，研究并建立理论上更严密、形式上更简单、精度上更精确的北极航线和海图投影理论，实现北极地区海图投影和航线绘算数学分析特定领域的突破和创新；法理应用方面，研究海上划界方法在新型投影海图上的表示和绘算理论，分析北极航线对我国的重要战略意义及我国在北极的合法权益。项目研究成果可为我国相关决策机构提供参考，并为我国在海洋划界中维护和争取国家合法海洋权益进行技术储备，进一步推进海洋强国战略目标。

This project seeks to break through the previous research pattern that separates technology from legality and further combine them for a systematic research so as to reasonably resolve the complicated and sharp disputes of maritime rights and interests, forejudge various problems that may arise in the maritime delimitation and Arctic navigation, comprehensively safeguard China’s maritime rights and interests, and take initiative in maritime strategy. The traditional Mercator chart used for the maritime delimitation leads to large distortions in the non-equatorial areas. In order to minimize the area distortions, the theoretical systems of the oblique Gauss projection and non-normal Mercator projection are established. Due to the requirements of the adaptability and universality of the Arctic nautical chart, the Arctic route theory and the chart projection theory with more rigorous in theory, simpler in form and more precise in precision are studied, and then the breakthroughs and innovations in specific fields of the mathematical analyses of the chart projection and route plotting in the Arctic region can be realized. In terms of the application of legal principle, the representation and plotting of the maritime delimitation method on the new projection chart are proposed, and the important strategic significance of the Arctic route to China and China's legitimate rights and interests in the Arctic region are analyzed. The research results of this project can provide references for relevant decision-making bodies of China, and technical reserves for China to safeguard and strive for national legitimate maritime rights and interests in maritime delimitation activities, so as to further promote the strategic goal of maritime power.