Check Data

In the chart production workflow, data inspection is a critical process to ensure data quality and precision. As fundamental tools for maritime navigation and marine activities, the accuracy of chart data directly impacts navigation safety, coastal shipping information management, and marine resource management. The primary significance of verifying chart data includes:

  • Ensure data integrity and accuracy: Nautical charts contain extensive geographic information, feature objects, and spatial objects. Data accuracy and completeness form the foundation for preventing navigational errors and potential risks. Through data inspection and topology construction, defects such as geometric errors and attribute inconsistencies can be identified and rectified to ensure data reliability.
  • Compliance with international standards: Chart production must adhere to international standards like S-57 and S-58. Data verification ensures chart data can be correctly interpreted and utilized by international users and systems, meeting standardized requirements.
  • Enhance navigation and positioning reliability: By validating the relative positions and geometric accuracy between feature objects and spatial objects, more precise navigational information can be provided. For instance, ship collision avoidance systems rely on accurate boundaries and point markers (e.g., lighthouses, buoys) to deliver alerts and navigational recommendations, ensuring voyage safety.

SuperMap iDesktopX supports chart data verification based on the S-58 standard, offering 9 categories with 300+ inspection items and 6 customized spatial topology check categories. Through these verifications and topology validation, chart data complies with international standards and enables data format exchange/transmission, thereby minimizing navigation risks caused by data errors.

This chapter covers: