IHO S-57

IHO S-57 is a standardized digital format used for electronic nautical charts. Developed by the International Hydrographic Organization, it enables consistent, detailed, and accurate representation of maritime navigational information—such as coastlines, depths, navigational aids, and hazards—within electronic chart systems. By using S-57, maritime authorities and chart producers ensure that navigational data is compatible across different electronic charting platforms, enhancing safety and situational awareness for mariners worldwide. It serves as the foundation for modern Electronic Navigational Charts (ENCs), facilitating safe navigation and maritime operations.