S-57 (IHO data exchange standard)

S-57 is a standardized format developed by the International Hydrographic Organization (IHO) for digital nautical charts used in marine navigation. It organizes detailed seafloor, coastline, navigational aids, and maritime features into a consistent data structure, enabling accurate and reliable electronic charts for ships. This standard ensures that different charting systems can exchange and interpret maritime information correctly, improving safety and efficiency at sea. While technical, S-57 ensures marine charts are precise, uniform, and compatible across various software and hardware platforms used globally by maritime authorities and navigation systems.