S-57 (data format)

S-57 is a standardized digital format used to store and share nautical chart data, primarily for creating electronic navigation charts. It organizes geographic information—like water depths, coastlines, and navigational aids—in a structured, computer-readable way, ensuring consistency and accuracy across different systems and organizations. This format allows mariners and navigation software to reliably interpret essential maritime details, enhancing safety and efficiency at sea. While technically complex, S-57's main purpose is to facilitate the consistent, precise representation of navigational features for electronic charting and marine navigation.